Carboranylphosphinic Acids: A New Class of Purely Inorganic Ligands
E. Oleshkevich, F. Teixidor, D. Choquesillo-Lazarte, R. Sillanpää, C. Viñas, Chem. Eur. J.2016, 22, 3665. DOI: 10.1002/chem.201504408
Purely inorganic carboranyl phosphinates were prepared, and the influence of the cluster on the reactivity of the phosphinate group was studied. Electron-withdrawal by the carboranyl carbon atoms, combined with space-filling efficiency and enhanced aromaticity of the cluster cage, renders the phosphorus more difficult to oxidize. This enables carboranyl phosphinates to survive harsh oxidizing conditions, a property which is uncommon in organic phosphinates.
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