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Names | |
---|---|
IUPAC name
Iridium(VIII) oxide
| |
Identifiers | |
3D model (
JSmol)
|
|
| |
| |
Properties | |
IrO4 | |
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).
|
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 IrO4
SbF6 did not result in anything.
![]() | |
Names | |
---|---|
IUPAC name
Iridium(VIII) oxide
| |
Identifiers | |
3D model (
JSmol)
|
|
| |
| |
Properties | |
IrO4 | |
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).
|
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 IrO4
SbF6 did not result in anything.