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Structure and reactivity of germylene-bridged digold complexes

Author

Listed:
  • Liliang Wang

    (Hangzhou Normal University)

  • Guorong Zhen

    (Hangzhou Normal University)

  • Yinhuan Li

    (Hangzhou Normal University)

  • Mitsuo Kira

    (Hangzhou Normal University)

  • Liping Yan

    (Hangzhou Normal University)

  • Xiao-Yong Chang

    (Southern University of Science and Technology)

  • Lu Huang

    (Hangzhou Normal University)

  • Zhifang Li

    (Hangzhou Normal University)

Abstract

The bonding between gold and main-group metallic elements (M) featuring Auδ−−Mδ+ polarity, has been studied recently. The gold in the bonds is expected to have the oxidation number of −1, and hence, nucleophilic. However, the knowledge of the reactivity of the gold-metal bonds remains limited. Here, we report digold-substituted germanes of the form of R’2Ge(AuPR3)(AuGeR’2) (3a; R = Me, 3b; R = Et), featuring two Au-Ge(IV) and one Au-Ge(II) bonds. DFT calculations of 3a revealed the existence of high-lying σ(Ge-Au) type HOMO and low-lying LUMO with germylene pπ nature. A pendular motion of AuPR3 group between Ge(IV) and Ge(II) of 3 occurs in the NMR time scale, suggesting that the Ge(II) center has an enhanced electrophilicity to be attacked by the nucleophilic gold (−I) atom. 3a reacts with nucleophilic Cl− and electrophilic MeOTf reagents at Ge(II) and Ge(IV) centers, respectively.

Suggested Citation

  • Liliang Wang & Guorong Zhen & Yinhuan Li & Mitsuo Kira & Liping Yan & Xiao-Yong Chang & Lu Huang & Zhifang Li, 2022. "Structure and reactivity of germylene-bridged digold complexes," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29476-1
    DOI: 10.1038/s41467-022-29476-1
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