The Layered Semiconductor Cu(Sb2S3)[AlCl4]
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
Sb 2S 3 and CuCl were reacted in the ionic liquid [BMIm]Cl ⋅ 4.4AlCl 3 (BMIm=1-n-butyl-3-methylimidazolium) at 200 °C. Upon cooling to room temperature, orange-red colored, air-sensitive crystals of Cu(Sb 2S 3)[AlCl 4] precipitated. X-ray diffraction on a single-crystal revealed an orthorhombic crystal structure, in which cationic [Cu(Sb 2S 3)] + layers are separated by tetrahedral [AlCl 4] − anions. The uncharged Sb 2S 3 partial structure consists of one-dimensional strands with covalent Sb−S single bonds. The copper(I) cation is coordinated by three sulfur atoms and by one of chlorine atoms of the [AlCl 4] – anion. An optical band gap of 2.14 eV was deduced from UV/Vis spectra. In very good agreement, a band gap of 2.07 eV results from DFT-based calculations involving a new implementation of the bifunctional formalism for the exchange energy. By treatment with 0.1 molar hydrochloric acid, AlCl 3 was leached from Cu(Sb 2S 3)[AlCl 4] yielding a compound with the presumed composition Cu(Sb 2S 3)Cl. Hydrolysis at higher pH resulted in Cu 2–xS and Sb 4O 5Cl 2.
Details
Originalsprache | Englisch |
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Aufsatznummer | e202200021 |
Fachzeitschrift | Zeitschrift fur Anorganische und Allgemeine Chemie |
Jahrgang | 648 |
Ausgabenummer | 13 |
Publikationsstatus | Veröffentlicht - 14 Juli 2022 |
Peer-Review-Status | Ja |
Externe IDs
Scopus | 85125234943 |
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Mendeley | 58aad8cf-47d6-3bfe-9e50-524f9ec1de3d |
ORCID | /0000-0002-2391-6025/work/142250198 |
Schlagworte
Forschungsprofillinien der TU Dresden
DFG-Fachsystematik nach Fachkollegium
Fächergruppen, Lehr- und Forschungsbereiche, Fachgebiete nach Destatis
Ziele für nachhaltige Entwicklung
ASJC Scopus Sachgebiete
Schlagwörter
- antimony sulfide, ionothermal synthesis, layered compounds, semiconductors, topochemistry