SYMMETRY AND GEOMETRY OF THE 1ST 2 EXCITED SINGLET-STATES OF DIMETHYLNITROSOAMINE STUDIED BY VECTOR CORRELATIONS Academic Article uri icon

abstract

  • A study of the geometry and symmetry of two different excited potential surfaces of the same molecule is demonstrated for the first time by analyzing the alignment and Λ doubling of the NO fragment resulting from the photodissociation of dimethylnitrosoamine irradiated at 363.5 nm,[S 1 (n π*)← S 0], and 250 nm,[S 2 (ππ*)← S 0]. The values obtained for the alignment and Λ doubling indicate that (1) the fragmentation process is fast in both cases;(2) there is some planarity in the fragmentation process in both cases;(3) at 250 nm the transition dipole moment lies in the frame of the molecule, while at 363.5 nm it is perpendicular to the frame of the molecule;(4) the first excited state has an A 'symmetry and the second excited state has an A'symmetry.

publication date

  • January 1, 1987