The key intermediate,2,6-pyridinebiformyl hydrazine(3),was synthesized from 2,6-dimethyl pyridine.Six novel Schiff bases(1a～1f) in yields of 50%～97% were prepared by the reaction of 3 with aldehydes or ketones,respectively.The structures were characterized by UV,NMR,IR and MS.The preliminary antibacterial tests showed that 1 exhibited antibacterial activity to staphylococcus aureus,proteus,colibacillus and bacillus,1d was the best of all.

Two thiostannates [Co(dien)2](H2dien)Sn2S6 (1) (dien = diethylenetriamine) and [Zn(tren)]2Sn2S6 (2) (tren = tris(2-aminoethyl)amine) were prepared under solvothermal conditions and structurally characterized. Both 1 and 2 contain dinuclear [Sn2S6]4− anions built from two SnS4 tetrahedra sharing a common edge. 1 consists of discrete [Sn2S6]4− anions with rare u-fac-[Co(dien)2]2+ and H2dien2+ as counterions, while 2 consists of neutral centrosymmetric [Zn(tren)]2Sn2S6, in which the [Sn2S6]4− anion connects two coordinatively unsaturated complex [Zn(tren)]2+ cations as a bidentate ligand via trans terminal S atoms. The different cations act as structure-directing agents that have a significant influence on the arrangement of the [Sn2S6]4− anions in their crystal structures. 2 exhibits fluorescence properties at room temperature.

A new cadmium(II) complex Cd2(OH)2(p-BDOA) (p-BDOA=benzene-1,4-dioxydiacetate) (1) has been synthesized under hydrothermal conditions and characterized by element analysis, FT-IR spectroscopy, thermal, raman spectra and luminescent analysis. X-ray crystallographic studies reveal that complex 1 displays a novel dinuclear unit in which two cadmium ions are bridged by deprotonated μ6-bridging flexible benzene-1,4-dioxydiacetic acid and μ3-OH. In 1, the dinuclear units are further assembled into a 2D supramolecular framework by flexible symmetric ligand benzene-1,4-dioxydiacetate, hydrogen bonding and C−H⋯π stacking interactions. In the solid state, complex 1 shows blue photoluminescent properties at room temperature.

水热条件下,合成了一维之字链配位聚合物[Cd（p-cpoa）（H2O）3]n（1）（p-cpoa=4-羧基苯氧乙酸阴离子）并通过元素分析,IR,TG,PL和单晶X射线衍射对其结构进行了表征。该配合物属单斜晶系,P21/c空间群,晶胞参数分别为:a=7.086（1）,b=16.288（1）,c=10.146（1）,β=100.22（1）o,V=1152.4（1）3,Z=4,Dc=2.078g/cm3,μ=1.927mm-1andF（000）=712,R=0.0145,wR=0.0385.镉离子是七配位,与两个4-CPOA的羧基氧原子和3个端基水配位形成变形的五角双锥,并被4-CPOA以双双齿螯合的形式桥连形成沿B方向的Z字形链,链内镉离子间距为10.25（1）。单链通过4-羧基苯氧乙酸和水分子之间的O-H-O氢键作用（2.828（2）,2.638（2）,2.825（2）,2.663（2）and2.728（2））形成平行于AB平面的二维层,再通过相邻层间的配位水和羧酸基强的O-H-O氢键作用堆垛成有趣的三维超分子结构。热分析结果表明在366℃前配合物是稳定的;固体荧光测定结果表明配合物于420nm处发射蓝色荧光,其荧光寿命为0.811ns。

Novel Schiff base of disalicyl imine of open chain crown ether was synthesized by the condensation of the intermediate,2,2′-bi 1,2-bioxyethyl benzaldehyde and o-amino-p-methyl-phenol.The favorable conditions of preparing the intermediate were found,i.e.pH of reacting solution was 8,the reacting time was about 13 h,the reacting temperature was 70~80 °C and the mole ratio of salicylaldehyde to 1,2-dichroloethane was 2.5 to 1.The intermediate yield was 48.0%.The conditions of synthesizing the Schiff base were that the pH of reacting solution was 8,the reacting time was about 12 h,the reacting temperature was 80 °C and that the mole ratio of o-amino-p-methyl-phenol to the intermediate was 2.4 to 1.The yield was 78.5%.The novel Schiff base was characterized by elemental,UV,IR,()~1H NMR and()~(13)C NMR analyses.

Based on the tenets of QSAR and by the structural characteristics of chromogenic reagent in the determination of zinc,molecular structure parameters such as connectivity indices,Broto-Moreau autocorrelation indices and eigenvalue 02 from edge adj.matrix were chosen and applied to establish the QSPR model.Through linear regression method,good models were got between molar absorption coefficient and maximum absorption wavelength and the molecular structure parameters of chromogenic reagent.The correlation coefficients were 0.60-0.82 and the standard deviations were 0.22-0.29.

Massive data were produced in modern science research.How to discover or summarize the law among them is one of the important issue in the face of researchers.Based on the tenets of QSAR and by the structural characteristics of chromogenic reagent in the determination of mercury, molecular structure parameters such as connectivity indices, edge adjacency indices and 2D autocorrelations were chosen and applied to establish the QSPR model.Through linear regression method, good models were got between molarabsorption coefficient and maximum absorption wavelength and the molecular structure parameters.The correlation coefficients were between 0.6-0.8 and the standard deviations were within 0.20-0.29.

Adsorption and desorption of aqueous 2, 4-dinitrophenol (2, 4-DNP) solution with 717 strongly basi anion exchange resin were investigated. Adsorption thermodynamics and kinetics as well as microwave desorption were also studied. Results indicated that the resin had high adsorption capacity of 2, 4-DNP in pH 4~11. Freundlich models could simulate adsorption equilibrium data, and adsorption was a spontaneous, exothermal and entropy decreasing process. Adsorption kinetics was satisfactory to Lagergren pseudo-second order rate equation. Intrapartical diffusion was the rate of controlling step and could be described by HSDM model. 2, 4-DNP adsorbed in the resin can be eluted, with elution rate over 90% when using 1mol/L HNO3+C2H5OH solution as a desorbent and total microwave irradiation time of 5min.