Abstract
The electronic structure of Co3(CO)9CY clusters, where Y = H, F, Cl, Br, I, CH3, CF3, or COOCH3, is discussed on the basis of their He I excited gas-phase photoelectron spectra. A qualitative energy level diagram has been afforded which allows a satisfactory discussion of the PE data. The most interesting feature of our interpretative model is the presence of a molecular orbital of e symmetry which accounts for a large portion of the interaction between the Co3 triangle and the apical carbon atom Cap and for the electron transmission from the apical substituent Y and the cobalt atoms via a resonance-type mechanism. In agreement with previous NQR and IR data, evidence for significant Y→Cap π-bonding donation with Y = Cl, Br, or I is presented. The relationships existing between the present clusters and molecules of type M3(CO)12 and (µ-CH2)[MLn]2 have been stressed.
Lingua originale | Inglese |
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pagine (da-a) | 1081-1084 |
Numero di pagine | 4 |
Rivista | Inorganic Chemistry |
Volume | 21 |
Numero di pubblicazione | 3 |
DOI | |
Stato di pubblicazione | Pubblicato - 1982 |
Pubblicato esternamente | Sì |