Dicarbollide analogues of the constrained-geometry polymerization catalyst

Authors
Kim, DH Won, JH Kim, SJ Ko, J Kim, SH Cho, SGC Kang, SO
Citation
Dh. Kim et al., Dicarbollide analogues of the constrained-geometry polymerization catalyst, ORGANOMETAL, 20(21), 2001, pp. 4298-4300
Citations number
56
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
02767333 → ACNP
Volume
20
Issue
21
Year of publication
2001
Pages
4298 - 4300
Database
ISI
SICI code
0276-7333(20011015)20:21<4298:DAOTCP>2.0.ZU;2-6
Abstract
A new type of constrained-geometry complex, [eta (5):eta (1)-RC2B9H9-CH2NMe 2]TiCl2 (3), based on the dimethylamino dicarbollyl ligand has been prepare d and characterized by B-11, C-13, and H-1 NMR spectroscopy. This complex i s the first example of a compound containing the "CGC-type" dicarbollyl lig and for titanium in its highest (4+) oxidation state. Complexes 3 in the pr esence of MMAO exhibit moderate catalytic activities for the ethylene polym erization but produce high-molecular-weight polymers.