Nuclear magnetic resonance spectra of complexes of platinum(II), palladiurn(II), platinum(IV), rhodium(III), and iridium(III) containing three or four trimethylphosphine ligands

Abstract

The ¹H n.m.r. spectra of [MX(PMe₃)₃][NO₃](M = Pd or Pt), mer-[PtX₃(PMe₃)₃][NO₃], mer- and fac-MX₃(PMe₃)₃, trans-[MX₂(PMe₃)₄]⁺(M = Rh or Ir, X = Cl or Br), [Ptl(PMe₃)₃][NO₃], and [Pt(PMe₃)₄][BF₄]₂ are reported and discussed, together with data from ¹H{³¹P} INDOR measurements. The signs of several of the couplings have been determined by heteronuclear double resonance. A partial analysis is presented for the spectra of the [AX_n]₄(planar) systems.