Synthesis and Crystal Structure of Mercury(II) Bromide-Ferron (7-iodo-8-hydroxyquinoline-5-sulfonic acid) Adduct Monohydrate

Abstract

The title compound was prepared by reacting mercuric(II) bromide and ferron (7-iodo-8-hydroxyquinoline-5-sulfonic acid), [C9H6INO4S·H2O, 0.5(Br2HgO)] in water. It crystallizes in the monoclinic C2/c space group. The unit-cell parameters are a = 25.916(3), b = 7.117(3) c = 17.567(3)A, β = 119.47(3)°. The final R value is 0.0361 for 3066 measured reflections. Mercury is present in a distorted T-shaped geometry with two short Hg-Br bonds (Hg-Br 2.414(13)A) and one long Hg-O (water) bond (Hg-O2W 2.701(9)A). The crystal structure is stabilized by C-H…O, O-H…O, N-H…O and O-H…I hydrogen bonds.