Nuclear magnetic resonance spectra of some electron-deficient compounds: Boron hydrides, dimers of alkylaluminiums, and organolithium complexes

CONTENTS
I. Introduction 237
II. Qualitative quantum-mechanical ideas about the formation of electron-deficient bonds 231
III. What is understood by the expressions "energetically favourable orbital" and "utilisation of vacant orbitals" 233
IV. NMR spectra of the boron hydrides 233
V. NMR of organoaluminium compounds 236
VI. NMR of organolithium compounds 237