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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)
Author(s) -
Guo W. F.,
Sun X. B.,
Sun J.,
Yu W. T.,
Wang X. Q.,
Zhang G. H.,
Xu D.
Publication year - 2007
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200610859
Subject(s) - hyperpolarizability , chemistry , crystallography , cuprate , crystal structure , hydrogen bond , copper , nonlinear optical , picosecond , single crystal , diffraction , molecule , materials science , nonlinear system , laser , optics , doping , organic chemistry , physics , quantum mechanics , polarizability , optoelectronics
A novel bis (dmit) complex of copper (II), [(C 3 H 7 ) 4 N] 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 [(C 3 H 7 ) 4 N] + 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 γ is calculated to be as high as (1.8±0.2)×10 ‐30 esu. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)