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.

Crystallization Behavior of Copolymer Poly(ethylene terephth-alate/isophthalate)(IPET)

The non-isothermal crystallization kinetics, isothermal crystallization and the morphology of crystals of the copolymer poly (ethylene terephthalate/ isophthalate )(IPET) were studied by DSC and polarized-light microscopy in this paper. DSC results indicate that the glass transition temperature Tg of IPET is slightly lower than that of poly(ethylene terephthalate) (PET), but the melting temperature Tm and the crystallization temperature Tc of PET and IPET have much difference.The difference of Tc between PET and IPET2 is about 7℃, and the difference of Tm between PET and IPET2 is about 16℃. From the kinetics analysis of the crystallization, the crystallization mechanism of all samples is of three-dimension spherulitic growth from instantaneous nuclei and the incorporation of isophthalate (IPA) decreases the crystallization rate of IPET greatly. The isothermal results indicate that the morphologies of PET and IPET crystals are all spherulite, which is in conformity to the results of nonisothermal dynamic crystallization. At the same time,the spherulite of IPET grows slower and has longer incubation time than the spherulite of PET under the same crystallization condition.

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.

Structure and Luminescent Properties of the First Cadmium Complex with Isophthalate and Di-pyrazole Ligands

The title complex [Cd（IPA）L（H2O）]n（1,H2IPA = isophthalic acid,L = 1,4-bis（pyra-zole-1-ylmethyl）benzene） has been hydrothermally synthesized,and characterized by elemental analyses,IR spectroscopy,TGA and X-ray single-crystal diffraction.It crystallizes in the triclinic system,space group P1 with a = 9.3060（6）,b = 10.2374（7）,c = 11.9706（8） ？,α = 73.804（6）,β = 77.883（5）,γ = 85.942（5）°,V = 1070.7（1） ？3,Z = 2,C22H20CdN4O5,Mr = 532.82,Dc = 1.653 g/cm3,μ = 1.062 mm-1,λ（MoKα） = 0.71073 ？,F（000） = 536,R = 0.0392 and wR = 0.0640 for 3751 observed reflections with I 2σ（I）.Crystal structure analysis showed that complex 1 has a 1D double chain structure,which is assembled together through strong O-H...O hydrogen bonding interactions between coordinated water molecules and carboxylate groups of isophthalate to form a 2D supramolecular network.In addition,the solid-state fluorescent spectrum of 1 exhibits strong emission at 364 nm.

Crystallization Behavior of Poly(ethylene terephthalate-co-ethylene isophthalate)

Crystallization behavior of poly(ethylene terephthalate-co-ethylene isophthalate)(PEIT) with different isoph-thalate contents (4%, 8% and 12%, designated asPEIT4,PEIT8 and PEIT12 respectively) has been inves-tigated by DSC and density measurement methods. Theresults show that the crystailinity of PEIT decreases withincreasing isophthalate content. However the crystallinity of PEIT8 is much smaller than that of PEIT12 whencooling from melt at a constant rate.The crystailinity ofPEIT8 cold-drawn filament shows almost the same val-

Syntheses and Crystal Structures of Two New Zinc(Ⅱ) Nitroxide Radical Complexes Bridged by Isophthalate

Two novel complexes [Zn（NIT3-py）（ip）]n 1 and [Zn（im3-py）（ip）]n 2 （NIT3-py = 2-（3＇-pyridyl）-4,4,5,5,-tetramethylimidazoline-1-oxyl-3-oxide, im3-py = 2-（3＇-pyridyl）-4,4,5,5-tetramethylimidazoline-1-oxyl, ip = isophthalate） have been synthesized and structurally determined by X-ray diffraction. Crystal data for 1： C32H36N6O8Zn, Mr= 698.04, monoclinic, space group Cc with a = 23.600（3）, b = 10.2073（12）, c = 13.4027（16）A,β = 92.586（2）°, V = 3225.3（7） A^3, Dc= 1.438 g/cm^3, F（000） = 1456,μ（MoKa） = 0.822 mm^-1, Z = 4, the final R = 0.0390 and wR = 0.1032 for 6037 independent reflections with Rint = 0.0214. Crystal data for 2： C32H36N6O6Zn, Mr= 666.04, monoclinic, space group C2/c with a = 24.434（4）, b = 13.543（2）, c = 10.2379（16） A, β = 109.024（2）°, V = 3202.8（9）A3 Dc= 1.381 g/cm^3, F（000） = 1392,μ（MoKa） = 0.820 mm^-1, Z = 4, the final R = 0.0304 and wR = 0.0658 for 2833 independent reflections with Rint = 0.0307. X-ray analysis reveals that both Zn（ Ⅱ ） ions are four-coordinated by two pyridyl-N atoms from nitroxide radicals and two carboxylate oxygen atoms to form distorted tetrahedral geometries. Each isophthalate dianion binds two Zn（ Ⅱ ） ions in a monodentate mode, leading to a I-D chain structure.

