title: Crystal structure of aqua-{μ-N-[3-(di-methyl-amino)-prop-yl]-N'-2-(oxidophen-yl)oxamidato}(1,10-phen-anthroline-5,6-dione)dicopper(II) perchlorate hemihydrate.
abstract: The title compound, [Cu2(C13H16N3O3)(C12H6N2O2)(H2O)]ClO4·0.5H2O, consists of a cis-oxamide-bridged binuclear Cu(II) complex cation, a perchlorate anion and half a solvent water mol-ecule. One Cu(II) cation is N,N',N",O-chelated by an N-[3-(di-methyl-amino)-prop-yl]-N'-(2-hy-droxy-phen-yl)oxamide trianion in a distorted square-planar geometry, whereas the other Cu(II) cation is O,O'-chelated by the oxamide moiety of the anion and N,N'-chelated by a 1,10-phenanthroline-5,6-dione mol-ecule, and a water mol-ecule further coordinates the second Cu(II) cation, completing a distorted square-pyramidal coordination geometry. In the crystal, classical O-H⋯O hydrogen bonds, weak C-H⋯O hydrogen-bonding inter-actions and π-π stacking inter-actions link the complex cations, anions and solvent water mol-ecules into a three-dimensional supra-molecular architecture. In the crystal, the di-methyl-amino-propyl unit of the oxamide anion is disordered over two positions with an occupancy ratio of 0.561 (11):0.439 (11); the solvent water mol-ecule is also disordered over two positions, the occupancy ratio being 0.207 (10):0.293 (10).
authors.affiliation: Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China.
authors.forename: Yan-Tuan
authors.initials: YT
authors.lastname: Li
authors.affiliation: Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China.
authors.forename: Zhi-Yong
authors.initials: ZY
authors.lastname: Wu
keywords: 1,10-phenanthroline-5,6-dione; binuclear copper(II) complex; crystal structure; hydrogen bonding; oxamide complex; π–π stacking