The solubilities of isophthalic acid (1) in binary acetic acid (2) + water (3) solvent mixtures were determined in a pressurized vessel. The temperature range was from 373.2 to 473.2K and the range of the mole ...The solubilities of isophthalic acid (1) in binary acetic acid (2) + water (3) solvent mixtures were determined in a pressurized vessel. The temperature range was from 373.2 to 473.2K and the range of the mole fraction of acetic acid in the solvent mixtures was from x2 = 0 to 1. A new method to measure the solubility was developed, which solved the problem of sampling at high temperature. The experimental results indicated that within the temperature range studied, the solubilities of isophthalic acid in all mixtures showed an increasing trend with increasing tem- perature. The expe^mental solubilities were co .rrelated by the Buchowski equation, and the calculate results showed good agreement with the experimental solubilities. Furthermore, the mixed solvent systems were found to exhibit a maximum solubility effect on the solubility, which may be attributed to the intermolecular association between the solute and the solvent mixture: The maximum solubility effect was well modeled by the modified Wilson equation.展开更多
5-(Hydroxymethyl) isophthalic acid (H2HIA) as a novel organic ligand was prepared from 3,5-bis(methoxycarbonyl)benzoic acid by a two-step method. And then, a 3D helical coor- dination polymer with a 3-fold inter...5-(Hydroxymethyl) isophthalic acid (H2HIA) as a novel organic ligand was prepared from 3,5-bis(methoxycarbonyl)benzoic acid by a two-step method. And then, a 3D helical coor- dination polymer with a 3-fold interpenetration structure, namely [Zn1/2(HIA)1/2(DPEE)1/2]n (1), was hydrothermally synthesized at 160 ℃, using H2HIA ligands to assemble with DPEE ligands and Zn2+ ions. Complex 1 crystalizes in orthorhombic system, space group Pnna, with a = 8.2118(5), b = 17.1698(7), c =14.9922(7) ?, V = 2113.82(18) ?3, μ = 1.194 mm-1, Z = 4 and S = 0.967. Moreover, some physical characteristics of complex 1, such as powder X-ray diffraction (PXRD), thermogravimetry analyses (TGA) and photoluminescent properties, were also investigated.展开更多
In search of environmentally benign insecticides with high activity, low toxicity and low resistance, a series of novel anthranilic(isophthalic) acid esters was designed and synthesized based on the structure of rya...In search of environmentally benign insecticides with high activity, low toxicity and low resistance, a series of novel anthranilic(isophthalic) acid esters was designed and synthesized based on the structure of ryanodine modulating agent. All the compounds were characterized by 1H NMR spectra, elemental analysis or high resolution mass spectrometry(HRMS). The preliminary results of biological activity assessment indicate that some of the title compounds exhibit certain but unremarkable insecticidal activity against Mythimna separata Walker at 200 mg/L and fungicidal activities against five funguses at 50 mg/L.展开更多
A chiral supramolecular coordination polymer, [Co(HL)·(DMF)]n(1), with helical chains from a flexible ligand 5-(imidazol-1-ylmethyl)isophthalic acid(H2L) has been obtained under hydrothermal conditions ...A chiral supramolecular coordination polymer, [Co(HL)·(DMF)]n(1), with helical chains from a flexible ligand 5-(imidazol-1-ylmethyl)isophthalic acid(H2L) has been obtained under hydrothermal conditions and characterized by elemental analysis, powder X-ray diffraction(PXRD), IR, Uv/vis spectra, thermal gravimetric analyses(TGA) and also by single-crystal X-ray diffraction. It crystallizes in hexagonal, space group P6522 with a = 8.8109(3), b = 8.8109(3), c = 71.771(3) , γ = 120°, V = 4825.3(3) -3, Z = 6, Mr = 695.55, Dc = 1.436 g/cm-3, Rint = 0.0684, F(000) = 2166, the final R = 0.0923 and w R = 0.2697 for 3056 observed reflections(I 2σ(I)). The title coordination polymer 1 shows a chiral layered structure based on right-handed helix chains. Such layers are associated together through hydrogen-bonding interactions to form a 3D supramolecular framework.展开更多
Two new metal-organic frameworks, [Co3L2(NO2)2(H2O)2],, (1) and{[Ni(L)(H2O)5] (H2O)2.DMF}, (2, H2L = 5-(4-pyridyl)-methoxyl isophthalic acid), have been synthesized by the hydrothermal method and chara...Two new metal-organic frameworks, [Co3L2(NO2)2(H2O)2],, (1) and{[Ni(L)(H2O)5] (H2O)2.DMF}, (2, H2L = 5-(4-pyridyl)-methoxyl isophthalic acid), have been synthesized by the hydrothermal method and characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis (TGA) and X-ray crystallography. Compound 1 crystallizes in the monoclinic system with space group P2/c and adopts a slightly distorted octahedral configuration. In compound 1, the 2D bilayered structures are linked by O-H...O and O-H...N hydrogen bonds to form a 3D framework. Compound 2 crystallizes in the monoclinic system with space group P2/n, and the central nickel atoms are octa-coordinated with five O atoms from coordinated water molecules and one N atom from one H2L ligand. The abundant O-H…O hydrogen bonds and π…π interactions link the molecules into a 3D framework. In addition, compounds 1 and 2 exhibit strong ultraviolet absorption in the solid state at room temperature.展开更多
