TY - JOUR
T1 - Catalytic polymerization of propylene by heterobimetallic bridged early/late transition metal complexes
AU - Shribman, Tal
AU - Kurz, Stefan
AU - Senff, Uwe
AU - Lindberg, Frank
AU - Hey-Hawkins, Evamarie
AU - Eisen, Moris S.
N1 - Funding Information:
The research was supported by the German–Israeli foundation for scientific research and development (GIF) under grant agreement No. I-0437-142.05/95 and by The Technion V.P.R. Fund Promotion of Sponsor Research.
PY - 1998/3/6
Y1 - 1998/3/6
N2 - The polymerization of propylene was studied with a series of dinuclear early transition metal zirconocene-late transition metal complexes bridged by phosphido and arsenido moieties of general formula [(η5-C5H4R'')2Zr{μ-ERR'}2M(CO)(n)] (E = P, R = R' = SiMe3, R''= H, M = Mo, n = 4 (1); E = P, R = R' = SiMe3, R'' = H, M = Ni, n = 2 (2); E = As, R = R' = SiMe3, R''= H, M = Cr, n = 4 (3); E = P, R = H, R' = 2,4,6-i-Pr3C6H2, R''= Me, M = Mo, n = 4 (4); E = P, R = H, R' = 2,4,6-i-Pr3C6H2, R''= Me, M = Cr, n = 4 (5)), as well as with the corresponding monometallic zirconocene precursor complexes of the type [(η5-C5H4R'')2Zr(ERR')2] (E = P, R = R' = SiMe3, R'' = H (6); E = P, R = H, R' = 2,4,6-i-Pr3C6H2, R'' = H (7)) and [(η5-C5H4Me)2Zr(ERR')Cl] (E = P, R = H, R' = 2,4,6-i-Pr3C6H2 (8)). The active cationic species were generated treating the complexes with an excess of methylalumoxane (MAO). The catalytic activity was found to be strongly dependent on temperature and catalyst/MAO ratio.
AB - The polymerization of propylene was studied with a series of dinuclear early transition metal zirconocene-late transition metal complexes bridged by phosphido and arsenido moieties of general formula [(η5-C5H4R'')2Zr{μ-ERR'}2M(CO)(n)] (E = P, R = R' = SiMe3, R''= H, M = Mo, n = 4 (1); E = P, R = R' = SiMe3, R'' = H, M = Ni, n = 2 (2); E = As, R = R' = SiMe3, R''= H, M = Cr, n = 4 (3); E = P, R = H, R' = 2,4,6-i-Pr3C6H2, R''= Me, M = Mo, n = 4 (4); E = P, R = H, R' = 2,4,6-i-Pr3C6H2, R''= Me, M = Cr, n = 4 (5)), as well as with the corresponding monometallic zirconocene precursor complexes of the type [(η5-C5H4R'')2Zr(ERR')2] (E = P, R = R' = SiMe3, R'' = H (6); E = P, R = H, R' = 2,4,6-i-Pr3C6H2, R'' = H (7)) and [(η5-C5H4Me)2Zr(ERR')Cl] (E = P, R = H, R' = 2,4,6-i-Pr3C6H2 (8)). The active cationic species were generated treating the complexes with an excess of methylalumoxane (MAO). The catalytic activity was found to be strongly dependent on temperature and catalyst/MAO ratio.
UR - http://www.scopus.com/inward/record.url?scp=0032489642&partnerID=8YFLogxK
U2 - 10.1016/S1381-1169(97)00184-2
DO - 10.1016/S1381-1169(97)00184-2
M3 - 文章
AN - SCOPUS:0032489642
SN - 1381-1169
VL - 129
SP - 191
EP - 198
JO - Journal of Molecular Catalysis A: Chemical
JF - Journal of Molecular Catalysis A: Chemical
IS - 2-3
ER -