RATIONALIZATION OF THE METAL-LIGAND BONDING IN ORGANOTIN(IV) COMPLEXES OF ANIONIC NITROGEN HETEROCYCLES CONTAINING A THIOKETO EXOCYCLIC GROUP - THE CASE OF 1-ORGANYL-1H-TETRAZOLE-5-THIONES

摘要

A systematic crystallographic study of organotin(IV) complexes of the 1-phenyl-1H-tetrazole-5-thiolato heterocycle (L), has been undertaken in order to examine the metal-ligand bonding behaviour. The structural evidence accumulated from several X-ray determinations of complexes of the-type SnR3L and SnR2L2 performed mainly by us, as well as that of dimethylbis(1-phenyl-1H-tetrazole-5-thiolate)tin(IV), SnMe2L2, presented in this manuscript (the first reported with a heterocyclic ligand containing the N---C-...--S-... unit and two non-bulky organic groups), has led us to propose a rationalization:of the solid-state bonding behaviour of organotin(IV) derivatives toward tetrazolethiolates and closely related ligands. (C) 1997 Elsevier Science Ltd. [References: 68]