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Singlet stale

This dialog box also contains the option for specifying that the molecular system ism the first excited singlet stale (Next lowest or the Lowest electronic state. [Pg.119]

Free carbenes exist in both triplet and singlet stales but those containing a heteroatom (e.g., O or N), as found in Fischer carbenes, tend to be of the latter variety. Thus the free ligand may be represented as follows ... [Pg.332]

For reasons discussed in the next section, the stationary states of two-electron atoms represented by symmetric and by antisymmetric positional wave functions are called singlet stales and triplet states, respectively. The triplet state from a given configuration is in general more stable than the singlet state. [Pg.214]

Figure 13.21. Electron configuration and singlet stales taking into account electronic correlation effects (Cl). Also indicated are experimentally determined transition energies for a2T in solution [38],... Figure 13.21. Electron configuration and singlet stales taking into account electronic correlation effects (Cl). Also indicated are experimentally determined transition energies for a2T in solution [38],...
Aromatic nitriles are strong oxidants in their excited states (see Table I). Since they fluoresce strongly, the involvement of the singlet states can be easily proved by application of fluorescence quenching techniques. In all of the tested cases, it has been found that the Stern Volmer constant obtained from fluorescence analysis and that obtained from the double reciprocal plots of reaction quantum yield vs. quencher concentration are nearly equal, thus proving that the singlet stale is actually involved In the photochemical reaction. Actually it has been observed that a AG < 0 and polar solvents are necessary (although not sufficient, see Section 3) conditions for the photochemical proc-... [Pg.107]

We may ask Why is thisT After all, we consider a singlet stale, hence the spin projections are opposite. We will not find the situation with parallel spin projections. But this is nothing to worry about. If, in fact, we are right, then we wiU get 0 as the density of the respective conditional probability. Let us see whether it will really be so. This is ensured by the singlet form of the spin part of the function. [Pg.578]


See other pages where Singlet stale is mentioned: [Pg.46]    [Pg.47]    [Pg.332]    [Pg.20]    [Pg.65]    [Pg.14]    [Pg.432]    [Pg.145]    [Pg.321]    [Pg.65]    [Pg.85]    [Pg.117]    [Pg.216]    [Pg.401]    [Pg.401]    [Pg.401]    [Pg.402]    [Pg.404]    [Pg.128]    [Pg.128]    [Pg.33]    [Pg.447]    [Pg.420]    [Pg.116]    [Pg.208]    [Pg.741]    [Pg.185]   
See also in sourсe #XX -- [ Pg.41 , Pg.216 , Pg.411 ]




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