Syntheses, crystallographic characterization, and structural relations of Rb[SCN]
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Alena Shlyaykher
Abstract
Colorless rubidium thiocyanate was synthesized by three different approaches. DCS-TGA measurements allowed for extraction of phase transition, melting, and decomposition temperatures. Single-crystal X-ray diffraction showed Rb[SCN] to crystallize in the low-temperature LT-K[SCN] crystal structure type (Pbcm, oP16). Above its phase-transition temperature (432.1 K) the title compound crystallizes with the high-temperature HT-K[SCN] crystal structure type (I4/mcm, tI28) with head-to-tail disordered thiocyanate anions. Both modifications are related to one another and to the LT/HT-Cs[SCN] structure types, and the relation has been studied in detail employing the Bärnighausen formalism. Phase purity and bulk phase transition were confirmed by temperature-dependent PXRD.
Dedicated to Professor Christian Näther on the occasion of his 60th birthday.
Funding source: Fonds der Chemischen Industrie
Funding source: DFG
Award Identifier / Grant number: 1357/4-1
Acknowledgments
F.T. thanks Prof. S. Dehnen for excellent support. J. Pfeiffer is gratefully acknowledged for measuring a single crystal dataset of Rb[SCN]. Thanks are also due to A. Schulz (MPI-FKF Stuttgart, Germany) for acquiring the Raman spectrum of Rb[SCN].
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This study received Liebig fellowship from Fonds der Chemischen Industrie and also funded by the DFG (No. 1357/4-1).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/zkri-2022-0015).
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Articles in the same Issue
- Frontmatter
- In this issue
- Micro Review
- Structural diversity among multinary pnictide oxides: a minireview focused on semiconducting and superconducting heteroanionic materials
- Inorganic Crystal Structures (Original Paper)
- The orthorhombic-to-monoclinic phase transition in NbCrP – Peierls distortion of the chromium chain
- Halide-sodalites: thermal expansion, decomposition and the Lindemann criterion
- RE3Rh2Sn4 (RE = Y, Gd–Tm, Lu) – first stannides with Lu3Co2In4 type structure
- Scandium–copper–indides deriving from the ZrNiAl and MnCu2Al type structures
- Syntheses, crystallographic characterization, and structural relations of Rb[SCN]
- Organic and Metalorganic Crystal Structures (Original Paper)
- Unique supramolecular assembly of a synthetic achiral α, γ-hybrid tripeptide
