Bond Angles and Dipole Moments of Excited State Molecules

Bond Angles and Dipole Moments of Excited State Molecules 

Because excited triplet states are less likely to have their unpaired electrons on the same atoms than are singlet states (see reference 24), the triplet states tend to have biradicaloid character. For a more detailed discussion of the acid-base properties of photoexcited organic molecules, including carbon acids and carbon bases, see Wan, P. Shukla, D. Chem. Rev. 1993, 93, 571. 

For a discussion of the dipole moments of larger molecules in the excited state, see Liptay, W. Excited States 1974, 1,129, 

Conformational changes can also result from photoexcitation. Tomer, J. L. Spangler, L. H. Pratt, D. W.. Am. Chem. Soc. 1988,110,1615 reported different conformational preferences for the methyl group in Sj and Ti acetophenone. 

TABLE 12.4 Physical Properties of Formaldehyde Excited States  

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