Synthesis and structure of new homo-and heteroligand carbonyl cluster complexes with [Fe3(μ3-Q)(μ3-X)] core (Q = Se, Te; X = S, As)

Synthesis and structure of new homo-and heteroligand carbonyl cluster complexes with... New cluster complexes of iron [Fe3Q(AsCp*)(CO)9] (Q = Se, Te, Cp* = C5(CH3)5) are synthesized with the square pyramidal cluster core Fe3QAs. A suitable procedure of the synthesis of known heterochalcogenide [Fe3QS(CO)9] clusters is developed. Monosubstituted [Fe3Q(AsCH3)(CO)8(PPh3)] and disubstituted [Fe3Q(AsCH3)(CO)7(PPh3)2] clusters formed in the reactions of [Fe3Q(AsCH3)(CO)9] with PPh3 are studied. In monosubstituted clusters, the phosphine ligand is coordinated in the axial position to the Fe atom in the base of the Fe3QAs square pyramid, while in disubstituted clusters, both phosphine ligands coordinate the Fe atoms in the pyramid base, one ligand being in the axial and another one in the equatorial position. The NMR data support the possibility of migration of the Fe-Fe bonds in a triangle in the cluster core in the case of disubstituted clusters. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Coordination Chemistry Springer Journals

Synthesis and structure of new homo-and heteroligand carbonyl cluster complexes with [Fe3(μ3-Q)(μ3-X)] core (Q = Se, Te; X = S, As)

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Publisher
Springer Journals
Copyright
Copyright © 2006 by Pleiades Publishing, Inc.
Subject
Chemistry; Inorganic Chemistry; Physical Chemistry
ISSN
1070-3284
eISSN
1608-3318
D.O.I.
10.1134/S1070328406060042
Publisher site
See Article on Publisher Site

Abstract

New cluster complexes of iron [Fe3Q(AsCp*)(CO)9] (Q = Se, Te, Cp* = C5(CH3)5) are synthesized with the square pyramidal cluster core Fe3QAs. A suitable procedure of the synthesis of known heterochalcogenide [Fe3QS(CO)9] clusters is developed. Monosubstituted [Fe3Q(AsCH3)(CO)8(PPh3)] and disubstituted [Fe3Q(AsCH3)(CO)7(PPh3)2] clusters formed in the reactions of [Fe3Q(AsCH3)(CO)9] with PPh3 are studied. In monosubstituted clusters, the phosphine ligand is coordinated in the axial position to the Fe atom in the base of the Fe3QAs square pyramid, while in disubstituted clusters, both phosphine ligands coordinate the Fe atoms in the pyramid base, one ligand being in the axial and another one in the equatorial position. The NMR data support the possibility of migration of the Fe-Fe bonds in a triangle in the cluster core in the case of disubstituted clusters.

Journal

Russian Journal of Coordination ChemistrySpringer Journals

Published: Jun 15, 2006

References

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