一维链状镉(Ⅱ)配位聚合物｛[Cd(PAc)_2(4,4′-bipy)(H_2O)]·4H_2O｝_n的合成、晶体结构及热稳定性研究  

Synthesis, Crystal Structure and Thermal Stability of 1D Chain Coordination Polymer {[Cd(PAc)_2(4,4′-bipy)(H_2O)]·4H_2O}_n Constructed by Phenyl Acetate Ligand

作　　者：孔丽丽[1] 高山[1] 霍丽华[1] 赵辉[1] 

机构地区：[1]黑龙江大学化学化工与材料学院功能材料室,哈尔滨150080

出　　处：《无机化学学报》2008年第4期661-664,共4页Chinese Journal of Inorganic Chemistry

基　　金：黑龙江省自然科学基金(NoB200501);黑龙江省高校骨干教师资助项目(No1054G036)

摘　　要：有机芳香羧酸配体建构的超分子配合物因其多样性的拓扑结构和在功能材料方面的潜在应用,引起化学工作者的浓厚兴趣,成为一个热门的研究领域。目前,该类配合物的研究主要集中在如对苯二甲酸、均苯三甲酸等多齿芳香羧酸刚性配体体系。苯乙酸是一类柔性的有机多羧酸配体，不仅可用于高性能工程塑料、荧光增白剂、燃料、液晶材料和有机精细化工等领域，还在医药方面有重要应用。A novel one-dimensional coordination polymer, {[Cd（PAc）2（4,4-bipy）（H2O）]·4H2O}, （HPAc=phenyl acetic acid, 4,4′-bipy=4,4′-bipyridine） was synthesized and characterized by element analysis, IR, TG and X-ray single diffraction crystal structure determination. It crystallizes in the monoclinic space group C2/c with a=2.088 5 （4） nm, b=0.83905（17） nm, c=1.683 5（3） nm, β=105.45（3）° and V=2.843 5（10） nm^3, Z=4, M,=628.94, F（000）=1 288,μ= 0.820 mm^-1, R=0.019 9, wR=0.056 5. Each cadmium（Ⅱ） atom is seven-coordinated by four oxygen atoms from two different phenyl acetate groups and two nitrogen atoms from two 4,4′-pyridine ligands and one water molecule, forming a distorted pentagonal bipyramid coordination geometry. Adjacent cadmium（Ⅱ） atoms are bridged by 4,4′- pyridine ligand, constructing a infinite chain along the diagonal direction of ac plane. The Cd…Cd separation within the polymer is 1.164 6（4） nm. The three-dimensional supramolecular structures of the title complexes are constructed by hydrogen bonding interactions and π-π stacking interactions between the benzene rings of HPAc and 4,4′-bipy.

关 键 词：镉配合聚合物 合成 晶体结构 

分 类 号：O614.242[理学—无机化学]