Crystal structure and the role of cation group factor In the third-order nonlinear optical properties of cadmium complexes constructed by 1,3-dithiole-2-thione-4,5-dithiolato ligand

摘要

A cadmium complex bis(benzyltriethylammonium) bis(1,3-dithiole-2-thione-4,5-dithiolato)-cadmium(ll) ((TEBA)2[Cd(DMIT)2]) has been synthesized and its crystal structure has been determined by means of X-ray single-crystal diffraction. The central cadmium (II) ion coordinates with two DMIT, which constructed a distorted tetrahedron environment. Its third-order nonlinear optical properties have been studied using Z-scan technique with 20 ps pulses at wavelength 1064 nm. Its third-order nonlinear susceptibility χ~((3)) value was determined to be 1.24 x 10~(-19)m~2V~(-2), the figure of merit, χ~((3))/α0, was estimated to be 2.64 x 10~(-20)m~3V~(-2).