The ArHN~ ion has been studied using correlated ab initio methods. Geometric structures, vibration frequencies and intensities have been computed using the MP2 method and large basis sets. The cluster is linear with the structure ArHNN and Ar-H distance of 1.835 A. The complex is bound by approximat
The structure and vibrational frequencies of NH2NO
β Scribed by John A. Harrison; Robert G.A.R. Maclagan; Andrew R. Whyte
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 428 KB
- Volume
- 130
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The geometry of NHzNO has been optimised at the HF level of theory with basis sets ranging from STO-3G to 6-3 I 1 G**. The lowest-energy structure is not planar as previously predicted. The geometry of NHzNO was optimised at the MP2/6-3 lG** level of theory. The geometry of the planar structure was also optimised with various basis sets. The optimised structures and HF energies are reported for two conformers of NH,NO resulting from rotation about the NN bond. Harmonic vibrational frequencies for the four conformers are reported and scaled frequencies for the lowest energy structure given.
π SIMILAR VOLUMES
The coupled-cluster method with single and double excitations (CCSD) is used to investigate the equilibrium configuration and harmonic vibrational frequencies of NOr and NO?. Good agreement with experimental spectroscopic constants is obtained. The harmonic frequencies of the radical are considerabl
Several structures of C24 have been studied using different density functional methods. Using the B3LYP (Becke 3parameter Lee-Yang-Parr) method, fingerprint-quality infrared spectra have been computed for all species. The computed geometries differ substantially from those obtained at the SCF level
Zero kinetic energy photoelectron spectroscopy is combined with triple-resonant multiphoton absorption to obtain the first experimental measurement of the fundamental vibrational frequencica of isolated NOtI Analysis of observed vibrational structure yields values for the quadratic force constants i