Abstract
Abstract Solution pyrolysis of arylphosphonium salts of B12H122−,1, utilizing microwave heating provided charge-compensated monophosphine dodecaborate derivatives of general formula B12H11(PPhnR3-n)− (n = 1, R = Me; n = 2, R = Me, Et) in high yield. The resulting anions B12H11(PPh2Me)− (2), B12H11(PPhMe2)− (3), and B12H11(PPh2Et)− (4) were characterized by 11B, 1H, 13C, and 31P NMR spectroscopy, and by negative mode ESI-TOF mass spectrometry. A single-crystal X-ray diffraction study of [Ph3PMe]2 confirmed an icosahedral boron cluster fragment appended by a PPh2Me moiety through a P-B bond.
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