Preface. Reminiscences about electron waves. The quantification of structural effects in stereochemistry by correlation analysis. The stereochemistry and interconversion of nine-membered rings containing one strong torsional constraint. Porphyrin-containing catenanes and rotaxanes. The theoretical determination of Phosphorus NMR Chemical Shielding. Symmetry-broken inversion structures for group 15 EX3 Halides. Vibrational effects in diffraction and microwave experiments: a start on the problem.

Positronium as a sensitive detector of changes in molecular structure. Some relationships between molecular structure and thermochemistry: part 3.