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.

A Cu(Ⅱ) Coordination Polymer with 5-Tert-butyl Isophthalate Linker:Synthesis,Crystal Structure,and Magnetic Properties

A new Cu（Ⅱ） metal-organic coordination polymer, {[Cu2（tbip）2（bie）2]·H2O}n （1, H2tbip = 5-tert-butyl isophthalic acid, bie = 1,2-bis（imidazol-1 ＇-yl）ethane）, was assembled under hydrothermal conditions by the reactions of Cu（Ⅱ） acetate with H2tbip and bie. Complex 1 was characterized by elemental analysis, IR spectroscopy and X-ray single-crystal diffraction. Complex 1 crystallizes in triclinic, space group P1, with a = 9.9145（10）, b = 13.2211（13）, c = 15.4363（15） nm, a = 87.0250（10）, β = 88.3220（10）, γ = 83.8240（10）°, V= 2008.4（3） nm3, Z = 2, Dc = 1.505 Mg/m3, F（000） = 944, g = 1.125 mm^-1, S = 1.030, the final R = 0.0336 and wR = 0.0790. The results reveal that complex 1 is a two-dimensional layered structure. In addition, magnetic properties of I were also investigated.

A Co(Ⅱ) Coordinated Polymer with 2-Fold Interpenetration 3D Architecture Based on 5-(Imidazol-1-ylmethyl)isophthalate: Hydrothermal Synthesis, Crystal Structure and Properties

One cobalt coordinated polymer with 2-fold parallel interpenetration 3D architecture based on flexible 5-（imidazol-1-ylmethyl）isophthalate （L2-） as a main ligand and 4,4＇-bipyridine （bpy） as a nitrogen-containing ancillary ligand, {[CoL（bpy）0.5（H2O）3]2}n （1）, has been obtained under hydrothermal conditions and characterized by elemental analysis, powder X-ray diffraction （PXRD）, IR spectra, Uv/vis spectra, thermal gravimetric analyses （TGA） and single-crystal X-ray diffraction. It crystallizes in monoclinic, space group C2/c with a = 26.323（4）, b = 14.696（2）, c = 26.630（4） A, β= 157.747（4）°, V = 3901.2（1） A3, Z = 8, Mr= 435.27, Dc = 1.480 g/cm3, /t= 0.923 mm^-1, Rint = 0.0900, F（000） = 1792, the final R= 0.0722 and wR = 0.0946 for 3641 observed reflections （I 〉 2tr（/））. Complex 1 exhibits a two-fold interpenetration 3D framework. As a single net of the 2-fold interpenetration structure, the L2- anion of complex 1, as a bridging ligand, connects the Co（Ⅱ） ion to form two-dimensional layers （Co3L3）n which are further linked to build a three-dimensional framework by bpy ligand.

Cytosinium Isophthalate: Crystal Structure Redetermination and Room Temperature Phosphorescence

The title compound cytosinium isophthalate(C-H2IA)self-assembly of cytosine(C)and isophthalic acid(H2IA)in aqueous media has been synthesized and the crystal structure with a reasonable protonation state is redetermined.Single-crystal X-ray diffraction analysis reveals that each asymmetric unit contains one protoned cytosine molecule and one deprotoned isophthalic acid.The proton transferred from carboxylic acid to the pyrimidine ring is disordered across an inversion center with occupancy of 0.5 and the proton located to one of the carboxylate group lies on an inversion center shared by two crystallographically equivalent oxygen atoms.In addition,the cytosine molecules are connected by complementary hydrogen bonds to form a one-dimensional tape structure.The neighboring isophthalic acids are connected via hydrogen bonds between carboxyl groups to form a one-dimensional lattice like tape.Furthermore,the adjacent organic base tapes and organic acid tapes are stacked one with another throughπ-πstacking interactions to form a three-dimensional supramolecular structure.Interestingly,C-H2IA displays a green phosphorescence in solid state at room temperature with the lifetime of 0.7 s determined by time resolved studies,indicating that supramolecular C-H2IA is a potential pure organic phosphorescent luminogens.

