Abstract
Reactions of 5-methoxy-5,6-diphenyl-4,5-dihydro-2H-[1,2,4]triazine-3-thione LH 2OCH 3 with Hg(NO 3) 2 · H 2O and HgMeCl afforded monomeric compounds in which the triazine loses the methoxy group and binds to the mercury through the sulphur atom, acting as monodentate. The coordination number found around the metal ion in both complexes is two, giving a linear disposition. This coordination mode is different from the ones that have been previously reported, where the ligand acts as bidentate NS or bidentate NS bridging via the sulphur atom, and unusual behaviour for a triazine ligand. Complexes have been characterised by mass spectrometry, IR, multinuclear ( 1H, 13C) NMR, and X-ray diffraction. The redox behaviour was explored by cyclic voltammetry and both complexes show Hg(II)/Hg(I) processes.
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