Crystal Structure of Hexakis(thiourea)-Bis((μ-Perchlorato-O,O')-(Perchlorato-O)-Bismuth) Diperchlorate

摘要

The complex[Bi2(Tu)6(ClO4)4](ClO4)2 (I) (Tu is thiourea) was synthesized and studied by X-ray diffraction. The crystallographic data of I are: a = 14.205(1) A, b = 13.083(1) A, c = 22.078(2) A, p = 96.182(1)°, V= 4079.1(7) A3, space group Cl/c, Z= 4. The molecule is located on a twofold axis and consists of the binuclear cation [Bi2(Tu)6(ClO4)4]~(2+) and two outer-sphere anions ClO4. The Bi-S bond lengths are 2.61—2.62 A. For each terminal and bridging ClO4 ion, one Bi—O distance varies from 2.744 to 3.048 A and the other distance is longer (3.167 or 3.269 A) and is considered as a shortened contact. The structure contains a hydrogen bond network involving all hydrogen atoms. The IR and Raman spectroscopy data confirm the thiourea coordination by the sulfur atom.