Synthesis, Crystal Structure and Magnetic Property of the Polymeric Ribbon: [Co(ip)(phen)]_n

A metal-organic coordination polymer [Co(ip)(phen)]n (ip = isophthalate, phen = 1,10-phenanthroline) 1 has been hydrothermally synthesized and characterized. Compound 1 crystallizes in P2/c space group with a = 8.37(2), b = 10.41(1), c = 18.36(3) ?, β = 100.41(7)o, C20H12CoN2O4, Mr = 403.25, V = 1573(4) ?3, Z = 4 and Dc = 1.703 g/cm3. Two Co(II) ions are bridged by μ-carboxylate to form a dinuclear unit, which is extended by ip ligands resulting in a ribbon-like chain. Pairs of phen ligands attach to the dinuclear units on both sides of the chain alternately. Magnetic study reveals that the interaction between the carboxylate-bridged Co(II) ions in 1 is weakly antiferromagnetic.

Effect of captopril or verapamil on intracellular sodium in cultured vascular smooth muscle cells

The effects of captopril (Cap) and verapamil (Ver)alone and in combination on intracellular Na+ concentration ([Na+]i) in cultured aortic smooth muscle cells (ASMC) of rabbits was evaluated by a direct measurement of [Na+]i with fluorescent dye sodium-binding benzofuran isophthalate (SBFI) combined with digital image. [Na+]i in resting cells was found to be 11.9 ± 0. 7 mmol/L. Angiotensin II (Ang-II, 0.1-10μmol/L) induced an increase of [Na+]i in concentration-dependent manner. Ver (0.1-10μmol/L) inhibited Ang-II (1 μmol/L)-induced increase in [Na+]i, while Cap enhanced Ang-II-induced increase in [Na+]i at 10μmol/L but not at 0.1-1μmol/L. Ver (0.1-1μmol/L)abolished enhancement of Ang-II-induced increase in [Na+]i by Cap. Thus, the inhibition of Capenhanced [Na+]i by Ver may provide a new hypothesis for the underlying molecular mechanism of synergistic effect of the combination of Ca2+ antagonists and angiotensinconverting enzyme inhibitors in controlling blood pressure.

Synthesis and Crystal Structure of a 1-D Coordination Polymer {[Cu(NIT4py)_2(ip)]·6H_2O}_n

A new complex { [Cu（NIT4py）2（ip）]·6H2O }, （NIT4py=2-（4＂-pyridinyl）-4,4,5,5-tetra methylimidazoline-1-oxyl-3-oxide and ip = isophthalate dianion） has been synthesized and structurally characterized by X-ray diffraction. It crystallizes in orthorhombic, space group Cmcm with a = 25.161（3）, b =10.045（1）, c = 15.450（2） A°, C32H48N6O14CU, Mr = 804.30, V= 3904.8（8） ,A°^3, Z = 4, De = 1.368 g/cm^3, μ（MoKa） = 0.630 mm^-1, F（000） = 1692, the final R = 0.0326 and wR = 0.0787 for 1843 independent reflections with Rint = 0.0372. Each Cu（Ⅱ） ion is four-coordinated by two carboxylate oxygen atoms and two pyridyl-N atoms from NIT4py radicals to furnish a rhombus geometry. The central Cu（Ⅱ） ion is located at an inversion center and a crystallographic two-fold axis. Each isophthalate dianion binds two Cu（Ⅱ） ions in bis-monodentate mode, leading to a 1-D chain, a＇ these 1-D chains are further linked into a 2-D network via hydrogen-bonding interactions.

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.

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.

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.

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.

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.