Abstract
Abstract The i.r. spectra of N-phenylphthalimide and 15N-phenylphthalimide have been measured in 4000–100 cm−1 frequency range as KBr and polyethylene pellets and as chloroform solutions. The Raman spectra (4000–50) cm−1 of microcrystalline powder of the of the same compounds have also been investigated. A detailed assignment of most of the observed frequencies has been proposed on the basis of the group vibrational concept, isotopic shift data and analogies with the spectra of related molecules. Some literature data have been discussed and some frequencies are reassigned.
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