Theoretica chimica acta

, Volume 65, Issue 4, pp 303–310 | Cite as

Momentum density and molecular geometry. Bent BH 2 and linear BH 2 +

  • Toshikatsu Koga
  • Hisayoshi Kobayashi
Original Investigations


Based on a special form of the molecular virial theorem, the recently proposed method of momentum density for interatomic interactions is here applied to the problem of molecular geometry. Two molecules BH 2 and BH 2 + , which have the same nuclear framework but favor respectively bent and linear conformations, are comparatively studied. Using an approximate Hartree-Fock momentum density, the total molecular energy (including the nuclear repulsion) is partitioned into orbital components, and a geometry correlation diagram is derived. An atom-bond partitioning of the total energy is also examined based on the one- and two-center decomposition of the momentum density.

Key words

Momentum density BH2and BH2+ geometries of ∼ virial theorem 


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Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • Toshikatsu Koga
    • 1
  • Hisayoshi Kobayashi
    • 2
  1. 1.Department of Applied Chemistry and Department of Applied Science for EnergyMuroran Institute of TechnologyHokkaidoJapan
  2. 2.Faculty of Living ScienceKyoto Prefectural UniversityKyotoJapan

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