Synthesis, properties, and 77Se nuclear magnetic resonance studies of platinum metal complexes of two isomeric tris(selenoethers), MeC(CH2SeMe)3 and Se(CH2CH2CH2SeMe)2

Abstract

The synthesis and properties of platinum metal complexes of MeC(CH₂SeMe)₃(tmse) and (MeSeCH₂CH₂CH₂)₂Se (bmsp), including diamagnetic [M(tmse)Cl₂](M = Pd or Pt), [M′(tmse)Cl₃](M′= Rh or Ir), [Pd(bmsp)Cl₂], [Pt(bmsp)Cl]PF₆, and [M′(bmsp)Cl₃] are described. Paramagnetic [RuLCl₃], [OsLCl₄], and [OsLCl₃](L = tmse or bmsp) are also reported. The complexes were characterised by i.r., electronic, and ¹H n.m.r. spectroscopy or magnetic measurements as appropriate. For the diamagnetic complexes, ⁷⁷Se and ¹⁹⁵Pt n.m.r. spectroscopy have been used to identify the major invertomers present. Complexes of the trithioether analogues are briefly described.