Co-ordination chemistry of higher oxidation states. Part 29. Cobalt(III) complexes of bi- and tetra-thioethers: synthesis, properties, and cobalt-59 nuclear magnetic resonance data
Abstract
Open-chain tetrathioether complexes of cobalt(III)[CoLX2] BPh4[L = MeS(CH2)nS(CH2)mS(CH2)nSMe, n=m= 2; n= 3, m= 2; X = Cl, Br, or I] and unstable [Co(MeSCH2CH2SMe)2X2]BPh4(X = Cl or Br) are formed by air oxidation of CoX2 and the ligand in nitromethane. The CoS63+ complex [CoL1(MeSCH2CH2SMe)][BF4]3[L1= [graphic omitted]H2)3] is also described. Cobalt-59 n.m.r. data for these and [CoL1X2]+ are reported and discussed.