TY - JOUR
T1 - Synthesis of Imidazolin-2-iminato Titanium Complexes Containing Aryloxo Ligands and Their Catalytic Performance in the Polymerization of α-Olefins
AU - Shoken, Dana
AU - Shimon, Linda J.W.
AU - Tamm, Matthias
AU - Eisen, Moris S.
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/5/9
Y1 - 2016/5/9
N2 - The synthesis of mixed (aryloxo)(imidazolin-2-iminato)titanium dichloride complexes is presented. Full characterization of the complexes, including solid-state X-ray diffraction analysis of four complexes, is reported. Their catalytic activity in the polymerization of ethylene, propylene, 1-hexene, and 1-octene was studied. The different substituents at the aryloxo moiety were found to have a substantial impact on the reactivity of the complexes, indicating the need for a balance of steric and electronic effects. The complex (1,3-di-tert-butylimidazolin-2-iminato)(2,6-di-tert-butyl-4-methylphenoxide)titanium dichloride (1) was found to be the most active in the polymerization of ethylene, whereas the complex (1,3-di-tert-butylimidazolin-2-iminato)(2,6-di-tert-butylphenoxide)titanium dichloride (2) was found to be the most active in the polymerization of propylene. Interestingly, all complexes were more active in the polymerization of propylene than in that of ethylene.
AB - The synthesis of mixed (aryloxo)(imidazolin-2-iminato)titanium dichloride complexes is presented. Full characterization of the complexes, including solid-state X-ray diffraction analysis of four complexes, is reported. Their catalytic activity in the polymerization of ethylene, propylene, 1-hexene, and 1-octene was studied. The different substituents at the aryloxo moiety were found to have a substantial impact on the reactivity of the complexes, indicating the need for a balance of steric and electronic effects. The complex (1,3-di-tert-butylimidazolin-2-iminato)(2,6-di-tert-butyl-4-methylphenoxide)titanium dichloride (1) was found to be the most active in the polymerization of ethylene, whereas the complex (1,3-di-tert-butylimidazolin-2-iminato)(2,6-di-tert-butylphenoxide)titanium dichloride (2) was found to be the most active in the polymerization of propylene. Interestingly, all complexes were more active in the polymerization of propylene than in that of ethylene.
UR - http://www.scopus.com/inward/record.url?scp=84969548793&partnerID=8YFLogxK
U2 - 10.1021/acs.organomet.6b00117
DO - 10.1021/acs.organomet.6b00117
M3 - 文章
AN - SCOPUS:84969548793
SN - 0276-7333
VL - 35
SP - 1125
EP - 1131
JO - Organometallics
JF - Organometallics
IS - 8
ER -