Synthesis, Structure and Properties of a Novel Copper(Ⅱ)-2,2'-biimidazole Complex-supported Compound:Cu(H2biim)2{Cu(H2biim)22H10W12O44}·8H2O

摘要

A new copper(Ⅱ)-2,2-biimidazole metal-organic POMs-supported compound[Cu(H2biim)2]{[Cu(H2biim)2]2[H10W12O44]}·8H2O(H2biim=2,2-biimidazole)has been successfully synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction,IR spectroscopy,elemental analysis and TG.The crystal adopts space group P1 with a=11.800(2),b=13.437(3),c=13.685(3),V=1922.5(7)3,Dc=3.507 g/cm3,C36H62Cu3N24W12O52,Mr=4059.92,F(000)=1837,μ=18.796 mm-1,Z=1,R=0.0579 and wR=0.1465 for 8734 observed reflections(I>2(I)).X-ray crystallography analysis exhibits that the title compound consists of one[H10W12O44]6-polyanion and three[Cu(H2biim)2]units.And significantπ-πstacking interactions and intermolecular O–H···O or N–H···O hydrogen-bonding interactions lead to a three-dimensional supramolecular framework.Thermal stability and magnetic property of the complex have also been investigated.