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Updated: May 31, 2026

A Study of the Complexation of Mercury(II) with Dicysteinyl Tetrapeptides by Electrospray Ionization Mass Spectrometry
Published on: January 8, 2016
(4,5-Diaza-fluoren-9-one-κN,N')bis-(thio-cyanato-κS)mercury(II)
Behrouz Notash1, Nasser Safari, Vahid Amani
1Department of Chemistry, Shahid Beheshti University, G. C., Evin, Tehran 1983963113, Iran.
Abstract:
In the title compound, [Hg(NCS)(2)(C(11)H(6)N(2)O)], the Hg(II) atom, lying on a twofold rotation axis, is four-coordinated in a distorted tetra-hedral geometry by an N,N'-bidentate diaza-fluoren-9-one ligand and two thio-cyanate anions. In the crystal, inter-molecular C-H⋯N and C-H⋯O hydrogen bonds are effective in the stabilization of the structure.
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Structural Isomerism
Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...

