Structural properties of mixed (NH{sub 4}){sub 2−x}Rb{sub x}ZnCl{sub 4} (x=0, 1, and 2) crystals studied by {sup 1}H and {sup 87}Rb nuclear magnetic resonance
- Department of Energy and Electric Engineering, Korea Polytechnic University, Siheung 429-793 (Korea, Republic of)
The structures of mixed (NH{sub 4}){sub 2−x}Rb{sub x}ZnCl{sub 4} (x=0, 1, and 2) single crystals were determined by x-ray diffraction. In addition, the nuclear magnetic resonance (NMR) spectra and spin–lattice relaxation times of the {sup 1}H and {sup 87}Rb nuclei in the three crystals were determined using NMR spectroscopy. We analyzed the crystallographic structures of these crystals by considering the occupation probabilities (NH{sub 4} or Rb) of the two cationic sites. Our NMR results confirm that there are two crystallographically inequivalent NH{sub 4} sites, NH{sub 4}(1) and NH{sub 4}(2), in (NH{sub 4}){sub 2}ZnCl{sub 4}, and two crystallographically inequivalent Rb sites, Rb(1) and Rb(2), in Rb{sub 2}ZnCl{sub 4}. However, only one NH{sub 4} site and two Rb sites were observed in NH{sub 4}RbZnCl{sub 4}. The NH{sub 4} and Rb occupation rates of each of the two available sites, A{sub 1} and A{sub 2}, were determined from the NMR signals. - Graphical abstract: The structures of mixed (NH{sub 4}){sub 2−x}Rb{sub x}ZnCl{sub 4} (x=0, 1, and 2) single crystals were determined by x-ray diffraction. In addition, the nuclear magnetic resonance (NMR) spectra and spin–lattice relaxation times of the {sup 1}H and {sup 87}Rb nuclei in the three crystals were determined using NMR spectroscopy. Highlights: ► Mixed (NH{sub 4}){sub 2−x}Rb{sub x}ZnCl{sub 4} (x=0, 1, and 2) crystals. ► The crystallographic structures by occupation probabilities. ► The NH{sub 4} and Rb occupation rates.
- OSTI ID:
- 22304557
- Journal Information:
- Journal of Solid State Chemistry, Vol. 200; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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