Synthesis and structure of a penta- and hexa-coordinated tri-nuclear cobalt(II) complex

Abstract

The tri-nuclear cobalt(II) complex, [(CoL)2(μ-OAc) 2Co]·2CHCl3 (H2L = 5,5'-dimethoxy-2,2'- [(ethylene)dioxybis(nitrilome thylidyne)]diphenol), has been synthesised. Its X-ray structure shows it to contain two acetate ions coordinating to the three cobalt(II) atoms through Co-O-C-O-Co bridges, and four μ-phenoxo-oxygen atoms from two [CoL] chelates also coordinating to the central cobalt(II) atom. The complex possesses two penta- and one hexa-coordinated cobalt atoms. The crystal packing of the CoII complex shows that a 2D-layer supramolecular network parallel to the ab-plane is formed through intermolecular C-H...O and C-H...Cl hydrogen bonding interactions.