The reaction between (2-hydroxybenzyl)(2-pyridylmethyl) amine (Hbpa) and Zn(OAc)2.2H2O (2:1) in a methanolic medium gave colorless crystals of [Zn(bpa)2].2H2O. The crystal structure of the complex was determined by X-ray diffraction in the triclinic crystal system, space group P <img width=32 height=32 src="../../../../../../img/revistas/jbchs/v8n3/a15img01.gif" align=absmiddle>(No. 2), and cell dimensions a = 9.504(1), b = 11.984(1), c = 11.966(1) Å, a = 79.36(2), b = 89.18(2), g = 78.95(2)o , V = 1314.2(2) Å3, Z = 2, Dcalc = 1.334 Mg m-3, l(MoKa) = 0.71073 Å, m = 0.991 mm-1, F(000) = 552, T = 296 K, and R = 7.1% (Rw = 11.0%), with 4846 measured reflections and 3247 observed reflections with I > 3s(I) and 326 refined parameters. The coordination environment around the Zn(II) ion is pseudo-octahedral, with the tripodal units of bpa- coordinated in a facial arrangement. To the best of our knowledge, [Zn(bpa)2].2H2O is the first structural example of an octahedral Zn2+ complex which contains phenolate in its coordination sphere.
mononuclear zinc(II) complex; X-ray analysis; [Zn(bpa)2].2H2O
