An ab initio molecular orbital study is presented of B2H+3, B2H+2, and B2H+ at the G1 level of theory, including correlation energy beyond fourth-order perturbation theory and large basis sets. The structures of these ions are found to contain no hydrogen bridges in contrast to the previously studied ions (B2H+6, B2H+5, and B2H+4) in this series. Good agreement is found with a recent photoionization measurement of the appearance potentials of the B2H+3 and B2H+2 ions from B2H6.
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Curtiss et al. (1989) studied this question.
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