A Zn(Ⅱ) supramolecular coordination polymer, {[Zn2(L)2(m-bix)(H20)]6H2O}n(1), with an interesting 1D→2D polythreading array from a flexible and angular organic aromaticpolycarboxylate ligand 5-(4-hydroxyp...A Zn(Ⅱ) supramolecular coordination polymer, {[Zn2(L)2(m-bix)(H20)]6H2O}n(1), with an interesting 1D→2D polythreading array from a flexible and angular organic aromaticpolycarboxylate ligand 5-(4-hydroxypyridinium-l-ylmethyl)isophthalic acid (H2L), and N-donorligand 1,3-bis(imidazol-l-ylmethyl)benzene (m-bix), has been obtained under hydrothermalconditions and characterized by elemental analysis, powder X-ray diffraction (PXRD), IR, thermalgravimetric analyses (TGA) and single-crystal X-ray diffraction. In 1, the Zn(Ⅱ) center has twocoordination geometries. One exhibits a trigonal bipyramidal coordination sphere, and the other isa tetrahedral geometry; L2- has two different coordination modes, with one connecting three Zn(Ⅱ)ions through two monodentate carboxylate groups and the monodentate hydroxyl group, and theother bridging two Zn(Ⅱ) ions through two carboxylate groups. The L2- anions connect the Zn(Ⅱ)centers forming an infinite 1D tubular structure. These 1D tubes are interconnected by the m-bixspacers to form a 2D framework. Such 2D layers are further assembled into a 3D supramolecularnetwork via hydrogen bonds. Meanwhile, the luminescent property of 1 has also been investigatedin detail.展开更多
Two new Ni( Ⅱ) coordination polymers, {[Ni(tbip)(bipy)(H2O)]-0.5H2O}n 1 and [Ni(tbip)(phen)(H2O)]n 2 (Hatbip = 5-tert-butyl isophthalic acid, bipy = 2,2'-bipyridine, phen = 1,10-phenanthroline), have...Two new Ni( Ⅱ) coordination polymers, {[Ni(tbip)(bipy)(H2O)]-0.5H2O}n 1 and [Ni(tbip)(phen)(H2O)]n 2 (Hatbip = 5-tert-butyl isophthalic acid, bipy = 2,2'-bipyridine, phen = 1,10-phenanthroline), have been synthesized under hydrothermal conditions and characterized by elemental analysis, X-ray diffraction, and IR spectroscopy. In the two polymers, H2tbip acts as a tridentate ligand. Compound 1 has a tbip bridged 1-D linear chain which is extended by hydrogen bonds into a 1-D double chain, while compound 2 exhibits a 1-D zigzag chain.展开更多
Hydrothermal reactions of 5-(tetrazol-5-yl) isophthalic acid with cadmium nitrate/praseodymium nitrate led to two complexes of [Cd3(TZI)2(H2O)(11)]n(1) and [Pr(TZI)(H2O)5]n(2). Their structures and pro...Hydrothermal reactions of 5-(tetrazol-5-yl) isophthalic acid with cadmium nitrate/praseodymium nitrate led to two complexes of [Cd3(TZI)2(H2O)(11)]n(1) and [Pr(TZI)(H2O)5]n(2). Their structures and properties were determined by X-ray diffraction, IR spectroscopy, fluorescence spectrum, thermal gravimetric analyses and elemental analysis. Complex 1 belongs to monoclinic system, I2/c space group, with a = 12.8688(3), b = 18.0925(3), c = 14.5190(3)A, β = 116.054(3)°, V =3036.92(13) A^3, Z = 4; complex 2 crystallizes in triclinic, space group P 1, with a = 7.9690(5), b =9.7665(8), c = 10.4353(9) A, α = 116.709(9), β = 107.461(6), γ = 95.671(6)°, V = 665.54(9)A^3 and Z =2. Complex 1 is a 3D planar structure. Complex 2 is a one-dimensional double chain configuration and extends into a 3D network by hydrogen bonds and π-π interactions.展开更多
A novel polymeric zinc(II) complex {[Zn2(TIA)(H2O)3]·(NO3)}n(1, H3TIA = 5-(1H-tetrazol-5-yl)isophthalic acid) has been synthesized in mixed solvents under solvothermal conditions and characterized by ...A novel polymeric zinc(II) complex {[Zn2(TIA)(H2O)3]·(NO3)}n(1, H3TIA = 5-(1H-tetrazol-5-yl)isophthalic acid) has been synthesized in mixed solvents under solvothermal conditions and characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction. Complex 1 crystallizes in orthorhombic, space group Cmcm with a = 10.4210(6), b =23.3526(14), c = 6.9214(4)A, V = 1684.37(17)A^3, Z = 4, C9H4N5O(10)Zn2, Mr = 472.91, Dc = 1.865g/cm^3, F(000) = 932, λ(MoK α) = 2.909 mm^-1, R = 0.0423 and wR = 0.1287. The complex has good thermal stability and excellent photoluminescent property.展开更多
The new complex of melamine (MA) with isophthalic acid (H2IA), [(HMA^+)- (HIA^-)]·2H2O, has been prepared and its structure was characterized by X-ray crystallography. The crystal is of triclinic, space ...The new complex of melamine (MA) with isophthalic acid (H2IA), [(HMA^+)- (HIA^-)]·2H2O, has been prepared and its structure was characterized by X-ray crystallography. The crystal is of triclinic, space group P^-1 with a = 7.0228(6), b = 9.1706(8), c = 12.170(1) A, α = 95.337(2), β = 105.247(2), γ = 97.813(2)^o, V = 742.3(1) A ^3, Mr= 328.30, Z = 2, Dc = 1.469 g/cm^3, ;λ = 0.71073 A,μ(MoKa) = 0.121 mm^-1 and F(000) = 344. The structure was refined to R = 0.0389 and wR = 0.1093 for 2513 observed reflections with I 〉 2σ(I). Melamine dimer and isophthalic acid anion are interlinked by N-H…N and N-H…O hydrogen bonds, resulting in a 1D rosette ribbon in which water molecules and amino groups are self-assembled into quasihexagonal patterns.展开更多
