Issue 1, 1980

Dynamic properties and solution structures of the clusters [Fe3(CO)9X2](X = S, Se, Te, or NMe) and their derivatives

Abstract

Variable-temperature 13C n.m.r. spectra of the title species have shown that two distinguishable steps occur in the exchange of carbonyl groups: in the first step the carbonyls at the apical iron atom become equivalent and in the second those at the basal Fe. The replacement of one carbonyl group with a Group 5 ligand yields one isomer, whereas in the case of the disubstituted derivatives two positional isomers have been obtained. The substitution with Group 5 ligands occurs more easily at the basal iron atoms: at the axial position in the monosubstituted derivative and at the axial and an equatorial position at each basal Fe in the most abundant disubstituted isomer. The structure of the adduct [Fe3(CO)9(PBun3)Te2], an intermediate in the formation of the monosubstituted derivatives, is discussed. The dynamic properties of the phosphorus derivatives have also been determined.

Article information

Article type
Paper

J. Chem. Soc., Dalton Trans., 1980, 46-51

Dynamic properties and solution structures of the clusters [Fe3(CO)9X2](X = S, Se, Te, or NMe) and their derivatives

S. Aime, L. Milone, R. Rossetti and P. L. Stanghellini, J. Chem. Soc., Dalton Trans., 1980, 46 DOI: 10.1039/DT9800000046

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