Synthesis, Crystal Structure and Properties of a Chiral 3D Supramolecular Coordination Polymer [Co(HL)·(DMF)]_n from 5-(Imidazol-1-ylmethyl)isophthalic Acid

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.

Hydrogen-bonded Supramolecular Rosette Ribbon Constructed from Melamine with Isophthalic Acid

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.

Solubilities of Isophthalic Acid in Acetic Acid ＋ Water Solvent Mixtures

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.

Synthesis, Crystal Structure and Photoluminescent Property of a 3D Hydrogen-bonded Supramolecular Compound with Large Channels

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.

Helical Coordination Polymer with a 3-Fold Interpenetration Structure Based on 5-(Hydroxymethyl)isophthalic Acid

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.

Synthesis, Crystal Structure and Biological Activities of Novel Anthranilic(Isophthalic) Acid Esters

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.

A Novel 3D Supramolecular Framework of Poly[(5-(oxidediphenylphosphino)isophthalate)zinc(Ⅱ)]: Syntheses and Structure

A novel metal-organic framework, namely [Zn（C20H13OsP）]n （1）, has been hydro- thermally synthesized through the reaction of 5-（oxidediphenylphosphino）isophthalic acid （H2L） with Zn（II） salt. The title compound crystallizes in monoclinic, space group P21/c with a = 11.0966（10）, b = 14.5651（14）, c = 14.7311（15） A, fl = 130.022（6）°, C2oH13OsPZn, Mr = 429.64, V= 1823.3（3） ./k3, Dc = 1.565 g/cm3, F（000） = 872, g = 1.463 mm＂1, S = 1.054 and Z = 4. The final R = 0.0270 and wR = 0.0739 for 2769 observed reflections with 1 〉 20（/）. In the title complex, the Zn2（CO2）2 binuclear clusters are linked by L2- ligands to result in a pillared layer structure in the bc plane, which is a （4,4）-net composed of helical chains with opposite chirality by sharing Zn2（CO2）2 units. Adjacent＇layers are further associated together through Zn-O bonds involving the metal center and the oxygen atom of P=O group to achieve a 3D architecture, in which one-dimensional qua＆angled channel displays the interweaving of two pairs of coaxial double-helical chains with opposite chirality. The luminescence property and thermogravimetric analysis of the title complex were investigated.

Syntheses, Crystal Structures and Properties of Two Metal-organic Complexes Based on 5-(4-Pyridyl)-methoxyl Isophthalic Acid

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.

A Zn(Ⅱ) Coordination Polymer Based on a Flexible Polycarboxylate Ligand 5-(4-Hydroxypyridinium-1-ylmethyl)-isophthalic Acid: Synthesis, Structure, and Property

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.

Syntheses and Crystal Structures of One-dimensional Ni(Ⅱ) Complexes with 5-Tert-butyl Isophthalic Acid

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.

Syntheses and Characterizations of Cd(Ⅱ) and Pr(Ⅲ) Complexes Based on 5-(Tetrazol-5-yl) Isophthalic Acid

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.

Synthesis,Crystal Structure and Properties of a Zinc(Ⅱ) Complex Based on 5-(1H-Tetrazol-5-yl)isophthalic Acid Ligand

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.

Synthesis and Crystal Structure of a Two-dimensional Cobalt Complex with 5-Tert-butyl Isophthalic Acid

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.

Syntheses, Structures and Properties of Three Novel La(Ⅲ)/Co(Ⅱ) Coordination Polymers Based on 5-(3-(Tetrazo-5-yl)phenyl)isophthalic Acid

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.

Syntheses and Crystal Structures of Co(Ⅱ)Complexes with 5-Tert-butyl Isophthalic Acid

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.

Hydrothermal Synthesis,Crystal Structure and Properties of a Novel 3D Metal-organic Coordination Polymer with Helical Chains Based on 5-(Imidazol-1-ylmethyl)isophthalic Acid

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.

Hydrothermal Synthesis and Crystal Structure of a Novel Isophthalate-bridged Copper(II) Polymer with Two-dimensional Network Structure: [Cu_2(phen)(ipt)_2]_(2n)·nH_2O (ipt = isophthalate, phen = 1,10-phenanthroline)

A novel metal-organic coordination polymer [Cu2（phen）（ipt）2]2n-nH2O 1 has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction. The complex crystallizes in monoclinic, space group P21/c with a = 12.338（3）, b = 12.167（3）, c = 18.167（4）A, β= 111.686（14）°, V = 2534.1（10）A^3, C28H18Cu2N2O9, Mr = 653.52, Dc = 1.713 g/cm^3,μ（MoKα） = 1.740 mm^-1, F（000） = 1320, Z = 4, the final R = 0.0443 and wR = 0.0853 for 3543 observed reflections （1 〉 2σ（I））. It exhibits a novel two-dimensional network with tetra-Cu-ipt-as building units.

A Novel 3D Cd-based Luminescence Metal-organic Framework: Synthesis, Structure and Luminescent Sensing Properties

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.

Synthesis and Crystal Structure of the Binuclear Complex:[Cu_2(phen)_2(ip)(Hip)_2]·4H_2O

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.

Synthesis and Crystal Structure of a Novel Double Ladder-like Cadmium Coordination Polymer Constructed by Isophthalate and Imidazole

A novel double ladder-like cadmium coordination polymer with isophthalate as bridging ligands and imidazole as non-chelating capping ligands was obtained by a hydrothermal reaction. The crystal is of triclinic, space group P1 with a = 10.266（2）, b = 11.573（2）, c = 12.651（3） A, α = 89.95（3）, β= 74.64（3）,γ = 68.54（3）°, C50H44Cd4N12O18, Mr = 1550.57, V= 1341.1（5）A3, Dc = 1.920 g/cm3, F（000） = 764, p = 1.651 cm-1 and Z = 1. The final refinement gave R = 0.0342 and wR = 0.0738 for 5925 observed reflections with I 〉 2σ（I）. The crystal structure involves two different ladder-like chains, which are further connected to form a ladder-like double chain architecture via hydrogen bonding interactions, extending along the b axis. The weak interactions including hydrogen bonds and π-π staking interactions contribute to the alignment of the complex in the crystalline state.