Abstract
The neutral complex [HgPh(dmpymt)] 1 (dmpymtH = 4,6-dimethylpyrimidine-2(1H)-thione) reacts with HBF 4 to give the cationic complex [HgPh(dmpymtH)][BF 4] 2. The X-ray molecular structure of the later revealed a [2+1] coordination sphere about the mercury(II) atom (C−Hg−S and Hg⋯N). In the dinuclear complex [(HgPh) 2(μ-dtu)] 3 [dtuH 2 = 2,4(1H,3H)-pyrimidinedithione or dithiouracil] the coordination spheres are also [2+1] although dissimilar regarding the Hg⋯N secondary bonds. NMR spectroscopy ( 1H, 13C and 199Hg) studies were undertaken in solution and the results discussed in the light of the X-ray structures.
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