THE STRUCTURE OF ,2-DITHIOLATO[2-]-S,S')BIS(3-AMINOPYRAZOLE)TIN(IV)

The 1:2 adduct of bis(ethane-1,2-dithiolato)tin(IV) with 3-aminopyrazo le, [Sn(C2H4S2)2(C3H5N3)2], Crystallizes in the monoclinic C2/c space group, with Z=4, a=13.122(2), b = 11.216(2), c = 11.810(2) angstrom an d beta = 98.47(2)-degrees. The structure determination, based on 2127 independent reflections, has been refined to R = 2.42%. The molecules are discrete, monomeric, trans-octahedral units, with the tin atom at the centre of symmetry, planar aminopyrazole groups and SnS2C2 groups in twist-envelope form. The aminopyrazole ligands act as monodentate a nd are bonded through the N(2) atoms. No significant intermolecular co ntacts and S...H-N hydrogen bonds are observed.