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Chinese Journal of Structural Chemistry 2008年第5期27卷 616-621页

作者： XIE Ling LIU Gang WANG Yan WANG Ji-De CHEN Jun-Feng Department of Chemistry Key Laboratory of Oil ＆ Gas Fine Chemicals Ministry of Education Xinjiartg University Urumqi 830046 China

Two new schiff base N,N＇-bis（（2-phenyl-2H-1,2,3-triazol-4-yl）methylene）-1,3-propanediamine （1） and N,N＇-bis（（2-phenyl-2H-1,2,3-triazol-4-yl）methylene） -1,4-butanediamine （2） were synthesized by condensation of 2-phenyl-1,2,3-triazole-4-carboxaldehyde with diamine, and characterized by elemental analysis, IR, IH NMR and MS spectra. Their crystal structures were determined by X-ray single crystal diffraction. Both crystals belong to the monoclinic system, space group P21/c. For compound 1（C21H20N8, Mr=384.45）： a = 16.314（3）, b =5.7168（11）, c = 21.316（4） A, β = 105.3（2）°, Z = 4, V = 1917.6（7） A^3, De =1.332 g/cm^3, F（000） = 808,μ = 0.086 mm 1, R = 0.0533 and wR = 0.1460; for compound 2 （C22H22N8, Mr=398.48）： a = 8.6156（17）, b = 5.2964（11）, c = 22.665（5）A, β = 100.54（3）°, Z = 2, V = 1016.8（4） A^3, De= 1.302 g/cm^3, F （000） = 420, μ = 0.083 mm^-1, R = 0.0373 and wR = 0.1155. based on the crystal data, quantum chemistry calculation was performed on the two title compounds by means of Gaussian 98 program. The molecular orbital energies and atomic net charges population were obtained. Furthermore, we antilyzed their active atoms. The investigation can serve as a theoretical guide to study the synthesis and activity of the title compounds.

关键词： schiff base crystal structure quantum chemical calculation

Syntheses,Crystal Structures and Kinetic Mechanisms of Thermal Decomposition of Rare Earth Complexes with schiff base Derived from o-Vanillin and p-Toluidine

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Journal of Rare Earths 2006年第3期24卷 268-275页

作者：赵国良冯云龙温一航 College of Chemistry and Life Science Zhejiang Normal University Jinhua 321004 ChinaZhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces Jinhua 321004 China

Three complexes, [Pr（NO3）3（HL）2] （1）, [Nd（NO3）3（HL）2] （2） and [Er（NO3）3（HL）2] ·0.5H2O （3）, were synthesized from the reaction of a schiff base ligand 2-[ （4-methylphenylimino）methyl ]-6-methoxyphenol （C15 H15 NO2, HL） with Ln（NO3）3·6H2O （Ln = Pr, Nd, Er）. Characterization by single-crystal X-ray diffraction technique, elemental analysis, molar conductance, FT-IR, UV-Vis, ^1H NMR and thermal analysis shows the title complexes are neutral molecules where the central Ln（ Ⅲ） ion is ten-coordinated in biapical anti-hexahedron prism geometry, with four oxygen atoms of the phenolic hydroxy and methoxy groups in the two bidentate schiff base ligands and six oxygen atoms provided by the three bidentate NO3 - anions. Additionally, the kinetic mechanism of thermal decomposition of complex 3 was determined with a TG-DTG curves by both integral and differential methods. The functions of thermal decomposition reaction mechanism and the equation of kinetic compensation effect were obtained.

