TY - JOUR
T1 - Towards cationic gallium derivatives
T2 - Metallacycles from the reactions of organogallium compounds with tetraorganodichalcogenoimidodiphosphinates and a new N-(diphenylthiophosphinyl)thioureato ligand
AU - Montiel-Palma, Virginia
AU - Huitrón-Rattinger, Estefanía
AU - Cortés-Llamas, Sara
AU - Muñoz-Hernández, Miguel Angel
AU - García-Montalvo, Verónica
AU - López-Honorato, Eddie
AU - Silvestru, Cristian
PY - 2004/9/20
Y1 - 2004/9/20
N2 - The organometallic complexes of general formulae [Me2Ga{η 2-E,E′-[R2P(E)NP(E′)R′2]}] [R = R′ = Ph, E = E′ = O (1); R = R′ = Ph, E = E′ = S (2); R = R′ = Ph, E = E′ = Se (3); R = R′ = Ph, E = O, E′ = S (4); R = Me, R′ = Ph, E = S, E′ = O (5)] and [Me 2Ga{η2-S,S′-[Ph2P(S)NC(S)(C 9H10N)]}] (6) were obtained by facile methane elimination reactions from GaMe3 and the acidic ligands L1H [(XPPh2)2NH (X = O, S, Se)1 (OPPh2)(SPPh 2)NH, and (OPMe2)(SPPh2)NH] and L2H [Ph2P(S)NHC(S)(C9H10N)] in toluene. Replacement of one phosphorus atom by a carbon atom in the ligand skeleton of L 1H gave the new ligand L2H, which, upon reaction with GaMe3, gave compound 6, which shows no significant structural differences with respect to 1-5. Therefore, L2H does not induce partial planarity in the six-membered ring, indicating the necessity for replacing both phosphorus atoms of the ligand by carbon atoms, as in the β-diketonate-type derivatives, in order to impose ring planarity. Thus, despite originating from a variety of ligands with differing donor atoms and substituents at the phosphorus atoms, all complexes show little structural differences.
AB - The organometallic complexes of general formulae [Me2Ga{η 2-E,E′-[R2P(E)NP(E′)R′2]}] [R = R′ = Ph, E = E′ = O (1); R = R′ = Ph, E = E′ = S (2); R = R′ = Ph, E = E′ = Se (3); R = R′ = Ph, E = O, E′ = S (4); R = Me, R′ = Ph, E = S, E′ = O (5)] and [Me 2Ga{η2-S,S′-[Ph2P(S)NC(S)(C 9H10N)]}] (6) were obtained by facile methane elimination reactions from GaMe3 and the acidic ligands L1H [(XPPh2)2NH (X = O, S, Se)1 (OPPh2)(SPPh 2)NH, and (OPMe2)(SPPh2)NH] and L2H [Ph2P(S)NHC(S)(C9H10N)] in toluene. Replacement of one phosphorus atom by a carbon atom in the ligand skeleton of L 1H gave the new ligand L2H, which, upon reaction with GaMe3, gave compound 6, which shows no significant structural differences with respect to 1-5. Therefore, L2H does not induce partial planarity in the six-membered ring, indicating the necessity for replacing both phosphorus atoms of the ligand by carbon atoms, as in the β-diketonate-type derivatives, in order to impose ring planarity. Thus, despite originating from a variety of ligands with differing donor atoms and substituents at the phosphorus atoms, all complexes show little structural differences.
KW - Cationic catalysts
KW - Chelating ligands
KW - Gallium
KW - Metallacycles
KW - Phosphorus
UR - http://www.scopus.com/inward/record.url?scp=4844222149&partnerID=8YFLogxK
U2 - 10.1002/ejic.200400087
DO - 10.1002/ejic.200400087
M3 - Article
AN - SCOPUS:4844222149
SN - 1434-1948
SP - 3743
EP - 3750
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 18
ER -