Study of vibrations by Raman spectroscopy low frequencies of the phase transition in pyridinium picrate (C6H2N3O7)-.(C5H6N)+

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AZIZI Abdelkader*
Department of Physics, Faculty of M. I. S. M, 08 May 1945 University, BP 401, Guelma 24000, Algeria.
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MEDDOUR Athmane
Department of Physics, Faculty of M. I. S. M, 08 May 1945 University, BP 401, Guelma 24000, Algeria.
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References

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Varsanyi G (1974). Assignments of vibrational spectra of seven hundred benzene derivatives, Wiley: New York

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