Evidence of the existence of the As<sub>4</sub>S<sub>6</sub> molecule produced by light exposure of alacranite, As<sub>8</sub>S<sub>9</sub>
Abstract 4 S6 molecule, although theoretically predicted and supposed to occur in amorphous arsenic sulfides, was missing in the reported structures of crystalline As chalcogenides; the thermodynamic stable phase for this stoichiometry, in fact, is that of the mineral orpiment, which shows a layered structural arrangement based on trigonal AsS3 pyramids. Here we report the first possible occurrence of the As4 S6 molecule together with the other known As4 Sn (n = 3, 4, 5) molecules randomly replacing each other in the crystalline structure of a new monoclinic product obtained by the light-induced alteration of the mineral alacranite, As8 S9. Our findings are based on single-crystal X-ray diffraction experiments. The fact that As4 S6 formed in a crystalline light-induced alteration product could indicate a heretofore unknown role of this molecule in the photoinduced changes of the physico-chemical properties of both bulk glasses and thin films in the As–S system, widely studied in optics and optoelectronics.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Evidence of the existence of the As4S6 molecule produced by light exposure of alacranite, As8S9 ; volume:36 ; number:4 ; year:2024 ; pages:615-622 ; extent:8
European journal of mineralogy ; 36, Heft 4 (2024), 615-622 (gesamt 8)
- Classification
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Fotografie, Computerkunst
- Creator
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Bindi, Luca
Bonazzi, Paola
Chelazzi, Laura
Franceschini, Matteo M. N.
Lepore, Giovanni O.
Morana, Marta
Pratesi, Giovanni
Taddei, Alice
Zoppi, Matteo
Menchetti, Silvio
- DOI
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10.5194/ejm-36-615-2024
- URN
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urn:nbn:de:101:1-2501090909063.123101493102
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:23 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Bindi, Luca
- Bonazzi, Paola
- Chelazzi, Laura
- Franceschini, Matteo M. N.
- Lepore, Giovanni O.
- Morana, Marta
- Pratesi, Giovanni
- Taddei, Alice
- Zoppi, Matteo
- Menchetti, Silvio
Other Objects (12)
Pleysteinite, ((H<sub>2</sub>O)<sub>0.5</sub>K<sub>0.5</sub>)<sub>2</sub>Mn<sub>2</sub>Al<sub>3</sub>(PO<sub>4</sub>)<sub>4</sub>F<sub>2</sub>(H<sub>2</sub>O)<sub>10</sub>  ⋅  4H<sub>2</sub>O, the Al analogue of benyacarite, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany