Germyliumylidene : a versatile low valent group 14 catalyst

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Sarkar, Debotra and Dutta, Sayan and Weetman, Catherine and Schubert, Emeric and Koley, Debasis and Inoue, Shigeyoshi (2021) Germyliumylidene : a versatile low valent group 14 catalyst. Chemistry - A European Journal, 27 (51). pp. 13072-13078. ISSN 1521-3765 (https://doi.org/10.1002/chem.202102233)

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Abstract

Bis-NHC stabilized germyliumylidenes [RGe(NHC) 2] + are typically Lewis basic (LB) in nature, owing to their lone pair and coordination of two NHCs to the vacant p-orbitals of the germanium center. However, they can also show Lewis acidity (LA) via Ge−C NHC σ* orbital. Utilizing this unique electronic feature, we report the first example of bis-NHC-stabilized germyliumylidene [ MesTerGe(NHC) 2]Cl (1), ( MesTer=2,6-(2,4,6-Me 3C 6H 2) 2C 6H 3; NHC= IMe 4=1,3,4,5-tetramethylimidazol-2-ylidene) catalyzed reduction of CO 2 with amines and arylsilane, which proceeds via its Lewis basic nature. In contrast, the Lewis acid nature of 1 is utilized in the catalyzed hydroboration and cyanosilylation of carbonyls, thus highlighting the versatile ambiphilic nature of bis-NHC stabilized germyliumylidenes.

ORCID iDs

Sarkar, Debotra, Dutta, Sayan, Weetman, Catherine ORCID logoORCID: https://orcid.org/0000-0001-5643-9256, Schubert, Emeric, Koley, Debasis and Inoue, Shigeyoshi;
  • Item type:Article
    ID code:77484
    Dates:
    Date
    Event
    9 September 2021
    Published
    22 June 2021
    Accepted
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:19 Aug 2021 12:40
    Last modified:12 Dec 2024 11:48
    URI:https://strathprints.strath.ac.uk/id/eprint/77484
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