Extended Hückel Molecular Orbital Calculations for the Bridged Annulenes
✍ Scribed by Angelo Gavezzotti; Massimo Simonetta
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- German
- Weight
- 764 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0018-019X
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✦ Synopsis
Abstract
Extended Hückel molecular orbital calculations have been performed for bridged [10], [12] and [14]annulenes. Orbital energies and wave functions were used to investigate the relative stabilities of different geometries. The theoretical results were also used to reinforce and complement available experimental information about aromaticity and reactivity of this series of molecules. Some spectroscopic properties are also discussed.
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The reliability of various modiGcations of the extended-Hiickel m&hod in calculating several energy-related quantities was investigated for a group of diatomic mo!ecules. It was found that the total ener,gy cdn be computed fairly accurately, the nccuracy increasing ns the charge distribution is more
CNDO based molecular orbital caIculations are reported for solid HF and compared with results from a recent structural determmntlon. It is Found that thcoretlcal structure is net in good agreement with that observed experimentally at 4 K.