Work

Direct access to a neutral alumene via CO reduction by a dialane and further CO homologation

Year: 2025

Type: article

Abstract: Multiple bonds between heavy elements have been shown to be not only stable but also offer divergent reactivity. Accordingly, there has been a drive in research to isolate such species. Here we report on the synthesis of a compound containing an aluminium–carbon double bond (alumene). The alumene was formed by exposing a dialane to a CO atmosphere. Experimental data and quantum chemical calculations confirm the existence of a π -bond between the aluminium and carbon centre. The mechanism for the formation of the alumene was calculated and indicated a heterocyclic intermediate, which we were able to observe spectroscopically. Treating the alumene with excess CO leads to CO homologation, forming a C 3 O 2 chain initiated by interaction of a CO molecule with the π -bond of Al=C.

Source: Nature Synthesis

DOI: 10.1038/s44160-025-00874-9

Authors: John A. Kelly, Arseni Kostenko, Shigeyoshi Inoue

Institution: Technical University of Munich

Language: English

Topic: Synthesis and characterization of novel inorganic/organometallic compounds

Subfield: Inorganic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $12,690

Funders: Technische Universität München, Leibniz-Gemeinschaft, Leibniz-Rechenzentrum, H2020 European Research Council