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Issue 42, 2016
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Three and four coordinate Fe carbodiphosphorane complexes

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Abstract

Carbodiphosphoranes (CDPs) are a family of divalent carbon ligands that are known for their exceptional electron donor properties. Herein, the preparation and reactivity of a family of three and four co-ordinate Fe carbodiphosphorane complexes is described. Hexaphenylcarbodiphosphorane (HCDP) [1] is shown to react with FeCl2(PPh3)2 to form the three coordinate adduct Fe(HCDP)Cl2 [2], which is equilibrium with its four coordinate dimer. Reaction of [2] with two equivalents of benzyl Grignard yields the corresponding dialkyl complex (HCDP)FeBn2 [3]. Combination of [2] with LiHMDS results in salt metathesis and the formation of the monosilylated derivative Fe(HCDP)Cl(N(SiMe3)2) [4]. Subsequent anion exchange leads to the three coordinate Fe(HCDP)(OTf)(N(SiMe3)2) [5] which was characterized crystallographically and in solution.

Graphical abstract: Three and four coordinate Fe carbodiphosphorane complexes

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Publication details

The article was received on 03 Sep 2016, accepted on 22 Sep 2016 and first published on 23 Sep 2016


Article type: Paper
DOI: 10.1039/C6DT03453E
Citation: Dalton Trans., 2016,45, 16820-16825
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    Three and four coordinate Fe carbodiphosphorane complexes

    C. Pranckevicius, D. A. Iovan and D. W. Stephan, Dalton Trans., 2016, 45, 16820
    DOI: 10.1039/C6DT03453E

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