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Structural and vibrational studies of the molecular crystal formed by benzenamine with trifluoroacetic acid

Baran J., Barnes A. J., Barycki J., Pietraszko A., Ratajczak H.

Bulletin of the Polish Academy of Sciences. Chemistry

2001

Vol. 49, No. 2

115-124

The crystal structure of benzenamine-trifluoroacetic acid has been found to belong to the P2i space group of the monoclinic system, with Z = 8, o = 10.294(2) A, b = 9.126(2) A, c = 20.603(4) A, and Beta = 98.77(3)°. In the crystal the amine is protonated and the resulting benzenammonium and trifluoroacetate ions are interlinked by a network of N—H- • -O hydrogen bonds. The observed infrared spectrum is in accordance with such a structure.