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Butterfly and Nest‐Shaped Tp*‐W‐Cu‐S Cluster Monomers and Dimers with Hexamethylenetetramine as Ligand: Anion‐Dependent Structures and Nonlinear Optical Properties
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2020-10-24 , DOI: 10.1002/cjoc.202000497
Quan Liu 1 , Mingjie Lu 1 , Lice Yu 1 , Yinglin Song 2 , Jianping Lang 3
Affiliation  

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 are either 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 found to dictate the structures (2/3 versus 4), and the presence/absence of halogen also affects the utilization of coordinate site of HMT (4 versus 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 selected for the third‐order nonlinear optical (NLO) property investigations. The NLO measurement results suggest that the hyperpolarizability value (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 cluster‐based molecular entities, rendering 5 a promising NLO‐active material.image

中文翻译:

六亚甲基四胺为配体的蝶形和巢形Tp * -W-Cu-S簇单体和二聚体:阴离子依赖性结构和非线性光学性质

[Et 4 N] [Tp * WS 3 ](1)与CuX(Tp * =氢化三(3,5-二甲基吡唑-1-基)硼酸盐; X = Cl,Br和I)或[Cu( MeCN)4 ] [PF 6 ]在四位配体六亚甲基四胺(HMT)的存在下,提供了由四种基于簇的化合物组成的阵列,这些化合物为中性或阴离子。这些化合物包括[Tp * WS 3 Cu 3 Cl 2(HMT)](2,单体,中性),[Tp * WS 3 Cu 3 Br 2(HMT)](3,单体,中性),[Tp * WS 3 Cu 3 I 1.5(HMT)] 2 I(4,二聚体,阴离子)和[Tp * WS 3 Cu2(HMT)] 2(PF 62(5,二聚体,阴离子)。发现卤素的大小决定了结构(2/34),卤素的存在/不存在还通过在HMT中创建更多可用的Cu(I)位来影响HMT配位点的利用(45)。在5的情况下。2–5的结构还通过元素分析,傅立叶变换红外(FT-IR)光谱和紫外可见(UV-Vis)光谱进行表征,其中5的二聚体结构也被选择用于三阶非线性光学(NLO)特性研究。NLO测量结果表明超极化率值(γ)的5)反映了其作为纯净材料的NLO特性,具有2.12×10 -30 esu的特征,可与其他基于W / Cu / S团簇的分子实体相媲美,使5成为一种很有希望的NLO活性材料。图像
更新日期:2020-10-24
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