Synthesis and Reactivity of an End‐Deck cyclo‐P4 Iron Complex |
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| Authors: | Anthony Cavaillé Dr Nathalie Saffon‐Merceron Dr Noel Nebra Dr Marie Fustier‐Boutignon Dr Nicolas Mézailles |
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| Institution: | 1. Laboratoire Hétérochimie Fondamentale et Appliquée, Université Paul Sabatier, CNRS, Toulouse, France;2. Institut de Chimie de Toulouse ICT-FR2599, Université Paul Sabatier, CNRS, Toulouse Cedex, France |
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| Abstract: | Reduction of the FeII complex (PhPP2Cy)FeCl2] ( 2 ) generated an electron‐rich and unsaturated Fe0 species, which was reacted with white phosphorus. The resulting new complex, (PhPP2Cy)Fe(η4‐P4)] ( 3 ), is the first iron cyclo‐P4 complex and the only known stable end‐deck cyclo‐P4 complex outside Group V. Complex 3 features an FeII center, as shown by Mössbauer spectroscopy, associated to a P42? fragment. The distinct reactivity of complex 3 was rationalized by analysis of the molecular orbitals. Reaction of complex 3 with H+ afforded the unstable complex (PhPP2Cy)Fe(η4‐P4)(H)]+ ( 4 ), whereas with CuCl and BCF, the complexes (PhPP2Cy)Fe(η4:η1‐P4)(μ‐CuCl)]2 ( 5 ) and (PhPP2Cy)Fe(η4:η1‐P4)B(C6F5)3] ( 6 ) were formed. |
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| Keywords: | electron transfer end-deck complexes iron main group chemistry phosphorus |
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