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The germanone has a rather high thermal stability in arene solvent, and no detectable change was observed at 80\u2009\u00b0C for at least one week. However, high thermal stability of [IPrN]<jats:sub>2<\/jats: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 bond. Besides, the addition of phenylacetylene, as well as O\u2010atom transfer with 2,6\u2010dimethylphenyl isocyanide make it a mimic of nucleophilic transition\u2010metal oxides. Mechanism for O\u2010atom transfer reaction was investigated via DFT calculations, which revealed that the reaction proceeds via a [2+2] cycloaddition intermediate.<\/jats:p>","DOI":"10.1002\/chem.202102972","type":"journal-article","created":{"date-parts":[[2021,9,16]],"date-time":"2021-09-16T08:40:20Z","timestamp":1631781620000},"page":"15914-15917","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["An Isolable Three\u2010Coordinate Germanone and Its Reactivity"],"prefix":"10.1002","volume":"27","author":[{"given":"Xuan\u2010Xuan","family":"Zhao","sequence":"first","affiliation":[{"name":"Department of Chemistry WACKER-Institute of Silicon Chemistry and Catalysis Research Center Technische Universit\u00e4t M\u00fcnchen  Lichtenbergstra\u00dfe 4 85748 Garching bei M\u00fcnchen 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