ABSTRACT
The cyano-bridged heteronuclear coordination polymer poly[tris[(5,12-dimethyl-7,14-diphenyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene)copper(II)]-hexa-mu-cyano-bis[tricyanocobalt(III)] dimethylformamide solvate trihydrate], {[Cu3Co2(CN)12(C24H32N4)3].C3H7NO.3H2O}n, was synthesized by the assembly reaction of [CuL]2+ (L is 5,12-dimethyl-7,14-diphenyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene) and [Co(CN)6]3- in a dimethylformamide-water solution. The structure consists of neutral cyano-bridged Cu3Co2 units with the unique Co atom in a general position and all three Cu atoms on independent inversion centres. Each [Co(CN)6]3- ion connects three CuII ions via three cyano groups to form a novel cyano-bridged two-dimensional stair-shaped-layer structure. The water and dimethylformamide molecules are situated in the inter-fragment spaces.
ABSTRACT
The title compound, [Cu2(C6)H12N4O2)(ClO4)2(C11H6N2O)2].-2C11H6N2O, contains a dinuclear copper(II) complex which lies about a twofold axis at the mid-point of the C-C bond of the oxamide ligand that bridges the two Cu(II) atoms. The Cu...Cu distance is 5.215 (2) A and the Cu atoms have distorted octahedral coordination geometry. Intramolecular N-H...O and N-H...N hydrogen bonds and intermolecular C-H...O hydrogen bonds, together with pi-pi stacking interactions, dominate throughout the crystal structure.
