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Issue 8, 2018
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Ba2ZnSc(BO3)3 and Ba4Zn5Sc2(BO3)8: first examples of borates in the Zn–Sc–B–O system featuring special structure configurations

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Abstract

As the first reported examples of borates in the Zn–Sc–B–O system, Ba2ZnSc(BO3)3 and Ba4Zn5Sc2(BO3)8 were synthesized through a high-temperature solution method. The structure of Ba2ZnSc(BO3)3 can be described as ZnO4 tetrahedra connecting ScO6 octahedra to form a [ZnScO9]13− dimer, which further bonds with seven BO3 triangles to form a 2[ZnSc(BO3)3] layer, and the Ba atoms distribute in the voids between the layers. In contrast, in Ba4Zn5Sc2(BO3)8, Zn–O chains composed of 4- and 6-coordinated Zn atoms link with Sc2O8 dimers to form a Zn–Sc–O layer, and the BO3 triangles and Ba atoms fill in the voids between the layers. Interestingly, the special [Zn2(BO3)6]14− cluster is found in Ba2ZnSc(BO3)3, which is different from the 2D layers or 3D frameworks of the Zn–B–O configurations in other zincoborates. Moreover, the lowest-coordinated ScO5 polyhedra, as well as the coexistence of two types of ZnOn units (n = 4 and 6), are observed for the first time in Ba4Zn5Sc2(BO3)8. These fascinating results can promote the design of novel borates with BO3 units and enrich the borate structure chemistry.

Graphical abstract: Ba2ZnSc(BO3)3 and Ba4Zn5Sc2(BO3)8: first examples of borates in the Zn–Sc–B–O system featuring special structure configurations

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Publication details

The article was received on 27 Mar 2018, accepted on 17 Apr 2018 and first published on 17 Apr 2018


Article type: Research Article
DOI: 10.1039/C8QI00275D
Citation: Inorg. Chem. Front., 2018,5, 1787-1794
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    Ba2ZnSc(BO3)3 and Ba4Zn5Sc2(BO3)8: first examples of borates in the Zn–Sc–B–O system featuring special structure configurations

    Y. Chen, M. Zhang, C. Hu, Z. Yang and S. Pan, Inorg. Chem. Front., 2018, 5, 1787
    DOI: 10.1039/C8QI00275D

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