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Crystal Research and Technology |
Cryst. Res. Technol. 42, 522 (2007) - Abstract -
Synthesis, crystal structure and third order nonlinear optical properties of bis(tetra-n-propylammonium) bis(2-thioxo-1,3-dithiole-4,5-dithiolato)cuprate(II)
W. F. Guo, X. B. Sun*, J. Sun, W. T. Yu, X. Q. Wang, G. H. Zhang, and D. Xu
State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China
*Department of Optics, Shandong University, Jinan 250100, China
| Keywords | bis(dmit) complexes, crystal growth, X-ray diffraction, optical properties |
| PACS | 61.66.Hq |
| DOI | 10.1002/crat.200610859 |
A novel bis (dmit) complex of copper (II), [(C3H7)4N]2[Cu(dmit)2] (1), where dmit is 2-thioxo-1,3-dithiole-4,5-dithiolate, was prepared and structurally characterized by X-ray single crystal diffraction. The copper (II) atom is tetracoordinated by four dmit S atoms, forming a nearly square planar arrangement. The [Cu(dmit)2]2- anions and the [(C3H7)4N]+ counter-cations form a three-dimensional solid-state structure by C–H…S hydrogen bonds. The third-order nonlinear optical properties of the complex were determined by picosecond Z-scan technique at a wavelength of 1064 nm. The results indicate the compound exhibits reverse saturation absorption and self-defocusing performance. The molecular second-order hyperpolarizability is calculated to be as high as (1.8±0.2)x10-30 esu.
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