4-hydroxy-2,5-dimethylphenyl benzophenone: conformational stability, FT-IR and Raman investigation - Viana, Rommel Bezerra; Santos, Evania Danieli Andrade; Valencia, Leidy J.; Cavalcante, Rivelino M; Costa, Edson Barbosa da; Moreno-Fuquen, Rodolfo; Silva, Alberico Borges Ferreira da (Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2013)