β Scribed by G. Berthier
No coin nor oath required. For personal study only.
Chemists do not take the view that chemistry can be derived from quantum mechanics by computations too literally; the difficulties are illustrated by the double bond concept. Quantum mechanics is very useful, but recent calculations have been mainly concerned with physical properties rather than chemical processes. In general, the chemical formula plays a central role in all interpretation of quantumβchemical results, thus suggesting that the chemical bond is a preexistent notion. Moreover, the BornβOppenheimer approximation seems to be necessary for deriving the existence of bonds between atoms previously assigned to suitable positions. Recent analyses by Claverie and Diner, Woolley, Primas, and others are briefly recalled, concluding with an expression of hope that use of more general Hamiltonians can lead to progress in obtaining a fully independent quantum theory of chemistry.
π SIMILAR VOLUMES
## Abstract The major contributions of BjΓΆrn Roos to actinide chemistry, both in terms of quantum chemical method development and applications, will be reviewed. The extension of the complete active space SCF method followed by second order perturbation theory (CASSCF/CASPT2) method to a relativist