Two coordination modes of CuII in a binuclear complex with N-(pyridin-2-yl-carbonyl)pyridine-2-carboxamidate ligands

Abstract

In the title dinuclear complex, (acetonitrile-1kN)[μ-N-(pyridin-2- ylcarbonyl)pyridine-2-carboxamidato-1:2k5N,N′,N″:-O, O′][N-(pyridin-2-ylcarbonyl)pyridine-2-carboxamidato-2/k 3N,N′,N″]bis(trifluoromethanesulfonato-1kO)dicopper(II), [Cu2(C12H8N3O2) 2(CF3O3S)2(CH3CN)], one of the CuII ions is five-coordinated in a distorted square-pyramidal N3O2 environment provided by two N-(pyridin-2-ylcarbonyl)- pyridine-2-carboxamidate (bpca) ligands, while the second CuII ion is six-coordinated in a distorted octahedral N4O2 environment provided by one bpca ligand, two trifluoro-methansulfonate ligands and one acetonitrile molecule. Weak intermolecular C - H··· O and C - H···F hydrogen bonds and π-π stacking interactions with centroid-centroid distances of 3.6799 (15) and 3.8520 (16) Å stabilize the crystal packing and lead to a three-dimensional network.