STRUCTURES OF PALLADIUM(II) AND NICKEL(II) COMPLEXES OF THE MESOCYCLIC DIPHOSPHINE, CIS-1,5-DIPHENYL-1,5-DIPHOSPHACYCLOOCTANE

The preparation and X-ray crystal structures of a planar mono complex of cis-1,5-diphenyl-1,5-diphosphacyclooctane with palladium(II) chloride and a pentacoordinated bis complex with nickel(II) chloride are reported. Dichloro(1,5-diphenyl-1,5-diphosphacyclooctane)palladium(II) crystallizes in the monoclinic space group C2/c with cell constants a = 26.647(6), b = 7.884(1), c = 13,053(3) angstrom, beta = 98.15(2)-degrees and Z = 4 at T = 130 K. Chloro-bis(1,5-diphenyl-1,5-diphosphacyclooctane)nickel(II) chloride crystallizes in the monoclinic space group P2(1)/n with a = 18.178(7), b = 10.225(2), c = 20.959(7) angstrom, beta = 111.77(2)-degrees and Z = 4 at T = 130 K.