Synthesis and spectroscopic properties of heteropolynuclear cyano-bridged complexes
摘要:
The heteropolynuclear cyano-bridged complexes [(C(5)H(5))Fe(CO)(CNMLn)(CNM'L'n)], {MLn = M'L'n = (C(5)H(5))Fe(CO)(2) or W(CO)(5); MLn = (C(5)H(5))Fe(CO)(2), M'L'n = W(CO)(5)} and mixed isocyanide complexes [(C(5)H(5))Fe(CO)(CNMLn)(CNR)], {MLn = W(CO)(5), R = CPh(3); MLn = (C(5)H(5))Fe(CO)(2), R = CH(3)} have been obtained by metallation or alkylation of the two terminal CN ligands of K[(C(5)H(5))Fe(CO)(CN)(2)]. Comparison of the bonding properties of the CNMLn and CNR ligands, based upon their relevant spectroscopic data, are discussed. Furthermore, two new isomeric heterobinuclear cyano-bridged complexes of the form [(C(5)H(5))(CO)(2)FeCNW(CO)(5)] and [(C(5)H(5))(CO)(2)FeNCW(CO)(5)] have been synthesized and fully characterized by spectroscopic techniques. Finally the reactions with nucleophiles of the last two compounds have been also examined. (C) 1997 Elsevier Science S.A.
Synthesis and spectroscopic properties of heteropolynuclear cyano-bridged complexes
摘要:
The heteropolynuclear cyano-bridged complexes [(C(5)H(5))Fe(CO)(CNMLn)(CNM'L'n)], {MLn = M'L'n = (C(5)H(5))Fe(CO)(2) or W(CO)(5); MLn = (C(5)H(5))Fe(CO)(2), M'L'n = W(CO)(5)} and mixed isocyanide complexes [(C(5)H(5))Fe(CO)(CNMLn)(CNR)], {MLn = W(CO)(5), R = CPh(3); MLn = (C(5)H(5))Fe(CO)(2), R = CH(3)} have been obtained by metallation or alkylation of the two terminal CN ligands of K[(C(5)H(5))Fe(CO)(CN)(2)]. Comparison of the bonding properties of the CNMLn and CNR ligands, based upon their relevant spectroscopic data, are discussed. Furthermore, two new isomeric heterobinuclear cyano-bridged complexes of the form [(C(5)H(5))(CO)(2)FeCNW(CO)(5)] and [(C(5)H(5))(CO)(2)FeNCW(CO)(5)] have been synthesized and fully characterized by spectroscopic techniques. Finally the reactions with nucleophiles of the last two compounds have been also examined. (C) 1997 Elsevier Science S.A.