The self-assembly of Co(OAc)·4H2O with H2tbip and bipy (H2tbip = 5-tert-butyl isophthalic acid, bipy = 4,4'-bipyridine) generates one new complex, [Co3(tbip)2(Htbip)2(bipy)]n, which has been characteri...The self-assembly of Co(OAc)·4H2O with H2tbip and bipy (H2tbip = 5-tert-butyl isophthalic acid, bipy = 4,4'-bipyridine) generates one new complex, [Co3(tbip)2(Htbip)2(bipy)]n, which has been characterized by elemental analysis, X-ray diffraction, and IR spectroscopy. Single-crystal X-ray analysis reveals that it crystallizes in the triclinic space group P1 with a = 9.471(6), b = 12.597(8), c = 12.899(8), α = 84.660(7), β = 70.548(7), γ = 81.965(7)o, V = 1435.1(15)3, Mr = 1215.85, Dc = 1.407 g/cm3, Z = 1, F(000) = 629, μ(MoKα) = 0.926 mm-1, the final R = 0.0623 and wR = 0.1724. The complex consists of a tbip bridged trinuclear cobalt() unit and is further linked by 4,4'-bipyridine molecule to form a 2D supramolecular network.展开更多
Three novel complexes, namely {[La(tapipa)(4,4′-bibp)·(H2O)2]·H2O}n(1),{[La-(tapipa)(H2O)4(OH)]·3 H2O}n(2),[Co(tapipa)(1,4-bbib)]n(3)(tapipa = 5-(3-(tetrazo-5-yl)phenyl)isophthalic acid, 4,4′-bibp = ...Three novel complexes, namely {[La(tapipa)(4,4′-bibp)·(H2O)2]·H2O}n(1),{[La-(tapipa)(H2O)4(OH)]·3 H2O}n(2),[Co(tapipa)(1,4-bbib)]n(3)(tapipa = 5-(3-(tetrazo-5-yl)phenyl)isophthalic acid, 4,4′-bibp = 4,4′-bis(imidazolyl)biphenyl, and 1,4-bbib = 1,4-bis(benzimidazo-1-ly)benzene) have been synthesized under solvothermal conditions and characterized by PXRD, IR,TGA, and so on. Complex 1 presents a 2 D layer structure, which is finally packed into a 3 D supramolecular structure by means of hydrogen bonds;complexes 2 and 3 exhibit 1 D chains and 2 D wavy-type structures, respectively, which are expanded into 3 D supramolecular structures through hydrogen bonds and π-π interactions. Furthermore, the luminescence properties of complex 1 and the variable-temperature magnetic susceptibilities of 3 were investigated. Complex 1 has highly selective sensing for Fe^3+ and Cr2O7^2- ions.展开更多
Two new Co( Ⅱ) coordination polymers {[Co(Htbip)2(H2O)4]·(H2O)}n 1 and {[Co2(tbip)2Copa)1.5](H2tbip)}n 2 (H2tbip = 5-tert-butyl isophtha]ic acid, bpa = 1,2-dis(4-pyri- dyl)ethane) have been synt...Two new Co( Ⅱ) coordination polymers {[Co(Htbip)2(H2O)4]·(H2O)}n 1 and {[Co2(tbip)2Copa)1.5](H2tbip)}n 2 (H2tbip = 5-tert-butyl isophtha]ic acid, bpa = 1,2-dis(4-pyri- dyl)ethane) have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectroscopy and X-ray diffraction. Compound 1 exhibits a water-bridged 1-D linear chain which is extended by hydrogen bonds into a 3D supramolecular network, while compound 2 has a dinuclear unit extended by bpa ligand to form a 2-D layer.展开更多
A novel 3D metal-organic coordination polymer with helical chains based on a flexible 5-(imidazol-1-ylmethyl)isophthalic acid(H_2L) as a main ligand and 1,2-bis(4-pyridyl)ethane(bpa) as a N-containing ancillar...A novel 3D metal-organic coordination polymer with helical chains based on a flexible 5-(imidazol-1-ylmethyl)isophthalic acid(H_2L) as a main ligand and 1,2-bis(4-pyridyl)ethane(bpa) as a N-containing ancillary ligand,[Cd L(bpa)_(0.5)]_n(1),has been obtained under hydrothermal conditions and characterized by elemental analysis,powder X-ray diffraction(PXRD),IR,thermal gravimetric analyses(TGA) and single-crystal X-ray diffraction.It crystallizes in monoclinic,space group P2_1/c with a = 10.984(2),b = 10.1829(12),c = 17.782(3) A,β = 123.156(11)o,V = 1665.1(5) A^3,Z = 4,Mr = 448.72,Dc = 1.790 g/cm^3,Rint = 0.0871,F(000) = 892,the final R = 0.0687 and w R = 0.1294 for 2920 observed reflections(I 〉 2σ(I)).In complex 1,the L^2- anions connect Cd(Ⅱ) ions to form two-dimensional metal-organic layers(Cd_2L_2)n,in which the 1D helical chains(Cd-L)_n are alternately arranged in a right-and left-handed sequence.These layers are further linked to build a 3D network by the bpa ligand.In addtion,photoluminescent properties for 1 are also investigated.展开更多
The reverse ATRP of MMA using AIBN/FeCl3/ isophthalic acid as the initiating system was successfully performed. The new initiating system can be used to synthesize PMMA with high molecular weight and narrow polydis-pe...The reverse ATRP of MMA using AIBN/FeCl3/ isophthalic acid as the initiating system was successfully performed. The new initiating system can be used to synthesize PMMA with high molecular weight and narrow polydis-persity index. The polymerization shows ’living’/controlled characteristics. Compared with other initiating system used in reverse ATRP, the easy availability and non-toxicity of isophthalic acid make it very attractive.展开更多
A novel heterometallic-organic framework(HMOF), namely [ZnBa(1,3-BDC)2(DMA)2],(I)(DMA=N,N- dimethylacetamide), was synthesized by means of solvothermal method from isophthalic acid(1,3-BDC) ligand and rele...A novel heterometallic-organic framework(HMOF), namely [ZnBa(1,3-BDC)2(DMA)2],(I)(DMA=N,N- dimethylacetamide), was synthesized by means of solvothermal method from isophthalic acid(1,3-BDC) ligand and relevant metal salts as raw materials. The single-crystal X-ray diffraction analysis result demonstrates that compound 1 is a three-dimensional(3D) framework including heterometallic tetranuclear [Zn2Ba2(COO)s] clusters as building subunits, which could be simplified into an eight-connected body-centered cubic(bcu) topological net. At room tem- perature, compound l displays strong blue luminescence in solid state. Furthermore, the quantum yield and lumines- cent lifetime of compound 1 were also measured.展开更多
