-4,5-DIHYDRO-1H-1,2,4-TRIAZOLE-5-THIONE)NICKEL(II) NITRATE - A SULFUR-NITROGEN CHELATE

The title compound, [Ni(C3H6N4S)(2)(H2O)(2)](NO3)(2), is an octahedral complex of nickel(II) in which two triazole ligands are coordinated i n a bidentate fashion through the amine and thione substituents. The c oordination sphere has the two S atoms trans with respect to each othe r, while the N atoms and two water molecules are ligated in cis positi ons. The Ni--S and Ni--N bond lengths in the chelate are consistent wi th those in similar octahedral nickel complexes. The geometry of the c omplexed triazole moiety is not substantially different from that of t he free molecule.