TY - JOUR
T1 - Dimetallacyclobutadiene derivatives
T2 - Catalysts or catalyst precursors for the ROMP of norbornene?
AU - Eilerts, N. W.
AU - Heppert, J. A.
AU - Morton, M. D.
PY - 1992/10/15
Y1 - 1992/10/15
N2 - Metallacyclobutadiene complexes with the formula (Me3SiCH2)4M2(μ-CSiMe3)2 (M = Ta or W) induce the ring-opening metathesis polymerization (ROMP) of norbornene. The tungsten compound acts as a stand-alone catalyst, polymerizing norbornene with a first-order dependence on both W2 and monomer. In contrast, the tantalum complex requires oxygen as an initiator, and generates an as yet undefined catalyst that shows a zero-order dependence on the monomer concentration.
AB - Metallacyclobutadiene complexes with the formula (Me3SiCH2)4M2(μ-CSiMe3)2 (M = Ta or W) induce the ring-opening metathesis polymerization (ROMP) of norbornene. The tungsten compound acts as a stand-alone catalyst, polymerizing norbornene with a first-order dependence on both W2 and monomer. In contrast, the tantalum complex requires oxygen as an initiator, and generates an as yet undefined catalyst that shows a zero-order dependence on the monomer concentration.
UR - http://www.scopus.com/inward/record.url?scp=0026938202&partnerID=8YFLogxK
U2 - 10.1016/0304-5102(92)80154-9
DO - 10.1016/0304-5102(92)80154-9
M3 - Article
AN - SCOPUS:0026938202
VL - 76
SP - 157
EP - 163
JO - Journal of Molecular Catalysis
JF - Journal of Molecular Catalysis
SN - 0304-5102
IS - 1-3
ER -