In this study,Au nanoparticles/poly 5-[(2-hydroxynaphthalen-l-yl)diazenyl]isophthalic acid film modified glassy carbon electrode(AuNPs/poly(NDI)/GCE) has shown excellent electrocatalytic activity toward the oxid...In this study,Au nanoparticles/poly 5-[(2-hydroxynaphthalen-l-yl)diazenyl]isophthalic acid film modified glassy carbon electrode(AuNPs/poly(NDI)/GCE) has shown excellent electrocatalytic activity toward the oxidation of adrenaline(ADR),paracetamol(PAC),and tryptophan(Trp).The bare glassy carbon electrode(GCE) fails to separate the oxidation peak potentials of these molecules,while the poly(NDI) film modified electrode can resolve them.Electrochemical impedance spectroscopy(EIS)indicates that the charge transfer resistance of the bare electrode decreases as 5-[(2-hydroxynaphthalen-l-yl)diazenyl]isophthalic acid is electropolymerized on the bare electrode.Furthermore,EIS exhibits enhancement of electron transfer kinetics between analytes and the electrode after electrodeposition of Au nanoparticles.Differential pulse voltammetry results show that the electrocatalytic current increases linearly in the ranges of 0.01-680.0 μmol L^-1 for ADR,0.05-498.0 μmol L^-1 for PAC,and 3.0-632.0 μmol L^-1 for Trp;with detection limits(S/N = 3) of 0.009 μmol L^-1,0.005 μmol L^-1,and 0.09 μmol L^-1 for ADR,PAC,and Trp,respectively.The proposed method has been successfully applied for simultaneous determination of ADR,PAC,and Trp in biological samples.展开更多
The title compound, [Pd(2,2′-bipy)2](Haadip)2·4H2O, was synthesized via the hydrothermal reaction of PdCl2 with 5-aminodiacetic isophthalic acid (H4adip) in an acetic acid water solution. It was characteri...The title compound, [Pd(2,2′-bipy)2](Haadip)2·4H2O, was synthesized via the hydrothermal reaction of PdCl2 with 5-aminodiacetic isophthalic acid (H4adip) in an acetic acid water solution. It was characterized by elemental analysis and infrared spectrum. Crystal data for C44H44N6O20Pd: monoclinic, space group P21/n, a = 11.0674(2), b = 9.9716(2), c= 20.5770(3)A, β = 92.7300(3)°, V = 2268.29(7)A^3, Z = 2, Mr = 1083.25, Dc = 1.586 g/cm^3, F(000) = 1112,μ = 0.499 mm^-1, 2(MoKa) = 0.71073 A, T = 293(2) K, 2θmax = 51.38°, GOOF = 1.067, R = 0.0268 and wR = 0.0710 for 3770 reflections with 1 〉 2σ(I). X-ray diffraction studies reveal that the title compound has an interesting 3D microporous architecture via hydrogen bonds with the cations located inside the channel.展开更多
A three-dimensional(3 D) Cd-based metal-organic framework(MOF), [Cd(H2 O)(PAA)]·(H2 O)2(complex 1) has been rationally designed and synthesized by using 4-(pyrimidin-5-yl)isophthalic acid(H2 PAA) and Cd(NO3)2...A three-dimensional(3 D) Cd-based metal-organic framework(MOF), [Cd(H2 O)(PAA)]·(H2 O)2(complex 1) has been rationally designed and synthesized by using 4-(pyrimidin-5-yl)isophthalic acid(H2 PAA) and Cd(NO3)2·4 H2 O under solvothermal conditions. The structure has been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, powder X-ray diffraction(PXRD) and thermogravimetric analyses(TGA). Single-crystal X-ray diffraction analyses reveal that complex 1 consists of a 3 D network with one-dimensional(1 D) channels. Moreover, 1 exhibits strong luminescent emission in solid state at room temperature. Fluorescence quenching was observed when treating complex 1 with picric acid(PA), 2,4-dinitrophenylhydrazine(2,4-DNPH) and p-nitroaniline(p-NA), revealing that the as-synthesized complex could be used as a luminescence sensor for the detection of PA, 2,4-DNPH and p-NA.展开更多
A binuclear complex [Cu2(phen)2(ip)(Hip)2].4H2O has been synthesized by the reaction of Cu(CH3COO)2.H2O, phen(1,10-phenanthroline) and isophthalic acid (H2ip) under hydrothermal condition. Elemental analys...A binuclear complex [Cu2(phen)2(ip)(Hip)2].4H2O has been synthesized by the reaction of Cu(CH3COO)2.H2O, phen(1,10-phenanthroline) and isophthalic acid (H2ip) under hydrothermal condition. Elemental analysis, IR spectra and X-ray single-crystal diffraction were carded out to determine the composition and crystal structure. Crystal data for this complex: monoclinic, space group C2/c, a = 19.214(3), b = 10.6973(14), c = 22.567(3) A, β = 105.081(2)°, C24H19N2O8Cu, Mr= 526.95, Z = 8, F(000) = 2160, V= 4478.6(10) A3, Dc = 1.563 g/cm^3,μ = 1.030 mm^-1, -24≤h≤ 16, -13≤k≤13, -28≤l≤28, R = 0.0369 and wR = 0.0819 for 4615 (Rint = 1.0357) independent reflections and 3290 observed ones (I 〉 2σ(I)). Structural analysis shows that coordination geometry of Cu( Ⅱ ) is a planar square, and the title complex exhibits a 2-D framework supramolecular structure by hydrogen bonds and π-π stacking interactions.展开更多
基金Supported by the Natural Science Foundation of Zhejiang Province, China (Z4100351) and the Fundamental Research Funds for the Central Universities (2013QNA4035).
