Synthesis and Crystal Structure of Cu2 (pba) (bpy) 2 Cl2·4H2O

摘要

A new copper complex, Cu2（pba）（bpy）2Cl2·4H2O （here pba was propylenebis （oxamic acid）, bpy was bipyridine）, was synthesized. Crystal structure of the title complex was determined. It belongs to the tetragonal system, molecular formula Cu2Cl2O 10N6C 27H 32, Mr=798.58, space group P41212, a=b=9.484（4）, c=35\^918（9）, V=3235（2）3, Dx=1.64gcm -3 and F（000）=1568, μ=1\^546mm -1 for Z=4. The crystal structure was solved by direct methods for final R=0\^048 and Rw=0.060 for 1992 observed reflections with I>3σ（I）. The complex has a C2 symmetry. A chloride anion, two nitrogen atoms from bipyridine and two oxygen atoms from the oxamide carbonyl and carboxyl coordinated to the Cu II ion forming a square pyramidal geometry. In each molecule, two bpy are almost parallel.