Two Novel Titanium(IV)-Based Compounds Supported by Thiacalix[4]arene: Syntheses, Structures and Photocatalytic Properti
- PDF / 1,601,689 Bytes
- 7 Pages / 595.276 x 790.866 pts Page_size
- 37 Downloads / 167 Views
(0123456789().,-volV)(0123456789(). ,- volV)
ORIGINAL PAPER
Two Novel Titanium(IV)-Based Compounds Supported by Thiacalix[4]arene: Syntheses, Structures and Photocatalytic Properties Xue-Yan Zhao1 • Yi Zhu1 • Chun-Xue Zhuo1 • Yan-Li Gai1 • Miao Wu1 • Wen-Shu Zhang1 Yu-Die Zhou1 • Rui-Ting Wen1 • Ke-Cai Xiong1,2
•
Received: 11 March 2020 Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Two novel compounds, named [Ti2Na4(BTC4A)2(l6-O2-)(CH3O-)22H2O2DMA] (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. Keywords Thiacalixarene Titanium(IV) Supramolecular chemistry Photocatalytic property
Introduction In the last decade, titanium(IV)-based compounds (especially polyoxo-titanium(IV) clusters) have drawn many attentions owing to their diverse structures and potential applications, such as photocatalytic hydrogen production, photodegradation of dyes, fluorescent labelling agent, and so on [1–20]. Usually, polyoxo-titanium(IV) clusters include protecting ligands (alcohol ligands, carboxylic ligands) and titanium(IV)-oxo cores. So their architectures
Xue-Yan Zhao and Yi Zhu contributed equally to this work.
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10876-020-01875-8) contains supplementary material, which is available to authorized users. & Ke-Cai Xiong [email protected] 1
School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116, People’s Republic of China
2
State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People’s Republic of China
and properties can be modulated by different reaction conditions and protecting ligands. J. Zhang and coworkers reported a lot of new polyoxo-titanium(IV) clusters, including Ti52 with the largest nuclearity [2–11]. They also have done a systemic study on the bandgap engineering of similar polyoxo-titanium(IV) clusters with the same Ti6 core and different bandgaps through the employment of the variety of O-donor ligands, including carboxylates, phosphonates, and sulfonates [9]. D. Q. Yuan and coworkers reported a titanium(IV)-based compound supported by c-propylpyrogallol [4] arene, which can effectively degrade the methylene blue under sunlight [19]. However, the nuclearity of the structurally known titanium(IV)-based compounds is s
Data Loading...