文摘The solubilities of isophthalic acid (1) in binary acetic acid (2) + water (3) solvent mixtures were determined in a pressurized vessel. The temperature range was from 373.2 to 473.2K and the range of the mole fraction of acetic acid in the solvent mixtures was from x2 = 0 to 1. A new method to measure the solubility was developed, which solved the problem of sampling at high temperature. The experimental results indicated that within the temperature range studied, the solubilities of isophthalic acid in all mixtures showed an increasing trend with increasing tem- perature. The expe^mental solubilities were co .rrelated by the Buchowski equation, and the calculate results showed good agreement with the experimental solubilities. Furthermore, the mixed solvent systems were found to exhibit a maximum solubility effect on the solubility, which may be attributed to the intermolecular association between the solute and the solvent mixture: The maximum solubility effect was well modeled by the modified Wilson equation.
基金supported by the Natural Science Foundation of Guizhou Province(20122344)125 program of Guizhou Education Department(2012015)the Doctoral Scientific Fund of Zunyi Normal College(2012BSJJ12)
文摘5-(Hydroxymethyl) isophthalic acid (H2HIA) as a novel organic ligand was prepared from 3,5-bis(methoxycarbonyl)benzoic acid by a two-step method. And then, a 3D helical coor- dination polymer with a 3-fold interpenetration structure, namely [Zn1/2(HIA)1/2(DPEE)1/2]n (1), was hydrothermally synthesized at 160 ℃, using H2HIA ligands to assemble with DPEE ligands and Zn2+ ions. Complex 1 crystalizes in orthorhombic system, space group Pnna, with a = 8.2118(5), b = 17.1698(7), c =14.9922(7) ?, V = 2113.82(18) ?3, μ = 1.194 mm-1, Z = 4 and S = 0.967. Moreover, some physical characteristics of complex 1, such as powder X-ray diffraction (PXRD), thermogravimetry analyses (TGA) and photoluminescent properties, were also investigated.
基金Supported by the National Natural Science Foundation of China(No.20872069 )the National Basic Research Program of China(No.2010CB126106)
文摘In search of environmentally benign insecticides with high activity, low toxicity and low resistance, a series of novel anthranilic(isophthalic) acid esters was designed and synthesized based on the structure of ryanodine modulating agent. All the compounds were characterized by 1H NMR spectra, elemental analysis or high resolution mass spectrometry(HRMS). The preliminary results of biological activity assessment indicate that some of the title compounds exhibit certain but unremarkable insecticidal activity against Mythimna separata Walker at 200 mg/L and fungicidal activities against five funguses at 50 mg/L.
基金supported by Education Chamber of Henan Province(No.15A150068)
文摘A chiral supramolecular coordination polymer, [Co(HL)·(DMF)]n(1), with helical chains from a flexible ligand 5-(imidazol-1-ylmethyl)isophthalic acid(H2L) has been obtained under hydrothermal conditions and characterized by elemental analysis, powder X-ray diffraction(PXRD), IR, Uv/vis spectra, thermal gravimetric analyses(TGA) and also by single-crystal X-ray diffraction. It crystallizes in hexagonal, space group P6522 with a = 8.8109(3), b = 8.8109(3), c = 71.771(3) , γ = 120°, V = 4825.3(3) -3, Z = 6, Mr = 695.55, Dc = 1.436 g/cm-3, Rint = 0.0684, F(000) = 2166, the final R = 0.0923 and w R = 0.2697 for 3056 observed reflections(I 2σ(I)). The title coordination polymer 1 shows a chiral layered structure based on right-handed helix chains. Such layers are associated together through hydrogen-bonding interactions to form a 3D supramolecular framework.
基金supported by the National Natural Science Foundation of China (No.20971065)the National Basic Research Program of China (No.2010CB923303)
文摘Two new metal-organic frameworks, [Co3L2(NO2)2(H2O)2],, (1) and{[Ni(L)(H2O)5] (H2O)2.DMF}, (2, H2L = 5-(4-pyridyl)-methoxyl isophthalic acid), have been synthesized by the hydrothermal method and characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis (TGA) and X-ray crystallography. Compound 1 crystallizes in the monoclinic system with space group P2/c and adopts a slightly distorted octahedral configuration. In compound 1, the 2D bilayered structures are linked by O-H...O and O-H...N hydrogen bonds to form a 3D framework. Compound 2 crystallizes in the monoclinic system with space group P2/n, and the central nickel atoms are octa-coordinated with five O atoms from coordinated water molecules and one N atom from one H2L ligand. The abundant O-H…O hydrogen bonds and π…π interactions link the molecules into a 3D framework. In addition, compounds 1 and 2 exhibit strong ultraviolet absorption in the solid state at room temperature.
