Multidentate chelating agents derived from Quinoline-8-aldehyde. II. Stereochemistry of complexes of a tridentate and a sexadentate ligand

Abstract

Complexes of the sexadentate chelating agent, 1,8-bis(8- quinolylmethyleneimino)-3,6-diazaoctane with iron(II), cobalt(III), and nickel(II) are described. The mode of coordination of this base is such that its complexes must be very closely related structurally to octahedral complexes of 1-amino-2-(8-quinolylmethyleneimino)ethane, and the similarities in the properties of corresponding complexes of both bases reflect this relationship. The resolution of the cobalt(III) complexes of both bases into their stable enantiomorphous forms is described.