New metal–sulphur–nitrogen compounds from reactions in liquid ammonia. The X-ray structures of trans-bis(acetophenone dimethylhydrazone-Nα)dichloropalladium(II) and [di(azathien)-1-yl-S1N4][2-(hydrazonoethyl)phenyl]palladium(II)

Abstract

Reaction of [S₄N₃]Cl or [S₃N₂Cl]Cl in liquid ammonia with [PtCl₂(PR₃)₂] or [(L–L′)PdCl₂Pd(L–L′)](L–L′= C–N ligand) gives [Pt(S₂N₂)(PR₃)₂] and [Pd(S₂N₂H)(L–L′)] respectively; in some cases complexes containing S₃N^– ligands were also obtained. An alternative route to [Pd(S₃N)(L–L′)] complexes using [HgPh(S₇N)] is also reported. Reaction of S₈–NH₃(I) solutions with [PtCl₂(PR₃)₂] gives [PtS₄(PR₃)₂]. The new complexes were characterised by microanalyses, i.r., n.m.r., and mass spectroscopy, and X-ray crystallography.