Ab initio molecular orbital studies of CH2O2+2 isomers
β Scribed by Wolfram Koch; Helmut Schwarz
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 288 KB
- Volume
- 125
- Category
- Article
- ISSN
- 0009-2614
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π SIMILAR VOLUMES
By means of a geometry optimization at the MP2/6-3 lG(d) level, the CH302 radicals have been found to exist in five isomeric forms. In order of decreasing stabilities, they are: HO-CH-OH ( ) > 0-CH,-OH (2) > CH&-0 (3) > CH2-O-OH (4) > CHI OH-O (5). On the other hand, there are six CHpO$ isomers: HO-
Kcccivud 4 Ocrobcr I97 3 Gaussian orbital calculations 01. the ESR coupling consrunts in the PI-2 radical arc prescnred, in cscellcnt agree mcnt with experiment.
than the C-O bond length of CH O in the gas phase by 0.044 A at the 3 MP2raug-cc-pVDZ level of theory. The structure of the CH S y moiety in
The anomalously low vertical excitation energy from the ground state to the lowest excited triplet state (T, ) is predicted for SiH2FCH=CH2 (4.6 eV) by the quantum chemical calculation using ab initio MP3/3-21 +G\*//HF/3-21 +G\* molecular orbital methods. The steric effect of the fluorine which alte