STRUCTURE OF DICHLOROETHANOLAMINECOPPER(II) AND DIBROMOETHANOLAMINECOPPER(II)

CuCl2(NH2CH2CH2OH) is monoclinic, space group C2/c, with a = 11.092(2) , b = 10.012(2), c = 6.401(1) angstrom, beta = 121.71(1)degrees, and V = 604.8(2)angstrom3 with Z = 4. The structure was refined to a final value of R = 0.27 for 518 unique observed reflections with Absolute va lue of F > 3sigma. The ethanolamine and halide ions coordinate to the copper(II) ion forming a pseudoplanar four-coordinate monomeric CuCl2L 2 complex (L2 = bidentate ligand). The copper ion also interacts with the halides of neighboring complexes through the formation of semi-coo rdinate Cu-Cl linkages (2.926(1)angstrom) between oligomers. The coppe r thus attains a 4 + 2 elongated octahedral coordination geometry. In this space group, the ligand is statistically disordered. The Cu-Cl di stance is 2.267(1)angstrom while the Cu-N/O distances are 2.025(2)angs trom. The dibromide structure is isomorphous with the dichloride struc ture, with space group C2/c, and a = 11.285(2), b = 10.218(2), c = 6.7 15(1)angstrom, beta = 121.65(1)degrees, and V = 659.2(2)angstrom3.