1. The ligand field as a pseudo-potential

   • C. J. Ballhausen
   • J. P. Dahl

   Commentationes Pages: 169 - 174

2. A theoretical study of electrophilic aromatic substitution

   • Pietro Cremaschi
   • Massimo Simonetta

   Commentationes Pages: 175 - 182

3. Crucial role of electron correlation in both the upper and lower states in optical transitions

   • Oktay Sinanoğlu
   • Donald R. Beck

   Commentationes Pages: 183 - 187

4. Models and paradoxes in quantum chemistry

   • C. K. Jørgensen

   Commentationes Pages: 189 - 198

5. Determination of the H₂-H₂ potential from absolute integral cross section measurements

   • Rolf Gengenbach
   • Christian Hahn
   • Jan Peter Toennies

   Commentationes Pages: 199 - 212

6. Semiempirical MO calculations on symmetry governed reactions

   • Patrick Coffey
   • Karl Jug

   Commentationes Pages: 213 - 224

7. Optimized statistical exchange parameters α for atoms with higherZ

   • Karlheinz Schwarz

   Commentationes Pages: 225 - 231

8. Bond models for the photochemical reactivity of transition metal complexes

   • Claudio Furlani

   Relationes Pages: 233 - 236