The e.s.r. spectra of the paramagnetic [Fe3Pt3(CO)15]- monoanion have been recorded in solution and in the solid state at variable concentration and temperature. A comparison of e.s.r. and electronic diffuse-reflectance spectra with X-ray structural data of [Fe3Pt3(CO)15]n- (n = 1 or 2) clusters suggests that the unpaired electron is mainly located in a non-degenerate molecular orbital of the triplatinum system which, under an idealized D3h symmetry, may primarily be the a2′* combination of three dxz platinum orbitals. The stability of the paramagnetic cluster probably derives from the unpaired electron being localised mostly on the platinum atoms, and from the steric properties of the μ-Fe(CO)4 groups which hinder spin-pairing by dimerization.

Longoni, G., Morazzoni, F. (1981). ELECTRON-SPIN RESONANCE BEHAVIOR OF THE [FE3PT3(CO)15]- CARBONYL CLUSTER ANION. JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS(8), 1735-1737 [10.1039/dt9810001735].

ELECTRON-SPIN RESONANCE BEHAVIOR OF THE [FE3PT3(CO)15]- CARBONYL CLUSTER ANION

MORAZZONI, FRANCA
1981

Abstract

The e.s.r. spectra of the paramagnetic [Fe3Pt3(CO)15]- monoanion have been recorded in solution and in the solid state at variable concentration and temperature. A comparison of e.s.r. and electronic diffuse-reflectance spectra with X-ray structural data of [Fe3Pt3(CO)15]n- (n = 1 or 2) clusters suggests that the unpaired electron is mainly located in a non-degenerate molecular orbital of the triplatinum system which, under an idealized D3h symmetry, may primarily be the a2′* combination of three dxz platinum orbitals. The stability of the paramagnetic cluster probably derives from the unpaired electron being localised mostly on the platinum atoms, and from the steric properties of the μ-Fe(CO)4 groups which hinder spin-pairing by dimerization.
Articolo in rivista - Articolo scientifico
EPR, [FE3PT3(CO)15, CARBONYL CLUSTER ANION,
English
1981
8
1735
1737
none
Longoni, G., Morazzoni, F. (1981). ELECTRON-SPIN RESONANCE BEHAVIOR OF THE [FE3PT3(CO)15]- CARBONYL CLUSTER ANION. JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS(8), 1735-1737 [10.1039/dt9810001735].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/32677
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