Kinetics and mechanism of the thermal decomposition of hexaborane(12) in the gas phase
Abstract
The gas-phase thermolysis of arachno-B6H12 produces predominantly B5H9 and B2H6 in a molar ratio of 2 : 1 via a first-order reaction having Arrhenius parameters which are essentially identical to those reported for the decompositiori of the structurally related B5H11; these results imply a mechanism involving elimination of BH3 as the rate-determining intial step in both reactions.