Autor: |
Leslie M. Schoop, Bettina V. Lotsch, Roland Eger, Hanne Nuss, Alexander Kuhn, Jürgen Nuss, Florian Pielnhofer |
Rok vydání: |
2019 |
Předmět: |
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Zdroj: |
Zeitschrift für anorganische und allgemeine Chemie. 645:267-271 |
ISSN: |
0044-2313 |
Popis: |
The crystal structure of boron tetrathiophosphate BPS4 was reinvestigated using single-crystal X-ray diffraction. The structure shows unidimensional chains similar to SiS2 as structural motifs. BPS4 crystallizes in the orthorhombic space group Ibam (no. 72), with a = 5.6173(3), b = 8.9929(4), c = 5.2433(3) angstrom and V = 264.87(2) angstrom(3) and is closely related to the orthorhombic high-temperature modification of AlPS4 (ht-AlPS4). The SiS2-like chains are all oriented parallel to the c axis, which explains the needle-like morphology and that the crystals easily cleave to thinner needles under mechanical stress. While ht-AlPS4 shows an ordered Al-P sublattice, the B-P sublattice in BPS4 is substantially disordered. The thermal properties of BPS4 were investigated by DTA measurements and a detailed analysis of the Raman spectrum assisted by quantum mechanical calculations is presented. The crystallographic disorder in BPS4 is the result of inter-chain disorder, whereas local intra-chain ordering of B and P can be concluded from Raman spectroscopy. |
Databáze: |
OpenAIRE |
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