1. Molecular orbital study of proton hyperfine splitting constants in H ₂CN radical

   • Carlo Corvaja
   • Giovanni Giacometti
   • Pierluigi Nordio

   OriginalPaper Pages: 393 - 396

2. The electron-spin resonance spectra of 1,4-dithiin radical-cations and the nature of the carbon-sulphur π-bond

   • E. A. C. Lucken

   OriginalPaper Pages: 397 - 403

3. Non-neighbour effects on hyperfine coupling constants in alternant hydrocarbon radicals

   • G. Giacometti
   • P. L. Nordio
   • M. V. Pavan

   OriginalPaper Pages: 404 - 409

4. A one-centre treatment of the ammonium and borohydride ions

   • David M. Bishop

   OriginalPaper Pages: 410 - 417

5. Zur metall-ring-bindung in sandwich-komplexen

   • R. Dieter Fischer

   OriginalPaper Pages: 418 - 431

6. Beiträge zur Theorie der π-Elektronensysteme von Hückel und Hartmann

   • G. Diercksen
   • H. Preuss

   OriginalPaper Pages: 432 - 447

7. Isoelectronic sequences of hydride molecules

   • G. G. Hall
   • D. Rees

   OriginalPaper Pages: 448 - 457

8. The configuration of diphenyl in the crystalline and in the vapour states: A simple non-bonded H-H potential function

   • T. H. Goodwin
   • D. A. Morton-Blake

   OriginalPaper Pages: 458 - 462

9. The interpretation of the stability of aromatic hydrocarbon ions by valence bond theory

   • H. Fischer
   • J. N. Murrell

   OriginalPaper Pages: 463 - 467

10. Studies of delocalized electron bonding

    • Harry G. Hecht

    Erratum Pages: 468 - 468

11. Recensiones

    • H. Hartmann
    • J. W. Linnett

    BookReview Pages: 469 - 470