Ab initio potential energy surfaces for BH+2

Preliminary ab initio calculations for the BH⁺₂ potential surface are presented. The reaction B⁺¹S) + H₂ → BH⁺ (B₂ (B²σ⁺) + H is shown to be most likely to occur for C_2v and near C_2v geometrics where there are avoided crossings between the 1 ¹A₁ and 2 ¹A₁ surfaces and between the 2 ¹A₁ and 3 ¹A₁ surfaces which should facilitate non-adiabatic transitions. Bent geometries are alos preferred for the reaction B⁺(¹S) + H₂ → BH⁺(A²π) + H for which there are avoided crossings in C₂ sysmmetry between surfaces correlating with 1 ¹A₁ and 1 ¹B₂ surfaces.