基金supported by Education Chamber of Henan Province(No.15A150068)
文摘A Zn(Ⅱ) supramolecular coordination polymer, {[Zn2(L)2(m-bix)(H20)]6H2O}n(1), with an interesting 1D→2D polythreading array from a flexible and angular organic aromaticpolycarboxylate ligand 5-(4-hydroxypyridinium-l-ylmethyl)isophthalic acid (H2L), and N-donorligand 1,3-bis(imidazol-l-ylmethyl)benzene (m-bix), has been obtained under hydrothermalconditions and characterized by elemental analysis, powder X-ray diffraction (PXRD), IR, thermalgravimetric analyses (TGA) and single-crystal X-ray diffraction. In 1, the Zn(Ⅱ) center has twocoordination geometries. One exhibits a trigonal bipyramidal coordination sphere, and the other isa tetrahedral geometry; L2- has two different coordination modes, with one connecting three Zn(Ⅱ)ions through two monodentate carboxylate groups and the monodentate hydroxyl group, and theother bridging two Zn(Ⅱ) ions through two carboxylate groups. The L2- anions connect the Zn(Ⅱ)centers forming an infinite 1D tubular structure. These 1D tubes are interconnected by the m-bixspacers to form a 2D framework. Such 2D layers are further assembled into a 3D supramolecularnetwork via hydrogen bonds. Meanwhile, the luminescent property of 1 has also been investigatedin detail.
基金supported by the National Natural Science Foundation of China (Nos.20771026 and 20771054)the Henan Tackle Key Problem of Science and Technology (Nos.072102270030 and 072102270034)the Foundation of Education Committee of Henan Province (2006150017 and 2008A150018)
文摘Two new Ni( Ⅱ) coordination polymers, {[Ni(tbip)(bipy)(H2O)]-0.5H2O}n 1 and [Ni(tbip)(phen)(H2O)]n 2 (Hatbip = 5-tert-butyl isophthalic acid, bipy = 2,2'-bipyridine, phen = 1,10-phenanthroline), have been synthesized under hydrothermal conditions and characterized by elemental analysis, X-ray diffraction, and IR spectroscopy. In the two polymers, H2tbip acts as a tridentate ligand. Compound 1 has a tbip bridged 1-D linear chain which is extended by hydrogen bonds into a 1-D double chain, while compound 2 exhibits a 1-D zigzag chain.
基金Supported by the International Science&Technology Cooperation Program of China(No.2011DFA51980)the International Scientific and Technological Cooperation Projects of Shanxi Province(No.2015081043)+1 种基金“131”Leading Talents Project in Colleges and Universities,Science and Technology Innovation Project of Shanxi Province(No.2014101002)Graduate Student Education Innovation Project of Shanxi Province(No.20141101)
文摘Hydrothermal reactions of 5-(tetrazol-5-yl) isophthalic acid with cadmium nitrate/praseodymium nitrate led to two complexes of [Cd3(TZI)2(H2O)(11)]n(1) and [Pr(TZI)(H2O)5]n(2). Their structures and properties were determined by X-ray diffraction, IR spectroscopy, fluorescence spectrum, thermal gravimetric analyses and elemental analysis. Complex 1 belongs to monoclinic system, I2/c space group, with a = 12.8688(3), b = 18.0925(3), c = 14.5190(3)A, β = 116.054(3)°, V =3036.92(13) A^3, Z = 4; complex 2 crystallizes in triclinic, space group P 1, with a = 7.9690(5), b =9.7665(8), c = 10.4353(9) A, α = 116.709(9), β = 107.461(6), γ = 95.671(6)°, V = 665.54(9)A^3 and Z =2. Complex 1 is a 3D planar structure. Complex 2 is a one-dimensional double chain configuration and extends into a 3D network by hydrogen bonds and π-π interactions.
基金Supported by the National Natural Science Foundation of China(No.21576112)the Program for New Century Excellent Talents in University(NCET-10-0176)of ChinaNatural Science Foundation Project of Jilin Province(No.20130521019JH and 201215219)
文摘A novel polymeric zinc(II) complex {[Zn2(TIA)(H2O)3]·(NO3)}n(1, H3TIA = 5-(1H-tetrazol-5-yl)isophthalic acid) has been synthesized in mixed solvents under solvothermal conditions and characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction. Complex 1 crystallizes in orthorhombic, space group Cmcm with a = 10.4210(6), b =23.3526(14), c = 6.9214(4)A, V = 1684.37(17)A^3, Z = 4, C9H4N5O(10)Zn2, Mr = 472.91, Dc = 1.865g/cm^3, F(000) = 932, λ(MoK α) = 2.909 mm^-1, R = 0.0423 and wR = 0.1287. The complex has good thermal stability and excellent photoluminescent property.
