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An Isolable Three-Coordinate Germanone and Its Reactivity.

ABSTRACT: A rare three-coordinate germanone [IPrN]₂ Ge=O (IPrN=bis(2,6-diisopropylphenyl)imidazolin-2-imino) was successfully isolated. The germanone has a rather high thermal stability in arene solvent, and no detectable change was observed at 80 °C for at least one week. However, high thermal stability of [IPrN]₂ Ge=O does not prevent its reactivity toward small molecules. Structural analysis and initial reactivity studies revealed the highly polarized nature of the terminal Ge=O bond. Besides, the addition of phenylacetylene, as well as O-atom transfer with 2,6-dimethylphenyl isocyanide make it a mimic of nucleophilic transition-metal oxides. Mechanism for O-atom transfer reaction was investigated via DFT calculations, which revealed that the reaction proceeds via a [2+2] cycloaddition intermediate.

SUBMITTER: Zhao XX

PROVIDER: S-EPMC9292218 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature

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An Isolable Three-Coordinate Germanone and Its Reactivity.

Zhao Xuan-Xuan XX Szilvási Tibor T Hanusch Franziska F Inoue Shigeyoshi S

Chemistry (Weinheim an der Bergstrasse, Germany) 20211005 64

A rare three-coordinate germanone [IPrN]<sub>2</sub> Ge=O (IPrN=bis(2,6-diisopropylphenyl)imidazolin-2-imino) was successfully isolated. The germanone has a rather high thermal stability in arene solvent, and no detectable change was observed at 80 °C for at least one week. However, high thermal stability of [IPrN]<sub>2</sub> Ge=O does not prevent its reactivity toward small molecules. Structural analysis and initial reactivity studies revealed the highly polarized nature of the terminal Ge=O b ...[more]

PMID: 34529306

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