Synthesis of a Stable B2H_5~+ Analogue by Protonation of a Double Base-Stabilized Diborane(4)

摘要

On the basis of an analysis of the products formed in the course of reaction between B2H6 and the deuterated magic acid (FSO3D·SbF5), Olah et al. postulated the B2H_5~+ cation in 1988 as a short-lived intermediate formed by protonation of B2H6 and subsequent H2 elimination. The cation had previously been observed in the gas phase after photoioniza-tion of B2H6. However, a salt of this cationic boron hydride has not been synthesized on a preparative scale to date.