基金This work was supported by the Guangdong Provincial Science and Technology Bureau (No. 5003750) Ph. D Foundation of Guangdong Institute of Education
文摘The new complex of melamine (MA) with isophthalic acid (H2IA), [(HMA^+)- (HIA^-)]·2H2O, has been prepared and its structure was characterized by X-ray crystallography. The crystal is of triclinic, space group P^-1 with a = 7.0228(6), b = 9.1706(8), c = 12.170(1) A, α = 95.337(2), β = 105.247(2), γ = 97.813(2)^o, V = 742.3(1) A ^3, Mr= 328.30, Z = 2, Dc = 1.469 g/cm^3, ;λ = 0.71073 A,μ(MoKa) = 0.121 mm^-1 and F(000) = 344. The structure was refined to R = 0.0389 and wR = 0.1093 for 2513 observed reflections with I 〉 2σ(I). Melamine dimer and isophthalic acid anion are interlinked by N-H…N and N-H…O hydrogen bonds, resulting in a 1D rosette ribbon in which water molecules and amino groups are self-assembled into quasihexagonal patterns.
基金supported by the National Natural Science Foundation of China (Nos. 20471026 and 20771054)the Henan Tackle Key Problem of Science and Technology (Nos. 072102270030 and 072102270034)the Foundation of Education Committee of Henan Province (2006150017 and 2008A150018)
文摘The self-assembly of Co(OAc)·4H2O with H2tbip and bipy (H2tbip = 5-tert-butyl isophthalic acid, bipy = 4,4'-bipyridine) generates one new complex, [Co3(tbip)2(Htbip)2(bipy)]n, which has been characterized by elemental analysis, X-ray diffraction, and IR spectroscopy. Single-crystal X-ray analysis reveals that it crystallizes in the triclinic space group P1 with a = 9.471(6), b = 12.597(8), c = 12.899(8), α = 84.660(7), β = 70.548(7), γ = 81.965(7)o, V = 1435.1(15)3, Mr = 1215.85, Dc = 1.407 g/cm3, Z = 1, F(000) = 629, μ(MoKα) = 0.926 mm-1, the final R = 0.0623 and wR = 0.1724. The complex consists of a tbip bridged trinuclear cobalt() unit and is further linked by 4,4'-bipyridine molecule to form a 2D supramolecular network.
基金supported by the international Scientific and Technological Cooperation Projects of Shanxi Province(201803D421080)
文摘Three novel complexes, namely {[La(tapipa)(4,4′-bibp)·(H2O)2]·H2O}n(1),{[La-(tapipa)(H2O)4(OH)]·3 H2O}n(2),[Co(tapipa)(1,4-bbib)]n(3)(tapipa = 5-(3-(tetrazo-5-yl)phenyl)isophthalic acid, 4,4′-bibp = 4,4′-bis(imidazolyl)biphenyl, and 1,4-bbib = 1,4-bis(benzimidazo-1-ly)benzene) have been synthesized under solvothermal conditions and characterized by PXRD, IR,TGA, and so on. Complex 1 presents a 2 D layer structure, which is finally packed into a 3 D supramolecular structure by means of hydrogen bonds;complexes 2 and 3 exhibit 1 D chains and 2 D wavy-type structures, respectively, which are expanded into 3 D supramolecular structures through hydrogen bonds and π-π interactions. Furthermore, the luminescence properties of complex 1 and the variable-temperature magnetic susceptibilities of 3 were investigated. Complex 1 has highly selective sensing for Fe^3+ and Cr2O7^2- ions.
基金supported by the Young Science Foundation of Luoyang Normal University(2009-QNJJ-017)
文摘Two new Co( Ⅱ) coordination polymers {[Co(Htbip)2(H2O)4]·(H2O)}n 1 and {[Co2(tbip)2Copa)1.5](H2tbip)}n 2 (H2tbip = 5-tert-butyl isophtha]ic acid, bpa = 1,2-dis(4-pyri- dyl)ethane) have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectroscopy and X-ray diffraction. Compound 1 exhibits a water-bridged 1-D linear chain which is extended by hydrogen bonds into a 3D supramolecular network, while compound 2 has a dinuclear unit extended by bpa ligand to form a 2-D layer.
基金supported by Education Chamber of Henan Province(No.15A150068)
文摘A novel 3D metal-organic coordination polymer with helical chains based on a flexible 5-(imidazol-1-ylmethyl)isophthalic acid(H_2L) as a main ligand and 1,2-bis(4-pyridyl)ethane(bpa) as a N-containing ancillary ligand,[Cd L(bpa)_(0.5)]_n(1),has been obtained under hydrothermal conditions and characterized by elemental analysis,powder X-ray diffraction(PXRD),IR,thermal gravimetric analyses(TGA) and single-crystal X-ray diffraction.It crystallizes in monoclinic,space group P2_1/c with a = 10.984(2),b = 10.1829(12),c = 17.782(3) A,β = 123.156(11)o,V = 1665.1(5) A^3,Z = 4,Mr = 448.72,Dc = 1.790 g/cm^3,Rint = 0.0871,F(000) = 892,the final R = 0.0687 and w R = 0.1294 for 2920 observed reflections(I 〉 2σ(I)).In complex 1,the L^2- anions connect Cd(Ⅱ) ions to form two-dimensional metal-organic layers(Cd_2L_2)n,in which the 1D helical chains(Cd-L)_n are alternately arranged in a right-and left-handed sequence.These layers are further linked to build a 3D network by the bpa ligand.In addtion,photoluminescent properties for 1 are also investigated.
文摘The reverse ATRP of MMA using AIBN/FeCl3/ isophthalic acid as the initiating system was successfully performed. The new initiating system can be used to synthesize PMMA with high molecular weight and narrow polydis-persity index. The polymerization shows ’living’/controlled characteristics. Compared with other initiating system used in reverse ATRP, the easy availability and non-toxicity of isophthalic acid make it very attractive.
基金Supported by the National Natural Science Foundation of China(Nos.21405006, 21301009) and the Key Scientific Research Projects in Colleges and Universities in Henan Province, China(No. 15A150031).
