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Issue 15, 2017
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The structural diversity of halogen-centered secondary building units: two new mixed-metal borate halides with deep-ultraviolet cut-off edges

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Abstract

Two new mixed-metal borate halides, namely, NaMg2Ba7B14O28F5 (I) and NaBa4B10O18BrF2 (II), were synthesized using the high-temperature flux method. Both structures were characterized by single-crystal X-ray diffraction, and their structures are shown to feature complicated three dimensional (3D) networks with different types of halogen-centered secondary building units (SBUs). Specifically, compound I contains three spatial fluorine-centered SBUs F(1)Ba4Mg2, F(2)Ba(Na)Ba3Mg, and F(3)Ba(Na)Ba2Mg, while compound II exhibits spatial FBa3Na and planar BrBa4 fluorine- or bromine-centered SBUs. Furthermore, four categories of halogen-centered SBUs were investigated among all the 173 available anhydrous halogen-containing borates to elaborate the role of halogen atoms to enrich the structural diversity of borates. What's more, the crystal structures, thermal stabilities, and UV-Vis-NIR diffuse reflectance spectra of synthesised compounds I and II have also been determined.

Graphical abstract: The structural diversity of halogen-centered secondary building units: two new mixed-metal borate halides with deep-ultraviolet cut-off edges

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Publication details

The article was received on 17 Jan 2017, accepted on 02 Mar 2017 and first published on 02 Mar 2017


Article type: Paper
DOI: 10.1039/C7DT00204A
Citation: Dalton Trans., 2017,46, 4923-4928
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    The structural diversity of halogen-centered secondary building units: two new mixed-metal borate halides with deep-ultraviolet cut-off edges

    M. Mutailipu, M. Zhang, Y. Chen, X. Lu and S. Pan, Dalton Trans., 2017, 46, 4923
    DOI: 10.1039/C7DT00204A

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