α-Ethoxyvinyllithium: An Unexpected Polymeric Structure—Tetrameric Subunits Linked by Li[BOND]C π Interactions

Authors

  • Dipl.-Chem. Klas Sorger,

    1. Institut für Organische Chemie der Universität Erlangen-Nürnberg, Henkestrasse 42, D-91054 Erlangen (Germany) Telefax: Int. code + (9131)85-9132
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  • Dr. Walter Bauer,

    1. Institut für Organische Chemie der Universität Erlangen-Nürnberg, Henkestrasse 42, D-91054 Erlangen (Germany) Telefax: Int. code + (9131)85-9132
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  • Prof. Dr. Paul von Ragué Schleyer,

    Corresponding author
    1. Institut für Organische Chemie der Universität Erlangen-Nürnberg, Henkestrasse 42, D-91054 Erlangen (Germany) Telefax: Int. code + (9131)85-9132
    • Institut für Organische Chemie der Universität Erlangen-Nürnberg Henkestrasse 42, D-91054 Erlangen (Germany) Telefax: Int. code + (9131)85-9132
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  • Priv.-Doz. Dr. Dietmar Stalke

    1. Institut für Anorganische Chemie der Universität, Tammannstrasse 4, D-37077 Göttingen (Germany)
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  • This work was supported by the Fonds der Chemischen Industrie, the Stiftung Volkwagenwerk, the Convex Computer Corporation, and the Deutsche Forschungsgemeinschaft. K. S. thanks the Freistaat Bayern for a scholarship.

  • Dedicated to Professor Heinz Viehe on the occasion of his 65th birthday

Abstract

original image

Two different Li environments characterize the solvent-free, polymeric structure of 1 in the crystal. A tetrameric chain is formed by Li atoms, which are coordinated by two O and three or five C atoms. In contrast, 1 exists as isolated tetramers in THF. The C(Li)O carbenoid character of 1 results in an elongated C[BOND]O bond and in lithium bridging.

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