A STUDY OF THE REACTIONS OF H-3+, H2D+, HD2+, AND D3+ WITH H-2, HD, AND D2 USING A VARIABLE-TEMPERATURE SELECTED ION FLOW TUBE

The reactions of H-3+ With H-2 in all possible deuterated combinations (i.e., H-3+, H-2D+, HD2+, and D3+ variously with H-2, HD, and D2) have been studied at both 300 and 80 K using a VT-SIFT apparatus. The experimentally determined equilibrium constants are compared with those calculated using statistical mechanics. In general, the experimental and calculated equilibrium constants are in agreement at 300 K but differ significantly al 80 K. The discrepancy is considered in terms of nonequilibration of the reactant species at temperatures below 300 K in the VT-SIFT.