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A series of new silver selenites with d(0)-TM cations

机译：一系列新的银色Selenites，D（0）-TM阳离子

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摘要

Systematic explorations of new phases in the Ag+-Ti4+/Zr4+/Nb5+/Ta5+-Se4+-O(F) system by hydrothermal syntheses or standard high temperature solid-state reactions resulted in four new mixed-metal silver selenites, namely, Ag3Ti3O3(SeO3)(4)F (1, P6(3)), Ag2ZrF2(SeO3)(2) (2, Cmca) and AgMO(SeO3)(2) (M = Nb, 3; Ta, 4) in the space group Cmcm. Ag3Ti3O3(SeO3)(4)F features an interesting [Ti3O3(SeO3)(4)](2-) 3D anionic framework composed of 1D chains of corner-sharing TiO6 octahedra which are further interconnected by tridentate bridging SeO32- anions, displaying 1D hexagonal channels of Ti6Se6 12-member rings (MRs) along the c-axis, filled by the Ag+ cations and isolated F- anions. More interestingly, it displays a moderate strong Second-Harmonic Generation (SHG) response about 2 times that of KH2PO4 (KDP). Compound 2 features a novel 1D [ZrF2(SeO3)(2)](2-) anionic chain composed of edge-sharing ZrO4F4 polyhedra in which two neighboring Zr4+ cations are further bridged by a pair of selenite anions. Compounds 3 and 4 are isostructural and their structures feature 1D anionic chains of [MO(SeO3)(2)] (M = Nb, Ta) which are separated by Ag+ cations, the 1D [MO(SeO3)(2)] (M = Nb, Ta) chain is formed by 1D chains of corner-sharing MO6 (M = Nb, Ta) octahedra in which two neighboring metal centers are also bridged by a pair of selenite anions. Other characterizations including thermal analyses, optical and luminescence property measurements have also been performed.
机译：的水热合成或标准高温固态反应在的Ag + -Ti4 + / ZR4 + / NB5 + / TA5 + -Se4 + -O（F）系统的新阶段系统的探索导致四个新的混合金属银亚硒，即Ag3Ti3O3（SeO3 ）（4）F（1，P6（3）），Ag2ZrF2（SeO3）（2）（2，CMCA）和AgMO（SeO3）（2）（M =铌，3;钽，4）空间群中CMCM 。 Ag3Ti3O3（SeO3）（4）的F一个有趣的功能[Ti3O3（SeO3）（4）]（2-）阴离子的三维框架共角TiO6八面体的一维链，其由三齿桥接SeO32-阴离子进一步互连组成，显示图1D沿着c轴Ti6Se6 12元环（MRS）的六边形通道，被Ag +阳离子填充和分离F-阴离子。更有趣的是，它显示有关该KH2PO4的2倍（KDP）中等强二次谐波产生（SHG）的反应。化合物2具有新颖1D [ZRF2（SeO3）（2）]（2-）边缘共享ZrO4F4多面体，其中两个相邻的Zr 4+的阳离子被进一步通过一对硒阴离子的桥接组成阴离子链。化合物3和4是同构的，其结构设有[MO（SeO3）（2）]其通过的Ag +阳离子，所述1D [MO（SeO3）（2）]（M分离（M =铌，钽）的1D阴离子链=铌，钽）链通过共角MO6（M =铌，钽）八面体的一条维链，其中两个相邻的金属中心也由一对硒阴离子的桥接形成。其它表征包括热分析，光学和发光特性的测量也已进行。

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  • 来源
    《RSC Advances》 |2016年第83期|共7页
  • 作者

    Qian Qian; Kong Fang; Mao Jiang-Gao;

  • 作者单位

    Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Peoples R China;

    Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Peoples R China;

    Chinese Acad Sci Fujian Inst Res Struct Matter State Key Lab Struct Chem Fuzhou 350002 Peoples R China;

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  • 中图分类 化学;
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