Abstract
Two novel compounds, named [Ti2Na4(BTC4A)2(μ6-O2−)(CH3O−)2·2H2O·2DMA] (1) and [Ti4(BTC4A)(OH−)4(EtO−)6(iPrO−)2] (2) (H4BTC4A= p-tert-Butylthiacalix [4] arene), have been synthesized and characterized. Single crystal diffraction shows that compound 1 features a dumbbell-like molecule based on an octahedral Ti2Na4 core and two BTC4A4− ligands with cone conformation. Compound 2 is composed of a bi-titanium(IV) unit and a BTC4A4− ligand with 1,2-alternate conformation. The estimated optical bandgaps of compounds 1 and 2 are 2.87 and 1.97 eV, respectively, which are smaller than that of TiO2. Moreover, compounds 1 and 2 display much higher and more efficient photocatalytic degradation abilities for methylene blue than TiO2 under visible light irradiation.
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Acknowledgments
We are thankful for financial support from the Natural Science Foundation of Colleges and Universities in Jiangsu Province (No. 19KJB150009), the Open Foundation of State Key Laboratory of Structure Chemistry, Postgraduate Research & Practice Innovation Program of Jiangsu Province (No. KYCX18_2113), Undergraduate Students Project of Jiangsu Province, and Top-notch Academic Programs Project of Jiangsu Higher Education Institutions.
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The figures of powder X-ray diffraction, FT-IR spectroscopies, and TGA patterns are provided as supporting information. CCDC 1892637 for 1, 1892639 for 2 contain the supplementary crystallographic data. The data can be obtained free of charge at http://www.ccdc.cam.ac.uk/conts/retrieving.html.
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Zhao, XY., Zhu, Y., Zhuo, CX. et al. Two Novel Titanium(IV)-Based Compounds Supported by Thiacalix[4]arene: Syntheses, Structures and Photocatalytic Properties. J Clust Sci 32, 1075–1081 (2021). https://doi.org/10.1007/s10876-020-01875-8
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DOI: https://doi.org/10.1007/s10876-020-01875-8