Theoretical predictions of AB4 molecular structures are very sensitive to choice of basis set. This has been previously demonstrated for the SH4 and SF4 molecules. Here it is shown that while both minimum and double zeta basis sets predict ClK$ to have a C4v structure, the addition of d functions on
Basis set dependence of the calculated geometry of HNCO
โ Scribed by Christopher Glidewell; Colin Thomson
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 223 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
SW nlcuktt~ons 01 the equhbnum geometry or HNCO have been carried out using gradient techniques and a wde wwty of base sets it 1s concluded that 3d functionsore essential for r&able geometry prechctions III this and related ~socyanntes.
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## Abstract Basisโset balance parameters, defined in terms of various projections of an abstract force vector in the space spanned by the logarithms of orbital exponents, are evaluated for a sample of 100 Gaussian basis sets. These basis sets are taken from a random Gaussian distribution of bases,
## Abstract The nitrogen protonation energies of the imino bases HN๏ฃพCH__R__, where __R__ is H, CH~3~, NH~2~, OH, and F, have been evaluated to determine the dependence of absolute and relative protonation energies on geometry, basis set, and correlation effects. Reliable absolute protonation energi
The protonstion energ& of HzCO and its monosub&ituted derivatives RCHO, where R is CHJ, NHz, OH. and 1'. hwc been evaluated at various levels of theor)r to determine the dependence of absolute and relative protonation energies on wometry, basis set, and correlation effects. Rclhble absolute protonat