Spontaneous chiral resolution, nonlinear optical and luminescence of eight-coordinate lanthanide(III) complexes

Hui-Fen Chen, Guo-Cong Guo, Ming-Sheng Wang, Gang Xu, Wen-Qiang Zou, Sheng-Ping Guo, Mei-Feng Wu, Jin-Shun Huang
2009 Dalton Transactions  
Materials and Methods: All chemicals were of reagent grade quality obtained from commercial sources and used without further purification. Elemental analyses of C, N, and H were carried out on a Vario EL III analyzer. Calcd (%) for C 32 H 12 Cl 3 DyN 12 : C, 46.12; H, 1.44; N, 20.16. Found: C, 45.47; H, 1.39; N, 19.83. Solid-state CD spectra were recorded with a JASCO J-810 spectropolarimeter at room temperature. For each CD measurement ca. 0.3 mg sample was taken to be mixed with 40 mg of an
more » ... en-dried and well ground KCl powder in an agate mortar and subsequent pressing like those used for IR spectroscopy. The baseline correction was performed against the spectrum of a pure KCl disk, prepared under the same conditions. The displayed absorption spectra result from subtraction of this spectrum of a standard KCl disk. The solid-state luminescence emission spectrum was recorded on a FluoroLog-3 spectrophotometer at room temperature with excitation and emission slits at 2.0 nm, increment 1.0 nm and integration time 0.1 s. Synthesis of [DyCl 3 (dicnq) 2 ] n (dicnq = 6,7-dicyanodipyridoquinoxaline) 1 and 1': A mixture of DyCl 3 ·6H 2 O (190 mg, 0.52 mmol), dicnq (282 mg, 0.1 mmol), acetonitrile (6 mL) and methanol (2 mL) was sealed into a 25-mL polytetrafluoroethylene-lined stainless Electronic Supplementary Information for Dalton Transactions This journal is
doi:10.1039/b917559h pmid:19921047 fatcat:7w2dxwr72naunpg7ikodqz7fdi