Crystallographic coincidence of two bridging species in a dinuclear Co III ethynyl-benzene complex

Abstract

In the title compound, trans,trans-[-(m-phenyl-ene)bis-(ethyne-1,2-di-yl)] bis-[chlorido(1,4,8,11-tetra-aza-cyclo-tetra-deca-ne)cobalt(III)]-trans, trans-[-(5-bromo-m-phenyl-ene)bis-(ethyne-1,2-di-yl)]bis-[chlorido(1,4,8, 11-tetra-aza-cyclo-tetra-deca-ne)cobalt(III)]-tetra-phenyl-borate-acetone (0.88/0.12/2/4), [Co 2(C 12H 4)C l2(C 10H 24N 4) 2]0.88[Co 2(C 10H 3Br)C l2(C10H24N4) 2]0.12(C 24H 20B) 2· 4C 3H 6O, with the exception of the acetyl-ene and bromine groups, all atomic postitions are the same in the two compounds and are modeled at full occupancy. The Co III ions are six-coordinate with acetyl-ide and chloride ligands bound to the axial sites and the N atoms from the cyclam rings coordinated at the equatorial positions. N - H⋯O and N - H⋯Cl hydrogen-bonding interactions help to consolidate the crystal packing. © Hoffert and Shores 2011.