Investigations on Growth, Optical and Thermal Properties of Sulphamic Acid Single Crystals

Abstract

Single crystals of sulphamic acid of 11 × 7 × 3 mm3dimension were successfully grown by slow evaporation technique. The crystal structure of grown crystals was confirmed by single crystal X-ray diffraction analysis. The presence of functional groups in the crystal lattice has been qualitatively determined by FT-IR and FT-Raman analyses. Theoretical group factor analysis predicts the possible modes of vibrations. The optical transmission spectroscopy (UV-Vis) clearly evidences the suitability of this material for optical application. The thermal behaviour of the crystal was studied by thermogravimetric (TG) and differential scanning calorimetric (DSC) studies. The nonlinear optical (NLO) characteristic of this material was explored by the second harmonic generation (SHG) conversion efficiency.

Synthesis, characterization, and thermal behavior of amidosulfonates of transition metals in air and nitrogen atmosphere

“…The main infrared absorption bands were associated with the N-H stretching, namely, a NH3 + broad band at 3400-3300 cm -1 , the N-H stretching as a weak band at 2873 cm -1 and the absorptions observed at 1533 and 1433 cm -1 due to symmetric stretching mode of NH3 + while at 1567 cm -1 is due to asymmetric mode. The SO3stretching vibration was observed in a 1065 cm -1 and at 685 cm -1 , the N-S stretching mode can be seen, all these absorptions agree with the literature [4][5][6][7][8][9][10][11][12][13][14] . The absence of that weak band of N-H stretching is an evidence that de coordination of the metal ions occurred by NH3 + group.…”

“…Squattrito and coworkers studied the layered structures of metal salts of sulfonic acid derivatives [10][11][12] . Jaishree et al 13 studied the optical and thermal properties of a monocrystal of amidosulfonic acid and reported the absorption bands in the infrared region. The main absorptions were attributed to the vibrational modes of the -SO3and -NH3 + group.…”

SHG in a centrosymmetric crystal – can it be possible?

“…As noted from the photographs in the reports, some compounds can be grown to the millimeter sizes (Amudha et al, 2015;Arumanayagam et al, 2015;Arunkumar & Kalainathan, 2020;Dhanya et al, 2011;Devi & Jananakumar, 2020;Ennaceur et al, 2018;Inbaseelan et al, 2016;Jaishree et al, 2014, Jebapriya et al, 2020Lakshmi et al, 2009;Loganayaki et al, 2011;Shibu Prasad et al, 2018;Santhakumari et al, 2011;Shakir et al, 2009;Sreevani et al, 2013;Thilagarajeswari et al, 2020;. The researchers did not carry out SHG substantiation on a large crystal; however, this is generally not a trivial exercise in laser upconversion measurements of crystals, in particular due to the critical requirements of surface smoothness and proper phase matching.…”