Assembly of cyano-bridged Cu(II)/Cu(II) and Cu(I)/Cu(II) compounds obtained by controlled ration of cyanide
摘要:
One reaction system of Cu(2+), dipn, and CN(-) with two different molar ratio sets of 1: 1: 5, and 2:1:8 produced two compounds I [Cu(II)- (dipn)][Cu(II)(CN)(I)(4)], and 2 [Cu(II)(dipn)](2)[CU(4)(I)(CN)(8)]center dot 2H(2)O, respectively (dipn = dipropylenetriamine). Their structures were determined 4 by X-ray crystallography. Compound 2 is built from Cu(I) and Cu(II) centers, which are bridged by cyanide groups and metal-metal bonds. The magnetic properties of 1 and 2 were investigated in 2-300 K. Compound 1 exhibits an antiferromagnetic exchange interaction between copper(II) ions mediated by cyano-bridges. (c) 2007 Elsevier B.V. All rights reserved.