Acta Crystallographica Section B

Structural Science

Volume 57, Part 6 (December 2001)

research papers

Acta Cryst. (2001). B57, 828-832 [ doi:10.1107/S0108768101009880 ]

Synthesis, structure, thermal and non-linear optical properties of L-argininium hydrogen selenite

E. de Matos Gomes, E. Nogueira, I. Fernandes, M. Belsley, J. A. Paixão, A. Matos Beja, M. Ramos Silva, J. Martín-Gil, F. Martín-Gil and J. F. Mano

Abstract: L-Argininium hydrogen selenite (C₆H₁₅N₄O₂HSeO₃) is a new semiorganic compound of the hydrogen selenite family with non-linear optical properties. The crystal lattice is monoclinic with unit-cell parameters a = 22.493 (5), b = 5.1624 (13), c = 9.730 (4) Å, [beta] = 95.68 (3)°, V = 1124.3 (6) Å³, Z = 4, space group C2. Second-harmonic generation measurements performed on powder samples, using a Q-switched Nd:Yag laser ( [lambda] = 1064 nm), showed the second-harmonic power to be about twice that of urea. Differential scanning calorimetry measurements revealed the existence of a phase transition with onset at 289 K.

Keywords: synthesis; thermal properties; optical properties; hydrogen selenites.