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Iridium tetroxide

In today's world, Iridium tetroxide is a topic that has sparked great interest and debate in various areas of society. From its impact on the economy to its influence on popular culture, Iridium tetroxide has become a central point of discussion. As we move into the 21st century, it is crucial to understand and analyze the role of Iridium tetroxide in our lives, both individually and collectively. This article explores the various facets and perspectives related to Iridium tetroxide, addressing its relevance and scope in today's world.

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Iridium(VIII) oxide
Names
IUPAC name
Iridium(VIII) oxide
Identifiers
3D model (JSmol)
  • InChI=1S/Ir.4O
    Key: WIFDYPVIKSJTTM-UHFFFAOYSA-N
  • O=(=O)(=O)=O
Properties
IrO4
Molar mass 256.213 g·mol−1
Melting point Decomposes at −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 , 100 kPa).

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 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.

References

  1. ^ 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.
  2. ^ 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.
  3. ^ 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.
  4. ^ 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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