Reactivity of a N-Coordinated Germylene-Borane Complex: From Ge -> B to Ge -> Ga Coordination

Dominik Vitek, Ales Ruzicka, Lise Vermeersch, Libor Dostal, Jan Turek, Roman Jambor

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Abstract

Reactivity studies of the GeII→B complex L(Cl)Ge⋅BH3 (1; L=2-Et2NCH2-4,6-tBu2-C6H2) were performed to determine the effect on the GeII→B donation. N-coordinated compounds L(OtBu)Ge⋅BH3 (2) and [LGe⋅BH3]2 (3) were prepared. The possible tuning of the GeII→B interaction was proved experimentally, yielding compounds 1-PPh2-8-(LGe)-C10H6 (4) and L(Cl)Ge⋅GaCl3 (5) without a GeII→B interaction. In 5, an unprecedented GeII→Ga coordination was revealed. The experimental results were complemented by a theoretical study focusing on the bonding in 1−5. The different strength of the GeII→E (E=B, Ga) donation was evaluated by using energy decomposition analysis. The basicity of different L(X)Ge groups through proton affinity is also assessed.
Original languageEnglish
Article numbere202202639
Number of pages8
JournalChemistry - a European Journal
Volume28
Issue number70
DOIs
Publication statusPublished - 15 Dec 2022

Bibliographical note

Funding Information:
We would like to acknowledge the Czech Science foundation (project no. 20‐10417S) for financial support. J.T. gratefully acknowledges the financial support of the Research Foundation‐Flanders (FWO; Project no. 12Y7721N) and the computational resources and services provided by the VSC (Flemish Supercomputer Center), funded by the FWO and the Flemish Government. L.V. wishes to thank the Vrije Universiteit Brussel (VUB) for the OZR predoctoral backup mandate.

Funding Information:
We would like to acknowledge the Czech Science foundation (project no. 20-10417S) for financial support. J.T. gratefully acknowledges the financial support of the Research Foundation-Flanders (FWO; Project no. 12Y7721N) and the computational resources and services provided by the VSC (Flemish Supercomputer Center), funded by the FWO and the Flemish Government. L.V. wishes to thank the Vrije Universiteit Brussel (VUB) for the OZR predoctoral backup mandate.

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

Copyright:
Copyright 2022 Elsevier B.V., All rights reserved.

Keywords

  • coordination bond
  • germylene
  • group 13 metals
  • NMR spectroscopy
  • proton affinity

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