Substituent effects in allylmetal carbonyls
1974; Elsevier BV; Volume: 66; Issue: 1 Linguagem: Inglês
10.1016/s0022-328x(00)93895-6
ISSN1872-8561
AutoresHenry Lowther Clarke, N.J. Fitzpatrick,
Tópico(s)Metal-Catalyzed Oxygenation Mechanisms
ResumoThe Mössbauer and IR spectra of (π-C3H4X)Fe(CO)2NO (X = H, 1-CH3, 2-CH3, 1-Cl) indicate that the carbonyl and nitrosyl groups absorb the inductive effects of allyl substituents, leaving the metal s electron density relatively unaffected. The NMR spectra and carbonyl vibrational frequencies of (π-C3H4X)Co(CO)2PPh3 (X = H, 1-CH3, 2-CH3, 2-Cl) show that the electronic effects are similar to those found in the parent (π-C3H4X)Co(CO)3 compounds, and that there is no evidence of asymmetric π,σ-bonding in (π-C3H4X)Co(CO)2PPh3.
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