1. Theoretical assignments of the electronic spectrum of acetylene

   • Daniel Demoulin
   • Martin Jungen

   Commentationes Pages: 1 - 17

2. Valence bond studies of AH₂ molecules

   • Robert G. A. R. Maclagan
   • H. David Todd

   Commentationes Pages: 19 - 29

3. The UHF-CNDO/2 study of tetra-atomic radicals containing silicon and phosphorus

   • Yuri I. Gorlov
   • Ivan I. Ukrainsky
   • Vladimir V. Penkovsky

   Commentationes Pages: 31 - 38

4. Bond orbital analysis of the deuteron quadrupole coupling constants in MD₄ molecules

   • Shaul D. Goren

   Commentationes Pages: 39 - 47

5. The electronic structure of FeO ₄ ²⁻ , RuO₄, RuO ₄ ⁻ , RuO ₄ ²⁻ and OsO₄ by the HFS-DVM method

   • A. Rauk
   • T. Ziegler
   • D. E. Ellis

   Commentationes Pages: 49 - 59

6. A complete diagrammatic construction of PCILO method

   • Vladimír Kvasnička

   Commentationes Pages: 61 - 65

7. Einzentrenmodell für die Clusterverbindung [Nb₆Cl₁₂]⁴⁺

   • Joachim Wirsich

   Relationes Pages: 67 - 72

8. Electron transfer in atomic-molecular collisions

   • E. A. Andreev

   Relationes Pages: 73 - 77

9. Les orbitales de Slater à nombre quantique ≪n≫ non-entier

   • Alain Allouche

   Relationes Pages: 79 - 83

10. A comparison of quantitative theoretical results of the bonding in Ni(CO)₄ and Ni(N₂)₄

    • Herman B. Jansen
    • Piet Ros

    Relationes Pages: 85 - 90

11. Recensiones

    • Takeshi Nakajima
    • W. F. Schmidt

    BookReview Pages: 91 - 92