TY - JOUR
T1 - Complexes of niobium(V) and tantalum(V) with phosphorus and arsenic ligands
AU - Jamieson, G.
AU - Lindsell, W. E.
PY - 1978
Y1 - 1978
N2 - Complexation reactions between [M2Cl10] (M = Nb, Ta) and some phosphine, phosphite and arsine ligands have been investigated. Complexes [MCl5L2] {M = Nb, L2 = (PMe2Ph)2, (P(OPh)3)2, (dmpe)2 dppe and dpae; M = Ta, L2 = (PMe2Ph)2, dmpe, dppe and dpae} have been isolated and characterised by analysis, IR and 1H NMR spectroscopy and, in three cases, by 31P NMR spectroscopy. Reactions of other phosphines (PMePh2, PPh3) and phosphites {P(OEt)3, P(OPh)3} with [M2Cl10] have also been studied. The nature of the phosphorus complexes appears to be sterically controlled and depends on the cone angles of the ligands. Products [M(C6F5)xCl5-x] (x = 2-3, M = Nb, Ta) are formed by [M2Cl10] and pentafluorophenyllithium and these have been investigated by analysis, IR and 19F NMR spectroscopy. A ditertiary arsine adduct, [Nb(C6F5)2Cl3(dpae)], has also been isolated and characterised. © 1978.
AB - Complexation reactions between [M2Cl10] (M = Nb, Ta) and some phosphine, phosphite and arsine ligands have been investigated. Complexes [MCl5L2] {M = Nb, L2 = (PMe2Ph)2, (P(OPh)3)2, (dmpe)2 dppe and dpae; M = Ta, L2 = (PMe2Ph)2, dmpe, dppe and dpae} have been isolated and characterised by analysis, IR and 1H NMR spectroscopy and, in three cases, by 31P NMR spectroscopy. Reactions of other phosphines (PMePh2, PPh3) and phosphites {P(OEt)3, P(OPh)3} with [M2Cl10] have also been studied. The nature of the phosphorus complexes appears to be sterically controlled and depends on the cone angles of the ligands. Products [M(C6F5)xCl5-x] (x = 2-3, M = Nb, Ta) are formed by [M2Cl10] and pentafluorophenyllithium and these have been investigated by analysis, IR and 19F NMR spectroscopy. A ditertiary arsine adduct, [Nb(C6F5)2Cl3(dpae)], has also been isolated and characterised. © 1978.
UR - http://www.scopus.com/inward/record.url?scp=3643067549&partnerID=8YFLogxK
M3 - Article
SN - 0020-1693
VL - 28
SP - 113
EP - 118
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
IS - C
ER -