Abstract25

Paper
Chem. Commun., 1998, 2487 – 2488, DOI: 10.1039/a806898d
Molecular structures of 1,12-B12H10(CO)2 and its dihydrate 1,12-B12H10[C(OH)2]2—a novel bis-carbene complex
Mark A. Fox, Judith A. K. Howard, Janet M. Moloney and Kenneth Wade

Crystal structures of the dicarbonyl 1,12-B12H10(CO)2 and its hydrated form 1,12-B12H10(CO2H2)2·4H2O show little -bond character in their B–C bonds but contain significant distortions from the regular B12 icosahedron geometry; the hydrate, until now thought to be a hydroxonium salt, contains dihydroxycarbene (protonated carboxylic acid
) ligands C(OH)2.