It is shown that phosphorescent m~cro~vave double resonance (PRfDR) an detect deviations from Czv, R,h or Dz symmetry. This is carried out by examining the radiative properties of the zero field level which should be\*"dsrk" for molecules with these symmetries. The results show that in rz-hesone sol
The molecular geometry of pyrazine in the lowest triplet state from PMDR spectroscopy
β Scribed by A.A. Gwaiz; M.A. El-Sayed
- Book ID
- 103009994
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- English
- Weight
- 433 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The triplet spin sublevel origins of the bands in the phosphorescke of pyrazine in a paradioxane host are assigned using phosphorescence-microwave double resonance techniques. The assignments cannot be interpreted in terms of a Dzh structure for the molecule in the triplet state, and indicate a trip!et state molecule symmetrr Of Czh or lower.
π SIMILAR VOLUMES
Phosphorescence-microwave double resonance (PMDR) techniques are wed and the zero-field (zf) origin of the 0,O band of the phosphorescence of benzene-& in benzene-& a.t 1.6% is determined to be the TY level. This is cuns;tent with a 3B1u assignment for a distorted D2h benzene in its triplet state an
## Abstract The geometrical parameters of the ammonia molecule in the lowestβlying triplet state have been estimated by means of the SCF method and by making an extrapolation to take into account electron correlation effects. The planar configuration has been obtained as the most probable geometric