Original scientific paper

Structural Investigation of Di-μ-chloro-bis[saccharinatopyridinemercury(II)] by X-ray Diffraction and FT IR Spectroscopy

Orhideja Grupče ; Institute of Chemistry, Faculty of Sciences, »Sv. Kiril i Metodij« University, 91001 Skopje, P. O. Box 162, Macedonia
Gligor Jovanovski ; Institute of Chemistry, Faculty of Sciences, »Sv. Kiril i Metodij« University, 91001 Skopje, P. O. Box 162, Macedonia
Branko Kaitner ; Chemistry Department, Laboratory of General and Inorganic Chemistry, Faculty of Science, University of Zagreb, HR-10000 Zagreb, Ul. kralja Zvonimira 8, Croatia
Panče Naumov ; Institute of Chemistry, Faculty of Sciences, »Sv. Kiril i Metodij« University, 91001 Skopje, P. O. Box 162, Macedonia

Abstract

The solid state structure of C12H9ClHgN2O3S2 was determined and the appropriate assignment of the CO and SO2 stretching vibrations in the FT IR spectrum was made. Two monomeric chlorosaccharinatopyridinemercury(II) moieties are joined together forming a di-chloro bridged dimmer by an inversion centre operation. The mercury atom is coordinated with two bridging chlorine and the pyridine and saccharinato nitrogen atoms in the shape of a heavily distorted tetrahedron. There is a significant difference between Hg1–Cl1 2.533(2) Å and Hg1–Cl1i 2.715(2) Å distances as well as between Hg1–N11 2.106(7) Å and Hg1–N21 2.209(7) Å bond lengths. The valence bond angles at the metal atom deviate significantly from the standard tetrahedral value, ranging from 86.23(7)° for Cl1–Hg1–Cl1i to 131.5(3)° for N11–Hg1–N21. Discrete molecules are linked together by weak intermolecular C–H⋅⋅⋅O attractions at distances less than 3.5 Å.

Keywords

chloromercury(II) saccharinate; pyridine adduct; X-ray structure determination; FT IR spectroscopy

Hrčak ID:

132227

URI

https://hrcak.srce.hr/132227

Publication date:

1.9.1999.

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