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121.
WU Rui-Fenga b ZHANG Tong-Laia② QIAO Xiao-Jinga ZHANG Jian-Guoa YANG Lia YU Weia a 《结构化学》2006,25(7):849-853
1 INTRODUCTION Napthalene-1,4-dicarboxylate acid (1,4-NDC) has rigidity and stability because of the aryl ring and flexibility due to the carboxyl group, so it can be designed to assemble many novel microporous me- tal-organic coordinate polymer materials (MOCP) with transition metal[1~5]. In order to design and syn- thesize MOCP with specific framework structure for potential applications as functional materials, the ligand was decorated by bringing more substitutes to the aryl ring[… 相似文献
122.
1 INTRODUCTION Schiff base complexes containing sulfur and com- plexes of amino acid Schiff bases[1~5] have recently aroused increasing interest because of their antiviral, anticancer and antibacterial activities. Taurine, an amino acid containing sulfur, is indispensable to human beings and has important physiological func- tions. Recently, we have found that the Shiff base derived from taurine has manifold coordination modes[4~10]. Aromatic-ring stacking interaction is an important … 相似文献
123.
A new dinuclear copper complex, [Cu(C13H9N2O)Cl]2·(CH3CN)2 (C30H24Cl2Cu2N6O2), has been synthesized and characterized by X-ray structure determination. It crystallizes in the tricli- nic system, space group P1, with a = 7.6677(14), b = 9.2375(17), c = 11.227(2) , α = 81.338(3), β = 88.173(4), γ = 66.199(3)o, V = 718.9(2) 3, Z = 1, Mr = 698.53, F(000) = 354, Dc = 1.613 g/cm3, μ(MoKα) = 1.705 mm-1, the final R = 0.0645 and wR = 0.1364 for 2474 unique reflections with 1809 observed ones (I > 2σ(I)). In the title complex, each copper(II) atom is located at the center of a distorted tetrahedron consisting of four coordinate atoms (one nitrogen atom, two oxygen anions, and one chlorine atom). Two copper(II) atoms are bridged by two oxygen anions (O(1) and O(1a)) of two phenolates to form a Cu(II)–Cu(II) binuclear entity, and the distance between two copper(II) atoms is 3.0144(15) . 相似文献
124.
1 INTRODUCTION Great attention has currently been paid to com-pounds formed by the reaction between phosphineand metal alkynyl building blocks[1]. The ligand NP3contains one tertiary nitrogen atom as well as threephosphorous atoms and bonds to the metal ions as atetradentate ligand, affording tetrahedral[2] or triangle-bipyrimidal geometry[3, . In other coordination ca- 4]ses, one[5, , two[7], three P donors[8, 6] … 相似文献
125.
TANG Ding-Xinga② ZHAO Yunb 《结构化学》2005,(3)
1 INTRODUCTION Multinuclear coordination compounds have attrac-ted much attention due to their distinctive optical, elec-tric and magnetic properties as well as enzyme ana-logue[1~4]. It is important for carboxylic acid to de-sign this compound[5~8]. EDTA is a useful titrant formetal determination because EDTA molecule is easyto coordinate with a metal atom (1:1). Other types ofEDTA-M compounds are seldom to know except Ln2-M3(EDTA)3(H2O)11?12H2O[5] and (UO2 )2EDTA[9]. … 相似文献
126.
CHEN Jinga GAO Dong-Zhaoa WANG Shu-Pinga JIANG Zong-Huia b LIAO Dai-Zhenga YAN Shi-Pinga a 《结构化学》2005,24(7):793-799
1 INTRODUCTION The study of spin exchange interaction between metal centers through extended bridges is an active subject in the field of coordination chemistry[1~3]. Polynuclear complexes with extended ligand bri- dges are currently of considerable interest[4~6]. One of the best strategies to design and synthesize poly- nuclear species is ‘complex as ligand’ approach[4, 7]. The oxamide group is proved to be an interesting multiatomic bridge, linking metals in polynuclear complexes[8… 相似文献
127.
1 INTRODUCTION As is widely known, PCDFs together with poly- chlorinated dibenzo-p-dioxins (PCDDs) and poly- chlorinated biphenyls (PCBs) have been included in many blacklists, such as “persistent organic pol- lutants (POPs)” and suspected “environmental en- docrine disruptors (EEDs)”. This is because PC- DFs are chemically and thermally stable and com- plex PCDF mixtures are generally resistant to bio- degradation. Although the concentration of these chemicals is quite low o… 相似文献
128.
StructureofMolybdenumComplexofBenzothiazole-2-thiolate(η~5-C_5H_5)Mo(CO)_2(C_7H_4NS_2)ChengGuo-Bao~a;WuQiang-Jin~b;HuangXiao-Ying~... 相似文献
129.
Hua-jiang Jiang Wei-lin Sun Ren-hua Zheng a Department of Chemistry Materials Taizhou Colledge Taizhou China b Department of Polymer Science Engineering Zhejiang University Hangzhou China 《高分子科学》2006,(1):81-86
A series of polymeric complexes were prepared from Fe~(2 ),Co~(2 ) or Ni~(2 ) and poly(Schiff base)(DAPcIPA), which was obtained by polycondensation of 5,6-diamino-1,10-phenanthroline(DAP)with isophthalaldehyde(IPA).The structures of the polymer and the polymeric complexes were characterized by IR,~1H-NMR and elemental analysis.The magnetic behavior of these complexes was measured as a function of magnetic field strength(0-3.98×10~6 A/m)at 5 K and as a function of temperature(5-300 K)at a magnetic field strength of 2.39×10~6 A/m.Experimental results show that DAPcIPA-Ni~(2 ),DAPcIPA-Co~(2 ) are soft ferromagnets while DAPcIPA-Fe~(2 ) exhibits features of an antiferromagnet. 相似文献
130.
In the ethanol solvent, a nickel(II) complex Ni(C12H10N2O2S)2 upon reaction of 2'-(2-thienylidene)-hydroxybenzoylhydrazide with nickel acetate was synthesized, and its structure was characterized by IR, UV, elemental analysis and X-ray diffraction analysis. The crystal belongs to monoclinic system, space group C2/c with a = 22.052(3), b = 5.9681(6), c = 18.522(2) , β = 110.679(4)°, V = 2280.6(4) 3, Z = 4, Mr = 551.27, μ = 1.606 mm-1, Dc = 1.075 g/cm3, F(000) = 1136 and Rint = 0.0556. The nickel(Ⅱ ) atom in the compound is four-coordinated with two nitrogen atoms from amide and two oxygen atoms from keto group. The biological activities have been measured, show- ing the compound exhibits better anti-bacterial activity than the ligand. 相似文献