title: Diacetonitrile-1kappaN,3kappaN-bis{mu-trans-N-[3-(dimethylamino)propyl]-N'-(2-hydroxyethyl)oxamidato(2-)}-1:2kappa(5)N,N',O:O',N'';2:3kappa(5)O',N'':N,N',O-dithiocyanato-1kappaN,3kappaN-tricopper(II).
abstract: The title compound, [Cu(3)(C(9)H(17)N(3)O(3))(2)(NCS)(2)(CH(3)CN)(2)], contains two square-pyramidal Cu(II) units chelated by a transoid asymmetrical N-[3-(dimethylamino)propyl]-N'-(2-hydroxyethyl)oxamidate (dmapheoxd) dianion {H(2)dmapheoxd is N-[3-(dimethylamino)propyl]-N'-(2-hydroxyethyl)oxamide}, which coordinates to another Cu(II) ion in a square-planar environment lying on a crystallographic inversion center. Thus, the trans-oxamide ligand bridges two Cu(II) ions with different coordination numbers, and this is the first instance of such a zero-dimensional oxamide-bridged complex. The activated methyl group in the coordinated acetonitrile molecule is involved in a strong nonclassical C-H...O hydrogen bond, which contributes to a one-dimensional chain extending in the b direction. Considering the presence of weak bonding between the Cu atom and the uncoordinated hydroxyl O atoms, a two-dimensional structure is formed parallel to the ab plane.
authors.affiliation: Marine Drug and Food Institute, Ocean University of China, 266003 Qingdao, People's Republic of China.
authors.forename: Jin-Liang
authors.initials: JL
authors.lastname: Liu
authors.forename: Cui-Wei
authors.initials: CW
authors.lastname: Yan
authors.forename: Yan-Tuan
authors.initials: YT
authors.lastname: Li
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Wu
authors.forename: Wan-Ju
authors.initials: WJ
authors.lastname: Zhang
mesh_terms: D003300:Copper / Q000737:chemistry*; D003461:Crystallography; D006860:Hydrogen Bonding; D015394:Molecular Structure
chemical_list: D003300:Copper