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Infrared and Raman Spectra of Phthalimide-15N-H and Phthalimide-15N-D

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A study of the infrared and Raman spectra of previously synthesized phthalimide-15N-H and phthalimide-15N-D has been carried out. With the new data obtained, the vibrational spectra of the phthalimide molecule in a C 2v * symmetry has been reassigned, but taking into account that the molecule in the solid state forms dimers bonded by intermolecular hydrogen bonds; these dimers have a C i symmetry. On the other hand, a semi-empiric calculation of the force fields of this molecule has been carried out by the MINDO/3-FORCE method, which required a prior optimization of the molecular geometry; the force field was transformed to the space of internal coordinates.

Keywords: Assignments; Force field; Infrared; Nitrogen-15; Phthalimide; Raman spectroscopy

Document Type: Research Article


Affiliations: Department of Physical Chemistry, Faculty of Sciences, 29071 Málaga, Spain

Publication date: January 1, 1989

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