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The mechanism of fluxionality of (1,2,7-η 3-2-Me-benzyl)(η 5-C 5H 5)Mo(CO) 2

Mann, Brian E ; Shaw, Susan D

Journal of Organometallic Chemistry, 1987, Vol.326(1), pp.C13-C16 [Rivista Peer Reviewed]

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  • Titolo:
    The mechanism of fluxionality of (1,2,7-η 3-2-Me-benzyl)(η 5-C 5H 5)Mo(CO) 2
  • Autore: Mann, Brian E ; Shaw, Susan D
  • Note di contenuto: It is shown that (1,2,7-η 3 -2-Me-benzyl)(η 5 -C 5 H 5 )Mo(CO) 2 exits in solution as one isomer which is fluxional, probably via (7-η 1 -2-Me-benzyl)((η 5 -C 5 H 5 )Mo(CO) 2 , with Δ G ≠ 370 = 23.6 ± 1.0 kcal mol −1 . In contrast, (1,2,7-η 3 -3-Me-benzyl)(η 5 -C 5 H 5 )Mo(CO) 2 exits as two isomers at −20°C, which undergo interconversion at room temperature with ΔG ≠ 15.7 kcal mol −1 . This dynamic process is an allyl rotation. It is probable that there is also a low energy [1,5]-sigmatropic shift.
  • Fa parte di: Journal of Organometallic Chemistry, 1987, Vol.326(1), pp.C13-C16
  • Soggetti: Chemistry
  • Lingua: Inglese
  • Tipo: Articolo
  • Identificativo: ISSN: 0022-328X ; E-ISSN: 1872-8561 ; DOI: 10.1016/0022-328X(87)80133-X

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