一种三维手性聚合物材料[Zn(H_2O)(glu)]n的合成与结构

Synthesis and Structure of A Three-dimensional Chiral Polymer:[Zn(H_2O)(glu)]n

以L-谷氨酸与硝酸锌为原料合成了一种三维手性聚合物材料[Zn(H2O)(glu)]n(1),对其进行了元素分析、红外及X射线单晶衍射等表征;晶体结构分析表明该材料属正交晶系,P212121空间群,晶胞参数:a=7.144(2)°A,b=10.355(3)°A,c=11.065(4)°A,V=818.6(5)°A3,Z=4.它是由L-谷氨酸根的羧基桥联的螺旋链组装而成的微孔材料,孔道尺寸为9.8×5.5°A2,纳米级.有趣的是在纳米级孔道内发现了十四元环的客体水簇.

A three-dimensional chiral polymer,[ Zn（H2O）（glu）]n（1）,synthesized though the solution reactions of L-glutamic acid and zinc nitrate,has been characterized by EA,IR and X-ray crystallography.X-ray crystal structure analysis reveals 1 crystallizes in the orthorhombic P212121 chiral space group,cell parameters： a = 7.144（2） A°,b = 10.355（3）A°,c = 11.065（4）A°,V = 818.6（5） A°3,Z = 4.Compound 1 is a kind of microporous polymer-material with helix chain.The helix chain is bridged by the α-carboxyl of L-glutamic acetate.The nano-pores（9.8 × 5.5 A°2） were found in the polymer,in which there are interesting guest 14-cycle water clusters.