Synthesis, growth, structural, physicochemical, linear, and nonlinear optical properties of new hybrid [2(C10H20O5) Ba] [Co (SCN)4] single crystal

A novel organometallic single crystal of Bis(15-Crown-5-k5O) barium tetrakis (isothiocynato-kN) cobalt (II) [BCBCTC] was synthesized by slow evaporation solution growth technique at ambient temperature. The grown title compound has been harvested with a dimension of 8 × 5 × 2 mm3 during a period of 10–15 days. The lattice cell parameters, crystal symmetry, and structure were investigated by single-crystal X-ray diffraction technique. Additionally, the different facets of various crystal planes were indexed by powder X-ray diffraction patterns. The result reveals that the title compound belongs to orthorhombic crystal system with a space group of Pnma. The spectroscopic properties of grown crystal were analyzed by FTIR, micro-Raman, and UV–optical spectra. From the UV–optical absorbance spectrum was clearly shown that the cut-off wavelength of the BCBCTC is ~ 369 nm, and optical bandgap is ~ 3.36 eV found to be Tauc’s relation. Moreover, the grown crystal surface morphology, reverse growth rate, and presence of chemical compositions were further verified by FE-SEM, EDAX, and etching studies. The thermal stability and mechanical property were calculated by TG-DSC and Vickers’s hardness tester. The various dielectric properties such as dielectric constant (εr) and dielectric loss (tan δ) of the grown title compound were studied at a function of temperature, and results are discussed. Furthermore, the linear and nonlinear coefficients such as nonlinear refractive index (n2), nonlinear absorption (β), third-order susceptibility (χ3), and then hyper polarizability (γ) were measured by Z-Scan studies.