## Abstract The two‐parameter function, φ = (__C__~1~ + __C__~2~__r__^__n__^^−1^) exp (−ζ__r__), (__n__ = 2–5), has been used as a basis function to determine the independent particle model energy of two‐electron atomic systems in their ground state. The best energy is found for __n__ = 3 (He—B^3+^
Correspondence between GTO and STO molecular basis sets
✍ Scribed by J. Fernández Rico; R. López; G. Ramírez; I. Ema
- Book ID
- 102303418
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 169 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0192-8651
- DOI
- 10.1002/jcc.1121
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✦ Synopsis
Abstract
We present a method for the characterization of the distance between two spaces: one generated by a Gaussian basis set, and another by a Slater basis set. The method is an extension of one previously developed for atoms that has been modified to cover molecular problems. The current version enables us to obtain Slater basis sets capable of reproducing the results (multielectronic wave functions and orbitals) obtained with Gaussian basis sets. The interest of this result arises from the fact that we will be able to profit from the effort invested in the optimization of high‐quality Gaussian basis sets. © 2001 John Wiley & Sons, Inc. J Comput Chem 22: 1655–1665, 2001
📜 SIMILAR VOLUMES
The use of gradient techniques for the development of energy-optimized basis sets has been investigated. The region where the energy surface is approximately quadratic with a positive definite Hessian is found to be very small for large basis sets. However, scaled Newton-Raphson methods prove quite