A unique example of an octahedral iron(II) complex containing four triflate anions and two nitrile-like organometallic cations
Abstract
The action of MeSO3CF3 on [Fe2(cp)2(CO)2(µ-CO){µ-C(CN)SMe}]1(cp =η5-C5H5) yields [Fe2(cp)2(CO)2(µ-CO){µ-C(CN)SMe2}][SO3CF3]2. The sulphonium cation is also obtained, trapped in the unusual triflate complex Fe(OSO2CF3)4{Fe2(cp)2(CO)2(µ-CO)[µ-C(CN)SMe2}2]3, by treating the thiolcarbamate [Fe2(cp)2(CO)2(µ-CO){µ-C(CN)N(Me)C(O)SMe}]4 with MeSO3CF3. The X-ray crystal structure of 3 shows the iron(II) centre co-ordinated by four O-bonded triflate anions and by two, mutually trans-disposed, N-co-ordinated organometallic cations in an octahedral geometry.
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