关键词： o-vanillin p-toluidine schiff base crystal structure kinetic mechanism of thermal decomposition rare earths

Syntheses, Characterizations, Crystal Structures and Antibacterial Activities of Two Zinc(II) Complexes with a schiff base Derived from o-Vanillin and p-Toluidine

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Chinese Journal of Structural Chemistry 2007年第12期26卷 1395-1402页

作者：余玉叶赵国良温一航 Jinhua College of Profession & Technology Jinhua Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces Institute of Physical Chemistry Zhejiang Normal University

Two new zinc（Ⅱ） complexes, [Zn2L2Ch].2[ZnL（CH3OH）Cl2] 1 and [ZnL2（NO3）2] 2, were synthesized by reacting ***2O （X = Cl^-, NO3^-） and a schiff base ligand 2-[（4-methylphenylimino）methyl]-6-methoxyphenol （C15HIsNO2, L） which was obtained by the condensation of o-vanillin （2-hydroxy-3-methoxybenzaldehyde） with p-toluidine. Both 1 and 2 were characterized by single-crystal X-ray diffraction technique, elemental analysis, molar conductance, FT-IR, UV-Vis, IH-NMR spectra and thermogravimetrie analysis. The schiff base ligand and its zinc（Ⅱ） complexes have been tested in vitro to evaluate their antibacterial activity against bacteria, viz., Escherichia Coli, Staphylococcus aureus and Bacillus Subtilis. The results show that these complexes have higher activity than the corresponding free schiff base ligand against the same bacteria.

关键词： o-vanillin p-toluidine schiff base zinc(Ⅱ) complex crystal structure antibacterial activities

Synthesis and Pyrolysis of Soluble Cyclic Hf-schiff base Polymers

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Chinese Journal of Polymer Science 2021年第6期39卷 659-664,I0005页

作者： Yu-Huan Wu Li Ye Ya-Nan Sun Wei-Jian Han Tong Zhao Key Laboratory of Science and Technology on High-tech Polymer Materials Institute of ChemistryChinese Academy of SciencesBeijing 100190China University ofChinese Academy of Sciences Beijing 100049China

Soluble Hf-containing polymers are significant processable precursors for the fabrication of ultra-high temperature *** this work,cyclic Hf-schiff base polymers were synthesized via direct polymerization of hafnium alkoxide and bis-salen *** defined structure and molecular weight of the polymers were characterized by NMR spectroscopy,gel permeation chromatography and MALDI-TOF mass *** feed ratio of monomers regulated the molecular weight and solubility of the *** synthetic strategy features simple operation under ambient conditions,efficient reaction with high yield and cyclic polymers as the main *** Hf-schiff base polymers were converted to HfC/C materials after pyrolysis under argon at 1600°C,which was identified by XRD measurements,elemental analyses and Raman *** work will inspire more precise and efficient synthesis and applications of metallopolymers.

关键词： Hf-containing polymer schiff base Cyclic polymer Preceramic polymer Hafnium carbide

Synthesis, characterization, and anticancer properties of rare earth complexes with schiff base and o-phenanthroline

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Journal of Rare Earths 2008年第5期26卷 643-647页

作者：许东芳马树芝杜广营何其庄孙大志 Department of Chemistry Shanghai Normal University School of Pharmacy Yantai University

Five novel ternary complexes of the rare earth ions with o-phenanthroline（Phen） and schiff base salicylaldehyde L-phenyla- lanine（KHL） were synthesized in ethanol. Their compositions were characterized by elemental analysis, molar conductance, ^1H NMR, FT-IR, and Raman spectra. The formulas of the complexes were verified to be RE（L）（Phen）Cl（H2O）（RE=La^3＋, Ce^3＋, Nd^3＋, Er^3＋, and Gd^3＋; L=schiff base salicylaldehyde L-phenylalanine; phen=o-phenanthroline）. Methyl thiazolyl tetrazolium （MTT） colorimetry and flow cytometry were used to test the anticancer effect of the complexes with K562 tumor cell. The research showed that the complexes could inhibit K562 tumor cell＇s growth, generation, and induce apoptosis. The inhibition ratio was accelerated by increasing the dosage, and it had significant positive correlation with the medication dosage.

