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Synthesis, structure and characterization of M(IO3)2(HIO3) (M = Ca, Sr) as new anhydrous alkaline earth metal bis-iodate hydrogeniodate compounds

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Abstract

Two new metal iodates, namely, M(IO3)2(HIO3) (M = Ca, Sr), were successfully synthesized by the hydrothermal method, and their structures were determined by single-crystal X-ray diffraction. They were found to be isostructural, and crystallized in the monoclinic space group P21/n with the lattice parameters: a = 6.9647(14) Å, b = 15.719(3) Å, c = 7.2042(14) Å, β = 92.76(3)°, Z = 4 for Ca(IO3)2(HIO3), and a = 7.0697(14) Å, b = 15.986(3) Å, c = 7.3802(15) Å, β = 93.13(3)°, Z = 4 for Sr(IO3)2(HIO3). The structure featured a [HIO3]·[IO3] complex with strong intermolecular interactions, and it was composed of [IO3] anions and [HIO3]·[IO3] complexes interconnected by Ca2+ or Sr2+ cations. The two compounds were characterized by X-ray diffraction, IR and Raman spectroscopies, UV–Vis diffuse reflectance spectroscopy, thermogravimetry and differential scanning calorimetry as well as by theoretical calculations.

Graphical abstract: Synthesis, structure and characterization of M(IO3)2(HIO3) (M = Ca, Sr) as new anhydrous alkaline earth metal bis-iodate hydrogeniodate compounds

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Publication details

The article was received on 19 Jun 2019, accepted on 30 Jul 2019 and first published on 31 Jul 2019


Article type: Paper
DOI: 10.1039/C9DT02575H
Dalton Trans., 2019, Advance Article

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    Synthesis, structure and characterization of M(IO3)2(HIO3) (M = Ca, Sr) as new anhydrous alkaline earth metal bis-iodate hydrogeniodate compounds

    Y. An, Y. Zhong, T. Sun, H. Wang, Z. Hu, H. Liu, S. Liu, Y. Kong and J. Xu, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C9DT02575H

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