Da. Bardwell et al., THE CRYSTAL-STRUCTURE OF [CU(PH(2)BIPY)(2)][BF4]CENTER-DOT-CH2CL2 (PH(2)BIPY=6,6'-DIPHENYL-2,2'-BIPYRIDINE), Polyhedron, 15(2), 1996, pp. 191-194
The crystal structure, of the title compound has been determined. The
normal four-coordinate geometry of [Cu(NN)(2)](+) cations (where NN de
notes an alpha,alpha'-diimine chelate) is highly distorted, with a wid
e spread of bond lengths and angles, due to the presence of one strong
intramolecular pi-stacking, interaction between a phenyl ring of one
ligand and the coordinated bipyridyl fragment of the other.