Structure and vibrational spectra of l-alanine l-alaninium picrate monohydrate

Preparation, crystal and molecular structure as well as vibrational spectra of the crystal l-alanine l-alaninium picrate monohydrate are described. The title crystal is monoclinic, space group P21. The asymmetric unit contains one dimeric (l-Ala⋯l-Ala+) cation, one picrate anion and a water molecule. The O⋯O distance in the dimeric cation is equal to 2.553(2) Å. The IR and Raman spectra are interpreted based on the structure.