Issue 5, 2022

Two new tellurite halides with cationic layers: syntheses, structures, and characterizations of CdPb2Te3O8Cl2 and Cd13Pb8Te14O42Cl14

Abstract

Two new tellurite halides, CdPb2Te3O8Cl2 and Cd13Pb8Te14O42Cl14, with cationic layer structures have been synthesized by high-temperature solution method. CdPb2Te3O8Cl2 crystallizes in the noncentrosymmetric Aba2 space group, built by [CdPb2Te3O8] cationic layers with Cl atoms. Cd13Pb8Te14O42Cl14 crystallizes in the centrosymmetric P[1 with combining macron] space group, constructed by [Cd12Pb4Te8O53] layers, and [Cd7Cl6] octahedra as well as Cl atoms filled the interlayers. In the two compounds, four unique oxyhalide mixed anionic groups, [CdO6Cl], [PbO3Cl4], [PbO4Cl4] and [PbO3Cl5], were discovered. The experimental bands are ∼3.89 eV for CdPb2Te3O8Cl2 and ∼3.78 eV for Cd13Pb8Te14O42Cl14. Furthermore, the powder second harmonic generation (SHG) response of CdPb2Te3O8Cl2 is about 0.2 × AgGaS2 at 2029 nm (× 1.1 KDP@1064 nm), which mainly originates from the triangular [TeO3] and distorted [TeO4] units. The results give an insight into the design of new IR optical materials by combining the heavy metal oxyhalide groups with the Te–O units.

Graphical abstract: Two new tellurite halides with cationic layers: syntheses, structures, and characterizations of CdPb2Te3O8Cl2 and Cd13Pb8Te14O42Cl14

Supplementary files

Article information

Article type
Research Article
Submitted
04 Oct 2021
Accepted
18 Jan 2022
First published
21 Jan 2022

Inorg. Chem. Front., 2022,9, 1023-1030

Two new tellurite halides with cationic layers: syntheses, structures, and characterizations of CdPb2Te3O8Cl2 and Cd13Pb8Te14O42Cl14

C. Bai, Y. Chu, J. Zhou, L. Wang, L. Luo, S. Pan and J. Li, Inorg. Chem. Front., 2022, 9, 1023 DOI: 10.1039/D1QI01251G

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