Diphosphanyl- and Diarsanyl-Substituted Carbene Homologues: Germanediyls, Stannanediyls, and Plumbanediyls with Remarkable Electronic Structures

Authors

  • Priv.-Doz. Dr. Matthias Driess,

    Corresponding author
    1. Anorganisch-chemisches Institut der Universität, Im Neuenheimer Feld 270, D-69120 Heidelberg (Germany) Telefax: Int. code + (6221) 56-4197
    • Anorganisch-chemisches Institut der Universität, Im Neuenheimer Feld 270, D-69120 Heidelberg (Germany) Telefax: Int. code + (6221) 56-4197
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  • Prof. Dr. Rudolf Janoschek,

    Corresponding author
    1. Institut für Theoretische Chemie der Universität Mozartgasse 14, A-8010 Graz (Austria) Telefax: Int. code + (316) 38-2130
    • Institut für Theoretische Chemie der Universität Mozartgasse 14, A-8010 Graz (Austria) Telefax: Int. code + (316) 38-2130
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  • Dr. Hans Pritzkow,

    1. Anorganisch-chemisches Institut der Universität, Im Neuenheimer Feld 270, D-69120 Heidelberg (Germany) Telefax: Int. code + (6221) 56-4197
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  • Stefan Rell,

    1. Anorganisch-chemisches Institut der Universität, Im Neuenheimer Feld 270, D-69120 Heidelberg (Germany) Telefax: Int. code + (6221) 56-4197
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  • Dr. Uwe Winkler

    1. Anorganisch-chemisches Institut der Universität, Im Neuenheimer Feld 270, D-69120 Heidelberg (Germany) Telefax: Int. code + (6221) 56-4197
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  • This work was supported by the Deutsche Forschungsgemeinschaft (SFB 247) and the Fonds der Chemischen Industrie. We thank the Messer Griesheim GmbH for the donation of chemicals.

  • Dedicated to Professor Egon Uhlig on the occasion of his 65th birthday

Abstract

original image

The unusual, deep green color of the crystalline, stable singlet carbene homologues 14 reflects the significant destabilization of the HOMOs relative to those of other known homologues. Compounds 14 are monomeric both in the solid state and in solution, not least because surprisingly, no donor–acceptor interactions are formed between the F atoms of the sterically demanding groups R1 and the electron-deficient metal centers E. R1 = Si(2,4,6-iPr3C6H2)2F, Si(tBu)(2,4,6-iPr3C6H2)F; R2 = SiiPr3.

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