Structural investigation of di-mu-chloro-bis[saccharinatopyridinemercury(II)] by X-ray diffraction and FT IR spectroscopy

Citation
O. Grupce et al., Structural investigation of di-mu-chloro-bis[saccharinatopyridinemercury(II)] by X-ray diffraction and FT IR spectroscopy, CROAT CHEM, 72(2-3), 1999, pp. 465-476
Citations number
35
Categorie Soggetti
Chemistry
Journal title
CROATICA CHEMICA ACTA
ISSN journal
00111643 → ACNP
Volume
72
Issue
2-3
Year of publication
1999
Pages
465 - 476
Database
ISI
SICI code
0011-1643(199909)72:2-3<465:SIOD>2.0.ZU;2-8
Abstract
The solid state structure of [C12H9ClHgN2O3S](2) Was determined and the app ropriate assignment of the CO and SO2 stretching vibrations in the FT IR sp ectrum was made. Two monomeric chlorosaccharinatopyridinemercury(II) moieti es are joined together forming a di-mu-chloro bridged dimmer by an inversio n centre operation. The mercury atom is coordinated with two bridging chlor ine and the pyridine and saccharinato nitrogen atoms in the shape of a heav ily distorted tetrahedron. There is a significant difference between Hg1-Cl 1 [2.533(2) Angstrom] and Hg1-Cl1(i) [2.715(2) Angstrom] distances as well as between Hg1-N11 [2.106(7) Angstrom] and Hg1-N21 [2.209(7) Angstrom] bond lengths. The valence bond angles at the metal atom deviate significantly f rom the standard tetrahedral value, ranging from 86.23(7)degrees for Cl1-Hg 1-Cl1(i) to 131.5(3)degrees for N11-Hg1-N21. Discrete molecules are linked together by weak intermolecular C-H...O attractions at distances less than 3.5 Angstrom.