title: Bis{μ-2,2'-[o-phenyl-enebis(nitrilo-methyl-idyne)]diphenolato}dicopper(II) N,N'-dimethyl-formamide disolvate.
abstract: The title compound, [Cu(2)(C(20)H(14)N(2)O(2))(2)]·2C(3)H(7)NO, consists of a centrosymmetric dimer composed of two copper(II) ions and two tetra-dentate salphen ligands {H(2)salphen is 2,2'-[o-phenyl-enebis(nitrilo-methyl-idyne)]diphenol}, and two dimethyl-formamide solvent mol-ecules. The Cu(II) atom is bonded to two N imino atoms and three phenolate O atoms of salphen. One deprotonated phenol group of each ligand bridges two Cu atoms, forming the dimer. The geometry about the five-coordinate Cu atom can best be described as slightly distorted recta-ngular pyramidal. The crystal structure is stabilized by π-π inter-actions [centroid-centroid distance 3.779 (2) Å] and C-H⋯O hydrogen bonds.
authors.affiliation: Department of Chemistry, Xiaogan University, Xiaogan, Hubei 432000, People's Republic of China.
authors.forename: Guofeng
authors.initials: G
authors.lastname: Yu
authors.forename: Yu
authors.initials: Y
authors.lastname: Ding
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Zhengbing
authors.initials: Z
authors.lastname: Fu
authors.forename: Xinliang
authors.initials: X
authors.lastname: Hu