Iridium tetroxide (IrO4, Iridium(VIII) oxide) is a binary compound of oxygen and iridium in oxidation state +8.[1] This compound was formed by photochemical rearrangement of [(η1-O2)IrO2] in solid argon at a temperature of 6 K (−267.15 °C; −448.87 °F). At higher temperatures, the oxide is unstable.[2] The detection of the iridium tetroxide cation IrO+ 4 by infrared photodissociation spectroscopy with formal oxidation state +9 has been reported, the highest currently known of any element.[3][4] However no salts are known, as attempted production of an Ir(IX) salt such as IrO4SbF6 did not result in anything.
^Gong, Yu; Zhou, Mingfei; Kaupp, Martin; Riedel, Sebastian (2009). "Formation and Characterization of the Iridium Tetroxide Molecule with Iridium in the Oxidation State +VIII". Angewandte Chemie International Edition. 48 (42): 7879–7883. doi:10.1002/anie.200902733. PMID 19593837.
^Citra, Angelo; Andrew, Lester (1999). "Reactions of Laser-Ablated Iridium Atoms with O2. Infrared Spectra and DFT Calculations for Iridium Dioxide and Peroxoiridium(VI) Dioxide in Solid Argon". J. Phys. Chem. A. 103 (21): 4182–4190. Bibcode:1999JPCA..103.4182C. doi:10.1021/jp990388o.
^Himmel, D.; Knapp, C.; Patzschke, M.; Riedel, S. (2010). "How far can we go? Quantum-chemical investigations of oxidation state IX". ChemPhysChem. 11 (4): 865–869. doi:10.1002/cphc.200900910. PMID 20127784.
^Wang, Guanjun; Zhou, Mingfei; Goettel, James T.; Schrobilgen, Gary J.; Su, Jing; Li, Jun; Schlöder, Tobias; Riedel, Sebastian (23 October 2014). "Identification of an iridium-containing compound with a formal oxidation state of IX". Nature. 514 (7523): 475–477. Bibcode:2014Natur.514..475W. doi:10.1038/nature13795. PMID 25341786. S2CID 4463905.
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January 01, 1970
iridium, tetroxide, iro4, iridium, viii, oxide, binary, compound, oxygen, iridium, oxidation, state, this, compound, formed, photochemical, rearrangement, iro2, solid, argon, temperature, higher, temperatures, oxide, unstable, detection, iridium, tetroxide, ca. Iridium tetroxide IrO4 Iridium VIII oxide is a binary compound of oxygen and iridium in oxidation state 8 1 This compound was formed by photochemical rearrangement of h1 O2 IrO2 in solid argon at a temperature of 6 K 267 15 C 448 87 F At higher temperatures the oxide is unstable 2 The detection of the iridium tetroxide cation IrO 4 by infrared photodissociation spectroscopy with formal oxidation state 9 has been reported the highest currently known of any element 3 4 However no salts are known as attempted production of an Ir IX salt such as IrO4SbF6 did not result in anything Iridium VIII oxide Names IUPAC name Iridium VIII oxide Identifiers CAS Number 474103 25 8 3D model JSmol Interactive image InChI InChI 1S Ir 4OKey WIFDYPVIKSJTTM UHFFFAOYSA N SMILES O Ir O O O Properties Chemical formula Ir O 4 Molar mass 256 213 g mol 1 Melting point 267 15 C 448 87 F 6 00 K Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Infobox referencesReferences edit Gong Yu Zhou Mingfei Kaupp Martin Riedel Sebastian 2009 Formation and Characterization of the Iridium Tetroxide Molecule with Iridium in the Oxidation State VIII Angewandte Chemie International Edition 48 42 7879 7883 doi 10 1002 anie 200902733 PMID 19593837 Citra Angelo Andrew Lester 1999 Reactions of Laser Ablated Iridium Atoms with O2 Infrared Spectra and DFT Calculations for Iridium Dioxide and Peroxoiridium VI Dioxide in Solid Argon J Phys Chem A 103 21 4182 4190 Bibcode 1999JPCA 103 4182C doi 10 1021 jp990388o Himmel D Knapp C Patzschke M Riedel S 2010 How far can we go Quantum chemical investigations of oxidation state IX ChemPhysChem 11 4 865 869 doi 10 1002 cphc 200900910 PMID 20127784 Wang Guanjun Zhou Mingfei Goettel James T Schrobilgen Gary J Su Jing Li Jun Schloder Tobias Riedel Sebastian 23 October 2014 Identification of an iridium containing compound with a formal oxidation state of IX Nature 514 7523 475 477 Bibcode 2014Natur 514 475W doi 10 1038 nature13795 PMID 25341786 S2CID 4463905 External links edit nbsp Media related to Iridium tetroxide at Wikimedia Commons Retrieved from https en wikipedia org w index php title Iridium tetroxide amp oldid 1130336240, wikipedia, wiki, book, books, library,
