COMPLEXES DERIVED FROM 4-AMINO-3-METHYL-5-THIONE-1,2,4-TRIAZOLE AND MONOORGANOMERCURY MOIETIES - CRYSTAL-STRUCTURE OF RCAPTO-3-METHYL-1,2,4-TRIAZOLATO)METHYLMERCURY(II)

The compounds [HgR(L)] (R = Me or Ph; L = 4-amino-5-mercapto-3-methyl- 1,2,4-triazolate) have been prepared and the crystal structure of the methylmercury(II) compound determined. This compound crystallizes in t he monoclinic space group P2(1)/n with a = 5.087(1), b = 10.102(1), c = 16.167(2) angstrom, beta = 98.56(1)-degrees, Z = 4 (R = 0.027; R(w) = 0.030). It is formed of molecules in which the triazolate anion is b ound to mercury strongly via the S atom and weakly via the amine N; th ere is also a weak intermolecular interaction between the endocyclic N and the Hg atom of a neighbouring unit.