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Rienmüller J, Bandemehr J, Kraus F. Single-crystal structures of A
2SiF 6 ( A = Tl, Rb, Cs), a better structure model for Tl 3[SiF 6]F, and its novel tetragonal polymorph. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2021. [DOI: 10.1515/znb-2021-0024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
We report on the syntheses and single-crystal structure determinations of the compounds A
2SiF6 (A = Tl, Rb, Cs). In comparison to the previous powder-based structure models we achieved more precise atom positions and distances. The compounds crystallize in the K2PtCl6 structure type, space group Fm
3
‾
$‾{3}$
m (No. 225, cF36) with a = 8.4749(10) Å, V = 608.7(2) Å3, Z = 4 at T = 100 K for Tl2SiF6, a = 8.3918(10) Å, V = 591.0(2) Å3, Z = 4 at T = 100 K for Rb2SiF6, and a = 8.8638(11) Å, V = 696.4(3) Å3, Z = 4 at T = 200 K for Cs2SiF6. For the compound Tl3[SiF6]F we present a previously unknown tetragonal modification and correct the crystal structure of its trigonal modification to hexagonal. The tetragonal one crystallizes in the (NH4)3[SiF6]F structure type, space group P4/mbm (No. 127, tP22) with a = 8.0313(8), c = 5.8932(6) Å, V = 380.13(7) Å3, Z = 2, T = 298 K, and the crystal structure of the hexagonal modification is best described in space group P63
mc (No. 186, hP22) with a = 7.8248(4), c = 6.8768(4) Å, V = 364.64(4) Å3, Z = 2, T = 100 K.
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Affiliation(s)
- Julia Rienmüller
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Str. 4, 35032 Marburg , Germany
| | - Jascha Bandemehr
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Str. 4, 35032 Marburg , Germany
| | - Florian Kraus
- Fachbereich Chemie , Philipps-Universität Marburg , Hans-Meerwein-Str. 4, 35032 Marburg , Germany
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Rudel SS, Müller TG, Kraus F. Na2PtF6, its Crystal Structure, Characterization, and Ammonolysis to [Na(NH3)3]2[PtF6]. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201400477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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