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Combining Solid-state and Solution-based Techniques: Synthesis and Reactivity of Chalcogenidoplumbates(II or IV)
Published on: December 29, 2016
New mixed metal selenites and tellurites containing Pd2+ ions in a square planar geometry
Su-Yun Zhang1, Chun-Li Hu, Jiang-Gao Mao
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, P. R. China.
Abstract:
Four novel mixed metal selenites or tellurites containing PdO(4) squares, namely, BaPd(SeO(3))(2), Bi(2)Pd(SeO(3))(4), and Pb(2)Pd(QO(3))(2)Cl(2) (Q = Se, Te), have been prepared and structurally characterized by single crystal X-ray diffraction analyses. These compounds exhibit three different types of anionic structures. BaPd(SeO(3))(2) contains one-dimensional (1D) [Pd(SeO(3))(2)](2-) anionic chains composed of PdO(4) units linked by SeO(3)(2-) groups in a bidentate bridging fashion. Bi(2)Pd(SeO(3))(4) exhibits a complicated 3D architecture constructed by [Bi(SeO(3))](+) and [Pd(SeO(3))(2)](2-) layers that are alternating along the a-axis. The [Pd(SeO(3))(2)](2-) layers are composed of Pd(2+) ions bridged by SeO(3)(2-) anions in a bidentate fashion. Pb(2)Pd(QO(3))(2)Cl(2) (Q = Se, Te) features zero-dimensional (0D) [Pd(QO(3))Cl(2)](4-) (Q = Se, Te) anionic clusters, which are further bridged by Pb(2+) cations into a 3D network. The results of optical diffuse-reflectance spectrum measurements and band structure calculations based on DFT methods indicate that all the compounds are wide-band-gap semiconductors.
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