1. Molecular Orbital Calculations on Copper Chloride Complexes

   • P. Ros
   • G. C. A. Schuit

   Commentationes Pages: 1 - 12

2. Transition Probabilities in the CuCl ₄ ²⁻ -Complex

   • A. van der Avoird
   • P. Ros

   Commentationes Pages: 13 - 21

3. Two-configuration, self-consistent field theory

   • A. Veillard

   Commentationes Pages: 22 - 29

4. Two by two rotations of orbitals for minimizing the energy of LCAO-MO wave functions

   • Massimo Rossi

   Commentationes Pages: 30 - 36

5. Generalized Hückel treatment of a simple model of transannular interaction and excimer formation

   • Rudolf Polák
   • Josef Paldus

   Commentationes Pages: 37 - 43

6. Porphyrins

   • Michael Zerner
   • Martin Gouterman

   Commentationes Pages: 44 - 63

7. The electronic spectra of [n]-radialenes

   • E. Heilbronner

   OriginalPaper Pages: 64 - 68

8. Calculation of the π-electronic structures of vinyl boron compounds by the free-electron Method

   • D. R. Armstrong
   • P. G. Perkins

   Commentationes Pages: 69 - 84

9. The Calculation of directly bonded ¹³C-H and ¹³C-¹³C coupling constants using delocalized molecular orbital theory

   • F. B. van Duijneveldt
   • V. M. S. Gil
   • J. N. Murrell

   Commentationes Pages: 85 - 93

10. Simple Hückel calculation on triphenyl cyclopropenyl cation

    • Rama Basu
    • Swapan Kumar Bose

    Relationes Pages: 94 - 97

11. Unter Vernachlässigung der Elektronenwechselwirkung erhaltene Molekülbahnfunktionen als Basis für

    • N. Tyutyulkov
    • R. Vodenitscharov

    Relationes Pages: 98 - 100