COMPLEXES OF 4,5-DIAZAFLUORENE AND 9,9'-BIS(4,5-DIAZAFLUORENYL) WITH NICKEL(II), COPPER(II) AND ZINC(II)

Complexes having the compositions [LMCl2], [L2MCl2], [L2Cu][PF6], [L ' MCl2] and [L ' (MCl2)(2)] of 4,5-diazafluorene, L, and 9,9 ' -bis(4,5-diazafluorenyl), L ', have been prepared from MCl2 (M=Ni, Cu, Zn) and characterised. Steric strain or the bite angle of the pro-ligand has no recognisable effect on its coordination chemistry with smaller 3d-metals.