Metallo-ligands containing terminal oxygen donors bonded to a manganese–carbonyl moiety

Abstract

The reactions of [Mn(CO)₅Br] with [M(salen)][M = Co, Cu, Zn, Pd, Ni, or Sn; salen =N,N′-ethylenebis(salicylideneiminate)], [Co(salphen)][salphen =N,N′-o-phenylenebis(salicylideneiminate)], or [Co(salchd)][salchd =N,N′-cyclohexane-1,2-diylbis(salicylideneiminate)] in a variety of solvents resulted in the substitution products having the general formula [(ML)Mn(CO)₃Br](L = salen, salphen, or salchd). The reaction of 4-ethyl-5-methyl-3,6-diazaocta-3,5-diene-1,8-dithiolatonickel(II), [NiL′], with [Mn(CO)₅Br] resulted in the substitution product [(NiL′)Mn(CO)₃Br]. These complexes were characterized by i.r. and electronic spectra and magnetic and cyclic voltammetry measurements. Chemical and physical data indicate that the metallo-ligand moieties of these bimetallic complexes bond weakly to the Mn(CO)₃Br moiety.