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作 者:林宏艳[1] 孙俊俊[1] 王青林[1] 曾凌[1] 刘国成[1] 林佳凤
出 处:《应用化学》2017年第6期693-699,共7页Chinese Journal of Applied Chemistry
基 金:国家自然科学基金资助项目(21501013;21401010)~~
摘 要:选择柔性的双吡啶双酰胺配体N,N'-双(3-吡啶甲酰胺基)-1,2-乙烷(3-bpye)、钼酸铵和氯化锌在水热条件下自组装制备了一个基于一维[H_2Mo_4O_(14)]_n^(2n-)链的三维锌配合物[Zn(3-bpye)(H_2Mo_4O_(14))(H_2O)_2],并通过元素分析、红外光谱、热重分析等技术手段研究了配合物的结构,并利用X射线单晶衍射分析进行了晶体结构表征。结构解析揭示标题配合物是三斜晶系,P-1空间群,晶胞参数a=0.61310(3)nm,b=1.04750(6)nm,c=1.06540(6)nm,α=78.5540(10)°,β=77.5350(10)°,γ=89.9050(10)°,V=0.65420(6)nm^3,M_r=981.47,D_c=2.491 g/cm^3,Z=1,F(000)=468,R_1=0.0290,ωR_2=0.1068。标题配合物中,金属锌离子连接一维[H_2Mo_4O_(14)]_n^(2n-)链形成一种二维无机双金属层[Zn(H_2Mo_4O_(14))]_n,相邻的层间又通过双齿配体3-bpye连接形成三维CdSO_4拓扑的骨架结构。配合物表现出强的荧光发射特性,而且其在紫外光照下对亚甲基蓝和罗丹明B均有明显的催化降解活性。A three-dimensional (3D) zinc compound [Zn(3-bpye) (H2Mo4O14) (H2O)2] ( 3-bpye = N, N'-bis ( 3-pyridinecarboxamide ) -1,2-ethane ) based on one-dimensional ( 1 D )[H2Mo4O14]n2n- chain was hydrothermally prepared by bis (pyridyl)-bis (amide) ligand, ammonium molybdate and zinc chloride. Structural analysis by element analysis, indrared (IR) spectroscopy, thermogravity (TG) and X-ray single- crystal diffraction(XRD) reveal that the title compound is triclinic system with P-1 space group. Its cell parameters are a=0.61310(3) nm, b=1.04750(6) nm, c=1.06540(6) nm, α=78.5540(10)°, β=77.5350(10)°, γ =89.9050(10)°, V=0.65420(6)nm3, Mr =981.47, Do =2.491 g/cm3, Z=1, F(000) =468, R1 =0.0290, toR2 =0. 1068. In the title compound, 1D [n2Mo4014]2nn- chains are linked by the Zn2+ ions to form 2D inorganic bimetallic layer [ Zn( H2Mo4o14 ) ]n. The adjacent 2D layers are further connected by the bridging ligands 3-bpye to construct 3D framework with CdSO4 topology. This zinc compound possesses strong fluorescence emission. Moreover, this compound shows remarkable photocatalytic activities for the degradation of methylene blue and rhodamine B under ultraviolet irradiation. CCDC: 1493115.
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