We. report a benchmark calculation of the structure and harmonic vibrational frequencies of the ozone molecule using the full coupled-cluster single, double, and tripleexcitation model (CCSDT) with a DZP basis set. The resultsoffer a definitive reference for assessing the accuracy of methods which a
Structure and harmonic vibrational frequencies of the carbon suboxide molecule using analytic derivative methods
โ Scribed by R.D. Amos
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 569 KB
- Volume
- 108
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
Analytic gradient and second-derivative m+ods are used to obtain the equilibrium geometry and vibrational frequencies of the carbon suboxide molecule. The wry-low-frequency bending mode is reproduced by the calculation. At the SCF level the linear geometry is found to be the equilibrium structure.
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This is the second of two companion papers which collectively present a method for the analysis of complex structures built-up from sti! beams and #exible plates. The method separates the sti! parts of the structure (which support the vibration sources) and the #exible parts of the structure, models