【摘 要】
：
The assembly of[Et4N][Tp*WS3](1) with CuX (Tp* =hydridotris(3,5-dimethylpyrazol-1-yl)borate;X =Cl,Br,and I) or[Cu(MeCN)4][PF6]in the presence of tetratopic liga
【机 构】
：
College of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China;Sc
论文部分内容阅读
The assembly of[Et4N][Tp*WS3](1) with CuX (Tp* =hydridotris(3,5-dimethylpyrazol-1-yl)borate;X =Cl,Br,and I) or[Cu(MeCN)4][PF6]in the presence of tetratopic ligand hexamethylenetetramine (HMT) afforded an array of four cluster-based compounds,which areeither neutral or anionic.These compounds include[Tp*WS3Cu3Cl2(HMT)](2,monomer,neutral),[Tp*WS3Cu3Br2(HMT)](3,monomer,neutral),[Tp*WS3Cu3I1.5(HMT)]2I (4,dimer,anionic),and[Tp*WS3Cu2(HMT)]2(PF6)2 (5,dimer,anionic).The size of the halogen is foundto dictate the structures (2/3 versus 4),and the presence/absence of halogen also affects the utilization of coordinate site of HMT (4versus 5) by creating more available Cu(Ⅰ) site in the case of 5.The structures of 2-5 are also characterized using elemental analysis,Fourier-transform infrared (FT-IR) spectra,and ultraviolet-visible (UV-Vis) spectroscopy,with the dimeric structure of 5 also selectedfor the third-order nonlinear optical (NLO) property investigations.The NLO measurement results suggest that the hyperpolarizabilityvalue (γ) of 5,reflecting its NLO properties as a neat material,features 2.12×10-30 esu,and it is comparable to other W/Cu/S clus-ter-based molecular entities,rendering 5 a promising NLO-active material.
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