Electrostatic corrections to extended Hückel theory
✍ Scribed by R. Carbó; J. M. Fornos; J. A. Hernández; F. Sanz
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 268 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
Abstract
An electrostatic correction to the energy of the EH method is deduced from the Hartree energy. A recent correction, due to Anderson and Hoffmann, is easily deduced as a particular case. Some calculations show how the correction can improve the description of stretching problems by EH calculations but poor results are obtained in bending and torsion problems.
📜 SIMILAR VOLUMES
A rehtivisticltlly parameterized extended Hiickel molecular orbital method is outlined. One-electron effectike hamiltonian matrix eIements are rehted to the correspondin\* ore&p mart-i. elements calculated in a~ atomic llsj?n) b&r Different atomic rzdial functions are used for the j = I + $-and j =
## Abstract A self‐consistent procedure for the Hückel theory, first indicated by Harris [J. Chem. Phys. **48**, 4027 (1968)] has been fully developed. To avoid time consuming repeated orthogonal‐nonorthogonal transformations and diagonalization of large matrices, a steepest descent technique has b
## Abstract A computational technique within the Extended Hückel frame‐work for the calculation of the hydrogen‐molecule interaction energy is described. The procedure is ten times faster than the usual diagonalization procedure. The algorithm consists of transforming the generalized secular equat