Structure of [(CO)5CrNEt2]BF4, a Key Organometallic Compound; Reaction to Give the Carbene Complex (CO)5CrC(AsPh2)NEt2

Authors

  • Dr. habil. Ulrich Schubert,

    1. Anorganisch-chemisches Institut der Technischen Universität, München, Lichtenbergstrasse 4, D-8046 Garching (Germany)
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  • Prof. Dr. Ernst Otto Fischer,

    1. Anorganisch-chemisches Institut der Technischen Universität, München, Lichtenbergstrasse 4, D-8046 Garching (Germany)
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  • Dipl.-Chem. Dieter Wittmann

    Corresponding author
    1. Anorganisch-chemisches Institut der Technischen Universität, München, Lichtenbergstrasse 4, D-8046 Garching (Germany)
    • Anorganisch-chemisches Institut der Technischen Universität, München Lichtenbergstrasse 4, D-8046 Garching (Germany)
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  • Transition Metal-Carbyne Complexes, Part 58.—Part 57: E. O. Fischer, W. Röll, Angew. Chem. 92, 206 (1980); Angew. Chem. Int. Ed. Engl. 19, 205 (1980).

Abstract

The bond lengths in the carbyne complex [(CO)5CrCNEt2]BF4 suggest considerable participation of the resonance form (B). The complex is a valuable intermediate, for it affords carbene complexes even with weak nucleophiles. A new example of the utility of this approach is provided by the reaction of the intermediate with KAsPh2 to give (CO)5CrC(AsPh2)NEt2.

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