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OsHCl(CO)(PiPr3)2 as catalyst for ring-opening metathesis polymerization (ROMP) and tandem ROMP-hydrogenation of norbornene and 2,5-norbornadiene

AuthorsCobo, Noelia; Esteruelas, Miguel A. ; González, Fernando; Herrero, Juana; López, Ana M. ; Lucio, Patricia; Oliván, Montserrat
Issue Date2004
CitationJournal of Catalysis 223(2): 319-327 (2004)
AbstractComplex OsHCl(CO)(PiPr3)2 catalyzes the ring-opening metathesis polymerization (ROMP) of norbornene and 2,5-norbornadiene to give poly(norbornene) and poly(norbornadiene), respectively. In both cases the resulting polymers have a high cis (74-95%) content. The stereoregularity or tacticity of the cyclopentane and cyclopentene ring sequences in poly(norbornene) and poly(norbornadiene) estimated from the 13C{1H} NMR spectra of the hydrogenated derivatives was found to be syndiotactic. Complex OsHCl(CO)(PiPr3) 2 is also active in tandem ROMP-hydrogenation of norbornene and 2,5-norbornadiene. At 40°C and 3 atm of H2, poly(norbornene) is fully hydrogenated in 48 h, while poly(norbornadiene) is fully hydrogenated in 48 h at 75°C and 3 atm of H2. The complex RuHCl(CO)(P iPr3)2 is also active in ROMP and tandem ROMP-hydrogenation of norbornene, obtaining trans-poly(norbornene) and hydrogenated poly(norbornene), respectively. © 2004 Elsevier Inc. All rights reserved.
Identifiersdoi: 10.1016/j.jcat.2004.01.028
issn: 0021-9517
Appears in Collections:(ICMA) Artículos
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