%0 Generic %A Ye, Qiong %A Li, Yong-Hua %A Song, Yu-Mei %A Huang, Xue-Feng %A Xiong, Ren-Gen %A Xue, Ziling %D 2005 %T A Second-Order Nonlinear Optical Material Prepared through In Situ Hydrothermal Ligand Synthesis %U https://acs.figshare.com/articles/dataset/A_Second_Order_Nonlinear_Optical_Material_Prepared_through_In_Situ_Hydrothermal_Ligand_Synthesis/3286114 %R 10.1021/ic0500098.s001 %2 https://acs.figshare.com/ndownloader/files/5123851 %K compound %K PO %K Situ Hydrothermal Ligand Synthesis %K 2 D square grid network %K 2 Zn %K NH %K noncentrosymmetric space groups %K KDP %K CN %K emission %K KH %K SHG effect %K nm %X The in situ hydrothermal reactions of ZnCl2 with benzonitrile, 2-amino-5-cyanopyridine, and trans-2,3-dihydro-2-(4‘ ‘-cyanophenyl)-benzo[e]indole in the presence of NaN3 and water afford two 3D-diamond-like networks, (CN4−C6H5)2Zn (1) and (NH2−C5H3N−CN4)2Zn (2), and one 2D square grid network, [(CN4−C6H4−C12H7N−C5H4N)2Zn]·1.5H2O (3), in which these ligands gradually involve a noncenter-A−D (acceptor−donor) system, a one-center-A−D system, and a two-center-A−D system, respectively. All three compounds crystallize in noncentrosymmetric space groups (I4̄2d for 1 and 2 and Fdd2 for 3) and display strong second harmonic generation (SHG) responses. Among the three new complexes, 3 shows the largest SHG effect, which is about 50 and 500 times that of urea and KDP (KH2PO4), respectively. The two-center-A−D system (multicenter push−pull electronic effect) in 3 may be responsible for it having the largest SHG effect. Interestingly, the three compounds exhibit strong fluorescent emissions at different wavelengths, 1 and 2 with blue fluorescent emissions at 390 and 415 nm and 3 with yellow-green fluorescent emissions at 495 and 532 nm. %I ACS Publications