Synthesis, growth, structure, spectroscopic, and physicochemical properties of 18-Crown-6-ether barium (II) bisthiocyanate monohydrate single crystal: BCBT

Abstract

We reported the bulk size with a dimension of 18×5×5 mm3 single-crystals of 18C6(Ba)(SCN)2.H2O [18-crown-6-ether barium(II) bisthiocyanate monohydrate]; abbreviated as BCBT, have been grown from an aqueous solution via slow evaporation solvent technique(SEST). The grown pristine single-crystals have characterized by single crystal X-ray diffraction (XRD), FT-IR, micro-Raman, and UV-Vis-NIR spectral studies. BCBT crystallizes in a monoclinic with a non-centrosymeetric space group of P21 crystal system. Additionally, the chemical etching studies showed that the reverse crystal growth rates of BCBT. The FT-IR studies confirmed the present of functional groups in the grown single-crystal of BCBT. Interestingly, the CN stretching observed at 2012 cm−1 is clearly shown the N-bonded nature of SCN with Ba2+. Moreover, the micro-Raman spectrum is used to further additional confirmation of BCBT single-crystal. In the entire visible region, the BCBT crystal has found to be wide (UV-Vis-IR) optically absorption from 231 to 800 nm, which is suitable for optoelectronic applications. The laser damage threshold measurements on the BCBT crystal with Q-switched Nd: YAG laser of fundamental wavelength 1064 nm (QUANTA RAY Model LAB – 170 - 10, pulse width 10 ns and repetition rate 6 Hz used as the source of light for laser damage threshold experiment. Moreover, the thermal stability of grown BCBT is stable up to 289 °C. From the results reveal that the sample possess admirable thermal stability compared to other IOPS series such as CLTC (171°C), and ACCTC (241°C).

Synthesis, Growth, Structural and Physicochemical Properties of a Novel Linear and Nonlinear UV-Optical Single-Crystal for Photonic Applications: [Ba(C14H20O5)2.Co(SCN)4]

“…Additionally, the lower ranges 294 cm −1 , 104 cm −1 and 92 cm −1 are due to the existence of BaO groups. 36,37 UV-Visible NIR spectral analysis.-The UV-Vis-NIR spectroscopic analysis is a non-destructive procedure and it is utilized to compute the optical properties such as transmittance, optical absorption and refractive index ( ) n 0 etc The optical properties of grown single-crystal were examined by UV-Vis. spectrometer (SHIMADZU, UV 3600 PLUS) in the wavelength range of 200 to 2000 nm.…”

“…In addition to this, the organometallic-based metal thiocyanate ligand (SCN) − has been shown to increase the molecular hyperpolarizability by transferring electron density between the metal and the ligand [M-L] or the ligand to the metal [L-M]. [10][11][12][13] Organic ligand-based crystalline materials are more dominant in NLO effects. The saturable light absorption is an important nonlinear optical property of materials where the transmission increases with increasing light intensity.…”