Abstract
Abstract The infrared and ultraviolet absorption spectra of toluene-d have been investigated for the first time in the regions 400 - 4000 cm−1 and 2350 −2750 A° respectively. The intense band at 2666.3 A°(37494 cm−1) in the u.v. vapour absorption spectrum has been identified as the o,o band and others have been interpreted in terms of the three (519,632 and 785 cm−1) ground state and the six (454,526,743,935,963 and 1180 cm−1 excited state fundamentals. The correlation of the various frequencies of the ground and excited states of toluene and toluene-d has been done. The observed isotopic shift for toluene-d is 14 cm−1.
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