Abstract
Excited state distortions of W(CO) 5pyridine, W(CO) 5piperidine, Mo 2(CF 3CO 2) 4, and K 3Cr(CN) 5NO are calculated from emission spectra and pre-resonance Raman spectra by using the time-dependent theory of molecular spectroscopy. The time-dependent theory is described and the connections between electronic spectra and pre-resonance Raman spectra are discussed. Electronic emission and/or absorption spectra of the above compounds at 10°K are reported. The electronic spectra are calculated from the pre-resonance Raman determined intensities and frequencies. The connections between the excited state bond length distortions and the photochemical reactivity of the molecules is discussed. The “Missing Mode Effect” or MIME effect is explained.
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