Crystal structures and vibrational spectra of L-argininium(2+) bis(tetrafluoroborate) and L-argininium(2+) bis(perchlorate).

In the present work crystal structures of (L-ArgH)(BF) (I) and (L-ArgH)(ClO) (II) isostructural salts have been determined. They crystallize in triclinic system with space group P1 and Z = 1. Structure features of the (I) and (II) were compared with respective data of previously known (L-ArgH)(BF) and (L-ArgH)(ClO) salts with singly charged L-argininium(+) cation.

Crystal structure, thermal and spectral studies and growth of nonlinear optical L-lysinium fluoride crystal.

In current study properties of L-lysinium fluoride (L-Lys⋅HF) are determined by X-ray diffraction, infrared and Raman spectroscopy, SHG and by UV-vis transmittance spectrum measurement. L-Lys⋅HF (C6H15FN2O2), crystallizes in a monoclinic system with space group P21, a=5.464(1)Å, b=7.