Studies on the nature of active species in W(CO)(6)/CCl4/hv system as applied to metathesis polymerisation reactions

Authors
Bhukta, G Manivannan, R Sundararajan, G
Citation
G. Bhukta et al., Studies on the nature of active species in W(CO)(6)/CCl4/hv system as applied to metathesis polymerisation reactions, J ORGMET CH, 601(1), 2000, pp. 16-21
Citations number
10
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF ORGANOMETALLIC CHEMISTRY
ISSN journal
0022328X → ACNP
Volume
601
Issue
1
Year of publication
2000
Pages
16 - 21
Database
ISI
SICI code
0022-328X(20000420)601:1<16:SOTNOA>2.0.ZU;2-H
Abstract
Irradiation of W(CO)(6) in CCl4 generates an 'active species' which has the ability to polymerise alkynes and strained cyclic olefins via a metathesis pathway. The precipitate formed after 2 h of irradiation is active for pol ymerisation. The involvement of metal carbene in the polymerisation of norb ornene was proved by in situ H-1-NMR study and by the end-capping reaction. IR studies showed the presence of carbonyl and chlorine ligands around the tungsten centre. (C) 2000 Elsevier Science S.A. All rights reserved.