乙二胺双缩3-醛基水杨酸Schiff碱铜镍异双核配合物的晶体结构

合成了乙二胺双缩3-醛基水杨酸Sch iff碱铜镍异双核配合物CuN i(ES)(H2O)2.H2OH4ES为N,N′-二(3-醛基水杨酸)缩乙撑二胺],用单晶X-ray衍射法测定了晶体结构,该晶体属六方晶系,空间群P322I,晶胞参数a=1.283 90(18)nm,b=1.283 90(18)nm,c=0.995 7(2)nm,α=90°,β=90°,γ=120°,V=1.421 4(4)nm3,C18H18CuN iN2O9,Mr=528.59,Z=3,ρ=1.853 g/cm3.在配合物中,Cu处于由两个氮原子和两个酚氧原子所形成的平面四方场中,N i处于由两个酚氧原子、两个羧基氧原子和两个轴向水分子氧所形成的六配位变形八面体场中,且内部铜原子和外部镍原子通过两个酚氧原子桥联起来.

Crystal Structure of Copper-Nickel Heterobinuclear Complex with Schiff Base Ligand of N, N'-Bis(3-carboxyl-2-hydroxy-benzylidene)-ethane-1,2-diamine

The Cu~(Ⅱ)Ni~(Ⅱ)heterobinuclear complex CuNi(ES)(H_(2)O)_(2)·H_(2)O,where H_(4)ES denotes the binucleating ligand derived from the Schiff base N,N′-bis(3-carboxyl-2-hydroxy-benzylidene)-ethane-1,2-diamine,was synthesized and its crystal structure was determined by single-crystal x-ray diffraction method.This complex crystalizes in hexagonal,space group P3_(2)2I with a=(1.283 90(18) nm),b=(1.283 90(18) nm),c=0.995 7(2) nm,α=90°,β=90°,γ=120°,V=1.421 4(4) nm~(3),C_(18)H_(18)CuNiN_(2)O_(9),M_(r)=528.59,Z=3,ρ=1.853 g/cm~(3).In the complex,the copper atom is coordinated by two nitrogen atoms and two phenolic oxygen atoms in a square-plane manner.The nickel atom is coordinated by two phenolic oxygen atoms,two equatorial carboxyl oxygen atoms and two axial water oxygen atomsin a distorted octahedral geometry,the inner copper atomand the outer nickel atom are bridged by two phenol oxygen atoms.