摘要
合成了一种新配合物1(R),2(R)-二(2-苯并咪唑)乙二醇四核铜犤Cu4(bbmed)4Cl2L2犦·Cl2(CH3OH)5(H2O)2(L=MeOH或H2O,Hbbmed=1(R),2(R)-二(2-苯并咪唑)乙二醇,bbmed表示去质子后的配体)(简称Cu?-bbmed)。该晶体经X-射线衍射确定为正交晶系,空间群C2221(20),晶胞参数a=1.7424(5),b=2.4942(7),c=3.8887(11)nm,V=16.900(8)nm3,Z=4,Dc=1.427g·cm-3,F(000)=7472。并对它进行了元素分析、IR、1HNMR及ESR表征。
A new tetranuclear copper? complex of the 1(R),2(R) bis(1 H benzoimidazol 2 yl)ethane 1,2 diol[Cu4(bbmed)4Cl2L2]·Cl2(CH3OH)5(H2O)2( L=MeOH or H2O,Hbbmed=1(R),2(R) bis(1 H benzoimidazol 2 yl)Ethane 1,2 diol, bbmed=deprotonated ligand ) has been synthesized by the reaction of 1(R),2(R) bis(1 H benzoimidazol 2 yl)ethane 1,2 diol with CuCl in methanol and the stirring in air is carried out for them at room temperature for 24h. The single crystal X ray analysis indicates that the crystal is orthorhombic, the space group C2221(20) with a=1.7424(5),b=2.4942(7),c=3.8887(11) nm,V=16.900(8)nm3,Z=4,Dc=1.427g·cm-3, F(000)=7472. The complex has been characterized by elemental analyses, IR spectra,1H NMR and ESR. The crystal consists of two kinds of tetranuclear copper molecules, named [Cu4(bbmed)4Cl2(MeOH)2]·Cl2(CH3OH)5(H2O)2 (type A) and [Cu4(bbmed)4Cl2(H2O)2]· Cl2(CH3OH)5(H2O)2 (type B). Both of them have C2 symmetry. Each Cu? atom of the complex is five coordination and is found in a elongated tetragonal pyramid coordination environment. Besides two O from deprotonated Hbbmed ligands and two N from benzoimidazol group attached to the Cu, the fifth coordination atom is Cl or O of the water or the methanol molecule. Two kinds of tetranuclear copper molecules have two μ oxygen Cu2O2 units and bridged by ligands though C,N of the benzoimidazol group and O of the deprotoned hydroxy group to form 12 membered ring structure.Tetranuclear Cu? atoms form a slightly distorted tetrahedron.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2001年第4期513-517,共5页
Chinese Journal of Inorganic Chemistry
基金
高等学校实验室访问学者基金资助项目
