TY - JOUR
T1 - Sol-gel entrapped lipophilic and hydrophilic ruthenium-, rhodium-, and iridium-phosphine complexes as recyclable isomerization catalysts
AU - Sertchook, Hanan
AU - Avnir, David
AU - Blum, Jochanan
AU - Joó, Ferenc
AU - Kathó, Ágnes
AU - Schumann, Herbert
AU - Weimann, Roman
AU - Wernik, Sonja
PY - 1996
Y1 - 1996
N2 - The phosphinated complexes RuCl2(PPh3)3, 1, RhCl(PPh3)3, 2, IrCl(CO)(PPh3)2, 3, their water soluble sulfonated analogs RuCl2[Ph2P(3-C6H4SO 3Na)]2 · 4H2O, 4, RhCl[Ph2P(3-C6H4SO3Na)]3 · 4H2O, 5, IrCl(CO)[Ph2P(3-C6H4SO3Na)] 2, 6, as well as the dirhodium compounds trans-[Rh(CO)(PPh3)(μ-pz)]2, 7, and trans-[Rh(CO)(PPh3)(μ-Cl)]2, 9 were entrapped physically in SiO2 sol-gel matrices. Replacement of the PPh3 ligands in the two latter complexes by Ph2P(CH2)2Si(OEt)3 groups enabled to bind of the dirhodium complexes chemically to the matrix backbone via the silyloxy functions. The activity of the immobilized complexes as allylbenzene isomerization catalysts was studied and compared. Entrapped complex 4 was found to be the most efficient catalyst.
AB - The phosphinated complexes RuCl2(PPh3)3, 1, RhCl(PPh3)3, 2, IrCl(CO)(PPh3)2, 3, their water soluble sulfonated analogs RuCl2[Ph2P(3-C6H4SO 3Na)]2 · 4H2O, 4, RhCl[Ph2P(3-C6H4SO3Na)]3 · 4H2O, 5, IrCl(CO)[Ph2P(3-C6H4SO3Na)] 2, 6, as well as the dirhodium compounds trans-[Rh(CO)(PPh3)(μ-pz)]2, 7, and trans-[Rh(CO)(PPh3)(μ-Cl)]2, 9 were entrapped physically in SiO2 sol-gel matrices. Replacement of the PPh3 ligands in the two latter complexes by Ph2P(CH2)2Si(OEt)3 groups enabled to bind of the dirhodium complexes chemically to the matrix backbone via the silyloxy functions. The activity of the immobilized complexes as allylbenzene isomerization catalysts was studied and compared. Entrapped complex 4 was found to be the most efficient catalyst.
KW - Indium
KW - Isomerization
KW - Rhodium
KW - Ruthenium
KW - Sol-gel
UR - http://www.scopus.com/inward/record.url?scp=10644239264&partnerID=8YFLogxK
U2 - 10.1016/1381-1169(95)00301-0
DO - 10.1016/1381-1169(95)00301-0
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:10644239264
SN - 1381-1169
VL - 108
SP - 153
EP - 160
JO - Journal of Molecular Catalysis A: Chemical
JF - Journal of Molecular Catalysis A: Chemical
IS - 3
ER -