Synthesis, characterization and structural study of mercury(II) complexes with fluoroalkylthiocarbamates

• New O-perfluoroalkyl thiocarbamate mercury complexes were synthesized.
• The X-ray structure shows S-Hg ligand-metal coordination.
• The N- and S-substituents effect on the complex stability is studied.

Ten new mercury (II) complexes (1–10) were synthesized from the reaction of mercury (II) chloride with O-F-alkylated thiocarbamates. These compounds were fully characterized by multinuclear (1H, 19F, 13C and 199Hg) NMR and IR spectroscopic techniques, HRMS and in one case (complex 3) by X-ray crystallography. The absence of NH proton (1H) and CS (13C) NMR signals as well as the presence of CN (13C) and S-Hg (199Hg) NMR signals for complexes 1–10 suggest that the thiocarbamate ligand is coordinated to the mercury center through its sulfur atom. This was further confirmed by X-ray crystallographic data obtained for complex 3.

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