World Library  
Flag as Inappropriate
Email this Article

Rhodium(IV) oxide

Article Id: WHEBN0022626054
Reproduction Date:

Title: Rhodium(IV) oxide  
Author: World Heritage Encyclopedia
Language: English
Subject: Rhodium, Carbon trioxide, Disulfur dioxide, Ytterbium(III) oxide, Antimony tetroxide
Publisher: World Heritage Encyclopedia

Rhodium(IV) oxide

Rhodium(IV) oxide
Rhodium(IV) oxide
CAS number  YesY
ChemSpider  YesY
EC number
Jmol-3D images Image 1
Molecular formula RhO2
Molar mass 134.904 g/mol
Appearance black crystalline solid
Density 7.2 g/cm³
Melting point 1050 °C (decomposes)
Solubility insoluble in aqua regia
Crystal structure tetragonal (rutile)
EU classification not listed
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 YesY   YesY/N?)

Rhodium(IV) oxide (or rhodium dioxide) is the chemical compound with the formula RhO2.

Chemical properties

RhO2 is highly insoluble even in hot aqua regia.[1]


RhO2 has the tetragonal rutile structure.[2]

Physical properties

RhO2 has metallic resistivity with values <10−4 Ohm·cm. It transforms in air to RhO3 at 850 °C and then to metal and oxygen at 1050 °C.[2]

See also


  1. ^ O. Muller and R. Roy (1968). "Formation and stability of the platinum and rhodium oxides at high oxygen pressures and the structures of Pt3O4, β-PtO2 and RhO2". Journal of the Less Common Metals 16: 129–146.  
  2. ^ a b R. D. Shannon (1968). "Synthesis and properties of two new members of the rutile family RhO2 and PtO2". Solid State Communications 6: 139–143.  

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.