NEW COPPER(I) HALIDE-COMPLEXES WITH 2,2'-DIPYRIDYLAMINE AND PRODUCTS OF THEIR AUTOXIDATION - X-RAY-DIFFRACTION STRUCTURE OF A TRIPLY-BRIDGED MU-CL-MU-(OME)(2)-DICOPPER(II) COMPLEX

Some new complexes of Cu(I)X (X = Cl, Br, I) with 2,2'-dipyridylamine (dipyam) have been prepared and their autoxidation in methanol has bee n investigated. The products were characterized by elemental analysis and IR spectroscopy. The X-ray diffraction structure of the [Cu-2(mu-O Me)(2)(mu-Cl)dipyam(2)]Cl . MeOH (10) complex is reported. Crystals of 10 are orthorhombic, space group Cmc2(1), with a = 14.993(5), b = 8.1 91(4), c = 21.237(6) Angstrom, Z = 4, and R = 0.052 for 1482 observed independent reflections. In the dinuclear monocations the triply-bridg ed Cu(II) ions show a distorted square-pyramidal coordination with fou r short in-plane bonds involving two N atoms from a terminal dipyam li gand and two O atoms from two bridging methoxy groups. The fifth apica l ligand is a longer bonded bridging chloride ion, which joins the bas al CuN2O2 planes in a roof-top configuration.