Abstract
Monometallated derivatives of thiouracil (H 2Tu) and 2- S-methylthiouracil (HTuSMe), (R n MHTu and R n MTuSMe, R = Me or Ph, M = Hg or Tl) and dimetallated derivatives of 2-thiouracil [(RHg) 2Tu] (R = Me or Ph) have been prepared. The structure of MeHgTuSMe was determined by X-ray diffraction. The crystal was found to consist of MeHgTuSMe units, with the mercury atom bonded to nitrogen N(3) of the 2-thiouracil ring. Weak intra- and inter-molecular interactions between the metal atoms and the carbonyl group or the N(1) atom were also observed. Possible structures for the other compounds isolated are discussed on the basis of their IR, Raman and NMR ( 1H, 13C and 199Hg) spectra.
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