Caesium sesquioxide is a
chemical compound with the
formulaCs2O3 or more accurately Cs4O6. It is an
oxide of
caesium containing
oxygen in different
oxidation states. It consists of caesium
cationsCs+,
superoxideanionsO−2 and
peroxide anions O2−2. Caesium in this compound has an oxidation state of +1, while oxygen in superoxide has an oxidation state of −1/2 and oxygen in peroxide has an oxidation state of −1. This compound has a structural formula of (Cs+)4(O−2)2(O2−2).[1][2] Compared to the other caesium oxides, this phase is less well studied,[3] but has been long present in the literature.[4] It can be created by thermal decomposition of
caesium superoxide at 290 °C.[5]
^Band, A.; Albu-Yaron, A.; Livneh, T.; Cohen, H.; Feldman, Y.; Shimon, L.; Popovitz-Biro, R.; Lyahovitskaya, V.; Tenne, R. (2004-07-27). "Characterization of Oxides of Cesium". The Journal of Physical Chemistry B. 108 (33). American Chemical Society (ACS): 12360–12367.
doi:
10.1021/jp036432o.
ISSN1520-6106.
^Helms, Alfred; Klemm, Wilhelm (1939-08-29). "Über die Kristallstrukturen der Rubidium- und Cäsiumsesquioxyde". Zeitschrift für anorganische und allgemeine Chemie (in German). 242 (2). Wiley: 201–214.
doi:
10.1002/zaac.19392420210.
ISSN0863-1786.
^Merz, Patrick; Schmidt, Marcus; Felser, Claudia; Jansen, Martin (2017-03-24). "Thermo-analytical Investigations on the Superoxides AO2 (A = K, Rb, Cs), Revealing Facile Access to Sesquioxides A4O6". Zeitschrift für anorganische und allgemeine Chemie. 643 (8). Wiley: 544–547.
doi:
10.1002/zaac.201700013.
ISSN0044-2313.
^Okur, H. Esma; Colman, Ross H.; Ohishi, Yasuo; Sans, Annette; Felser, Claudia; Jansen, Martin; Prassides, Kosmas (2020-01-06). "Pressure-Induced Charge Disorder–Order Transition in the Cs4O6 Sesquioxide". Inorganic Chemistry. 59 (2). American Chemical Society (ACS): 1256–1264.
doi:
10.1021/acs.inorgchem.9b02974.
ISSN0020-1669.
PMID31904961.
S2CID210041198.
^Arčon, D.; Anderle, K.; Klanjšek, M.; Sans, A.; Mühle, C.; Adler, P.; Schnelle, W.; Jansen, M.; Felser, C. (2013-12-10). "Influence of O2 molecular orientation on p-orbital ordering and exchange pathways in Cs4O6". Physical Review B. 88 (22). American Physical Society (APS): 224409.
Bibcode:
2013PhRvB..88v4409A.
doi:
10.1103/physrevb.88.224409.
ISSN1098-0121.