Dj. Xu et al., SYNTHESIS AND CRYSTAL-STRUCTURE OF A POLYHETERONUCLEAR COMPLEX, [CO(III)(HDMG)(2)(NH3)(2)CU(II)CL-3], Polyhedron, 17(2-3), 1998, pp. 231-233
The title complex has been prepared by the reaction of [Co(Hdmg)(2)(NH
3)(2)]Cl with CuCl2 in HCl solution (where Hdmg = dimethylglyoxime mon
oanion) and its crystal structure has been determined by Xray diffract
ion. The Co(III) and Cu(II) atoms lie on different two-fold axes. The
coordination geometries around the Co(III) and Cu(II) atoms are octahe
dral and distorted trigonal bipyramidal, respectively. The Hdmg chelat
es Co(III) and bridges to the Cu(II) atoms to form a polyheteronuclear
helical structure along the c axis. Based on the structure the IR spe
ctrum of the complex is discussed. (C) 1997 Elsevier Science Ltd.