关键词： complex o-phenanthroline schiff base anticancer rare earths

Syntheses, Crystal Structures and Fluorescent Properties of Two New Imidazolidino schiff base Compounds

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Chinese Journal of Structural Chemistry 2008年第4期27卷 455-460页

作者：冯悦刘罡田秀梅王吉德王蔚 School of Chemistry and Chemical Engineering Key Laboratory of Oil & Gas Fine Chemicals Ministry of Education Xinjiang University

Two new imidazolidino schiff base compounds, （E）-N-（（quinoxalin-2-yl）methylene）- 2-（2-（quinoxalin-3-yl）imidazolidin-1-yl）ethanamine 1 and 2-（1-（2-（2-（quinoxalin-3-yl）imidazolidin- 1-yl）ethyl）imidazolidin-2-yl）quinoxaline 2, have been synthesized and characterized by elemental analysis, ^1H NMR, IR, MS and single-crystal X-ray diffraction. Crystallographic data for 1： C22H21N7, Mr = 383.46, monoclinic, space group P21, a = 7.0036（14）, b = 6.9151（14）, c = 19.701（4）A, β = 96.57（3）°, Z = 2, V = 947.9（3）A^3, Dc = 1.344 g/cm^3, F（000） = 404, μ = 0.085 mm^-1, Flack parameter = 0（2）, R = 0.0464 and wR = 0.1055; and those for 2： C24H26N8, Mr = 426.53, triclinic, space group PI, a = 9.6680（19）, b = 10.334（2）, c = 11.389（2）A, α= 104.12（3）, β = 102.95（3）, γ= 100.48（3）°, Z= 2, V = 1041.2（4）A3, Dc= 1.361 g/cm^3, F（000） = 452, μ = 0.086 mm^-1, R = 0.0373 and wR = 0.1155. For the two compounds, the five-membered imidazolidine rings all adopt envelope conformation. Moreover, the title compounds show one-dimensional layered and three-dimensional supramolecular chainlike structures, respectively. Fluorescent properties of the two compounds have been investigated in the solid state at room temperature. Compound 1 exhibits strong fluorescence and thus may serve as excellent candidates of green fluorescent materials.

关键词： schiff base imidazolidine synthesis crystal structure fluorescence

Synthesis and Crystal Structure of a Co(II) Complex with schiff base and Imidazole Ligand

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Chinese Journal of Structural Chemistry 2006年第5期25卷 567-571页

作者： WU Lian-Bin HU Zi-Qiang LAI Guo-Qiao Key Laboratory of Organosilicon Chemistry and Material Technology of Education Ministry Hangzhou Teachers University Hangzhou 310012 China

The title compound, [Co（C3H4N2）2（C22H18N2O4）]·5H2O （Mr = 659.56）, has been prepared and its crystal structure was determined by X-ray diffraction method. The crystal belongs to monoclinic, space group P21/n, a = 9.6808（2）, b = 26.7204（5）, c = 12.7993（3） A, β = 100.9340（10）°, V= 3250.75（12） A^3, Z = 4, Dc = 1.348 g/cm^3,μ = 0.586 mm^-1, F（000） = 1380, S = 1.131, R = 0.0689 and wR = 0.1883 for 4782 observed reflections （Ⅰ 〉 2σ（Ⅰ））. The title crystal consists of Co（Ⅱ） complex and lattice water molecules. The Co（Ⅱ） complex assumes a distorted octahedral coordination geometry, formed by one schiff base dianion phenylenediamine-3-methoxysali-cylaldehyde and two imidazole ligands. The π-π stacking interaction occurs between nearly parallel benzene rings of the neighboring complexes.