文摘A novel heterometallic-organic framework(HMOF), namely [ZnBa(1,3-BDC)2(DMA)2],(I)(DMA=N,N- dimethylacetamide), was synthesized by means of solvothermal method from isophthalic acid(1,3-BDC) ligand and relevant metal salts as raw materials. The single-crystal X-ray diffraction analysis result demonstrates that compound 1 is a three-dimensional(3D) framework including heterometallic tetranuclear [Zn2Ba2(COO)s] clusters as building subunits, which could be simplified into an eight-connected body-centered cubic(bcu) topological net. At room tem- perature, compound l displays strong blue luminescence in solid state. Furthermore, the quantum yield and lumines- cent lifetime of compound 1 were also measured.
文摘In this study,Au nanoparticles/poly 5-[(2-hydroxynaphthalen-l-yl)diazenyl]isophthalic acid film modified glassy carbon electrode(AuNPs/poly(NDI)/GCE) has shown excellent electrocatalytic activity toward the oxidation of adrenaline(ADR),paracetamol(PAC),and tryptophan(Trp).The bare glassy carbon electrode(GCE) fails to separate the oxidation peak potentials of these molecules,while the poly(NDI) film modified electrode can resolve them.Electrochemical impedance spectroscopy(EIS)indicates that the charge transfer resistance of the bare electrode decreases as 5-[(2-hydroxynaphthalen-l-yl)diazenyl]isophthalic acid is electropolymerized on the bare electrode.Furthermore,EIS exhibits enhancement of electron transfer kinetics between analytes and the electrode after electrodeposition of Au nanoparticles.Differential pulse voltammetry results show that the electrocatalytic current increases linearly in the ranges of 0.01-680.0 μmol L^-1 for ADR,0.05-498.0 μmol L^-1 for PAC,and 3.0-632.0 μmol L^-1 for Trp;with detection limits(S/N = 3) of 0.009 μmol L^-1,0.005 μmol L^-1,and 0.09 μmol L^-1 for ADR,PAC,and Trp,respectively.The proposed method has been successfully applied for simultaneous determination of ADR,PAC,and Trp in biological samples.
基金supported by 973 Program (2006CB932900)National Natural Science Foundation of China (No. 20571074 and 20521101)
文摘The title compound, [Pd(2,2′-bipy)2](Haadip)2·4H2O, was synthesized via the hydrothermal reaction of PdCl2 with 5-aminodiacetic isophthalic acid (H4adip) in an acetic acid water solution. It was characterized by elemental analysis and infrared spectrum. Crystal data for C44H44N6O20Pd: monoclinic, space group P21/n, a = 11.0674(2), b = 9.9716(2), c= 20.5770(3)A, β = 92.7300(3)°, V = 2268.29(7)A^3, Z = 2, Mr = 1083.25, Dc = 1.586 g/cm^3, F(000) = 1112,μ = 0.499 mm^-1, 2(MoKa) = 0.71073 A, T = 293(2) K, 2θmax = 51.38°, GOOF = 1.067, R = 0.0268 and wR = 0.0710 for 3770 reflections with 1 〉 2σ(I). X-ray diffraction studies reveal that the title compound has an interesting 3D microporous architecture via hydrogen bonds with the cations located inside the channel.
基金supported by the Natural Science Foundation of Shaanxi Province(2018JQ2079,2018JQ2040,2018JM2055)
文摘A three-dimensional(3 D) Cd-based metal-organic framework(MOF), [Cd(H2 O)(PAA)]·(H2 O)2(complex 1) has been rationally designed and synthesized by using 4-(pyrimidin-5-yl)isophthalic acid(H2 PAA) and Cd(NO3)2·4 H2 O under solvothermal conditions. The structure has been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, powder X-ray diffraction(PXRD) and thermogravimetric analyses(TGA). Single-crystal X-ray diffraction analyses reveal that complex 1 consists of a 3 D network with one-dimensional(1 D) channels. Moreover, 1 exhibits strong luminescent emission in solid state at room temperature. Fluorescence quenching was observed when treating complex 1 with picric acid(PA), 2,4-dinitrophenylhydrazine(2,4-DNPH) and p-nitroaniline(p-NA), revealing that the as-synthesized complex could be used as a luminescence sensor for the detection of PA, 2,4-DNPH and p-NA.
基金Project supported by the National Natural Science Foundation of China (No. 20671064)Foundation of Education Committee of Liaoning Province (No. 2005336)
文摘A binuclear complex [Cu2(phen)2(ip)(Hip)2].4H2O has been synthesized by the reaction of Cu(CH3COO)2.H2O, phen(1,10-phenanthroline) and isophthalic acid (H2ip) under hydrothermal condition. Elemental analysis, IR spectra and X-ray single-crystal diffraction were carded out to determine the composition and crystal structure. Crystal data for this complex: monoclinic, space group C2/c, a = 19.214(3), b = 10.6973(14), c = 22.567(3) A, β = 105.081(2)°, C24H19N2O8Cu, Mr= 526.95, Z = 8, F(000) = 2160, V= 4478.6(10) A3, Dc = 1.563 g/cm^3,μ = 1.030 mm^-1, -24≤h≤ 16, -13≤k≤13, -28≤l≤28, R = 0.0369 and wR = 0.0819 for 4615 (Rint = 1.0357) independent reflections and 3290 observed ones (I 〉 2σ(I)). Structural analysis shows that coordination geometry of Cu( Ⅱ ) is a planar square, and the title complex exhibits a 2-D framework supramolecular structure by hydrogen bonds and π-π stacking interactions.