## Abstract The potential energy surface for the unimolecular decomposition of thiophenol (C~6~H~5~SH) is mapped out at two theoretical levels; BB1K/GTlarge and QCISD(T)/6β311+G(2d,p)//MP2/6β31G(d,p). Calculated reaction rate constants at the high pressure limit indicate that the major initial chan
Theoretical study on unimolecular reactions of formyl cyanide
β Scribed by Wei-hai Fang; Ruo-zhuang Liu; Xiao-zeng You
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 395 KB
- Volume
- 226
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The possible unimolecular reactions of formyl cyanide (CHOCN ) in its ground state have been investigated with ab initio method, at the level of MP4 (SDTQ ) /6-3 lG*//HF/6-3 1 G*. Our theoretical analysis indicated that in the case of unimolecular reaction pathways, CHOCN is rather stable at room temperature. However, at higher temperature this compound can decompose into HCN and CO. All of these are in agreement with the experimental identifications.
π SIMILAR VOLUMES
Optimized geometries and complete, scaled quadratic force fields of HCOCN and HCSCN have been determined at different theoretical levels (HF/4-21, HF/6-3lG\*\*; geometries also at MP2/6-3lG\*\* and MP2/6-31 lG\*\*). Frequencies calculated from the force fields confirm, with one exception, the assign
## Abstract The products of the rearrangement of ethylnitrene are ethylideneimine via a 1,2 hydrogen shift, __N__βmethyl methyleneimine via a 1,2 methyl shift, and the corresponding aziridine by cyclization. The three reactions have been studied by the semiempirical MNDO method. The charge transfer
## Abstract The decomposition pathways of chloromethanol have been studied by __ab initio__ calculation. Equilibriums and transition states have been optimized at the UMP2(full)/6β31G(d) level. The single point energies have been obtained at higher level of G3 (MP2). Four transition states and eigh