The　geometrical　structure　of　the　doubly　negative　charged　closo　boron　hydride　B　15H　15　2-(D　3h)　was　optimized　at　the　HF/6-31G　level,　and　its　energy　properties　and　normal-mode　vibrational　frequencies　were　computed　at　the　same　level　by　using　ab　initio　quantum　chemistry　calculation　method.　The　calculated　results　show　that　the　structure　would　be　indeed　a　stationary　point　on　its　HF/6-31G　potential　hypersurface　and　the　cluster　could　be　predicted　to　be　both　chemically　and　kinetically　stable.