关键词： cobalt(Ⅱ) complex schiff base crystal structure π-π stacking

Syntheses and Characterizations of Cu Ln Heterobinuclear Complexes with schiff base from 3-Formylsalicylic Acid and Ethylene Diamine

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Journal of Rare Earths 2000年第2期18卷 148-151页

作者：陶偌偈杨国忠于兆文周绪亚 Chemistry and Chemical Engineering College Henan University Kaifeng 475001 China Department of Building Engineering Henan University Kaifeng 475001 China

Seven heterobinuclear complexes of Cu-Ln with N, N'-bis(3-carboxylsali cylidene) ethylenediamine(ES) were synthesized and characterized by elemental analysis, molar conductivity, thermogravimetry, IR and electronic spectra. The room temperature magnetic moments show that there are basically no spin exchange interactions between the ions of Cu2+ and Ln(3+) in the CuLnESCl . nH(2)O compounds.

关键词： rare earths schiff base 3-formylsalicylic acid heterobinuclear complexes

Synthesis and Crystal Structure of a Dinuclear Cu(II) Complex [Cu(C_(12)H_(17)N_2O)(NCS)]_2 with Tridentate schiff base Ligand N-(Salicylidene)-3-dimethylaminopropylamine

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Chinese Journal of Structural Chemistry 2005年第3期24卷 346-348页

作者：林鸿冯云龙 JinhuaProfessional-TechnicalCollege Jinhua321017China InstituteofPhysicalChemistry ZhejiangNormalUniversityJinhua321004China／／JinhuaProfessional-TechnicalCollegeJinhua321017China

A new dinuclear copper(II) complex (Cu(C12H17N2O)(NCS)2, C26H34Cu2N6O2S2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclinic system, space group P1 with a = 11.289(2), b = 12.071(2), c = 12.113(2) ?, α = 72.90(3), β = 83.76(3), γ = 65.60(3)°, V = 1436.7(5) ?3, Z = 2, Mr = 653.79, F(000) = 676, Dc = 1.511 g/cm3, μ(MoKα) = 1.660 mm?1, the final R = 0.0334 and wR = 0.0856 for 5047 observed reflections (I > 2σ(I)). The asymmetric unit comprises two half-molecules. The complex is a centrosymmetric dimmer in which each copper(II) is coordinated in the equatorial plane to the N-(salicylidene)-3- dimethylaminopropylamine ligand through the deprotonated phenolic oxygen atom as well as the nitrogen atoms of imine and amine. The fourth coordination site is occupied by the nitrogen atom of NCS?, while the axial one by the symmetrically related phenoxy oxygen of the other monomeric unit. The Cu(II)…Cu(II) average distance is 3.110(1) ?.

关键词： dimethylamino-1-propylamine salicylaldehyde schiff base Cu(II) complex crystal structure

Synthesis and Crystal Structure of a Dinuclear Cu(II) Complex with Tridentate schiff base and Azido Bridge

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Chinese Journal of Structural Chemistry 2005年第4期24卷 375-378页

作者： LINHong FENGYunLong GAOShan InstituteofPhysicalChemistry ZhejiangKeyLaboratoryforReactiveChemistryonSolidSurfacesZhejiangNormalUniversityJinhua321004China iangUniversity Harbin150080China

A new dinuclear copper(II) complex ([Cu(C12H17N2O)(N3)]2, C24H34Cu2N10O2) has been synthesized and characterized by X-ray structure determination. It crystallizes in the monoclinic system, space group P21/c with a = 18.529(4), b = 10.933(2), c = 14.534(3) ?, β = 111.07(3)°, V = 2748(1) ?3, Z = 4, Mr = 621.69, F(000) = 1288, Dc = 1.503 g/cm3 and μ(MoKα) = 1.590 mm?1. The structure was refined to R = 0.0647 and wR = 0.1846 for 4406 observed reflections (I > 2σ(I)). The asymmetric unit comprises two halfmolecules. The complex is a centrosymmetric dimmer in which the copper atoms are penta-coordinated by three coordination atoms from the corresponding tridentate schiff base ligand and two bridging azide anions. The Cu(II)…Cu(II) average distance is 3.350(1) ?.

关键词： dimethylamino-1-propylamine salicylaldehyde schiff base Cu(II) complex crystal structure bridging azide