Iridium monoxide
- Formula: IrO
- Molecular weight: 208.216
- IUPAC Standard InChI: InChI=1S/Ir.O/q+2;-2
- IUPAC Standard InChIKey: MULJEVYTNIIVIS-UHFFFAOYSA-N
- CAS Registry Number: 12030-48-7
- Chemical structure:
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Gas phase ion energetics data
Go To: Top, Constants of diatomic molecules, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to IrO+ (ion structure unspecified)
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 10.1 | EI | Norman, Staley, et al., 1965 | RDSH |
Constants of diatomic molecules
Go To: Top, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Klaus P. Huber and Gerhard H. Herzberg
Data collected through February, 1975
| Symbol | Meaning |
|---|---|
| State | electronic state and / or symmetry symbol |
| Te | minimum electronic energy (cm-1) |
| ωe | vibrational constant – first term (cm-1) |
| ωexe | vibrational constant – second term (cm-1) |
| ωeye | vibrational constant – third term (cm-1) |
| Be | rotational constant in equilibrium position (cm-1) |
| αe | rotational constant – first term (cm-1) |
| γe | rotation-vibration interaction constant (cm-1) |
| De | centrifugal distortion constant (cm-1) |
| βe | rotational constant – first term, centrifugal force (cm-1) |
| re | internuclear distance (Å) |
| Trans. | observed transition(s) corresponding to electronic state |
| ν00 | position of 0-0 band (units noted in table) |
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Additional bands at 14338, 14490 cm-1 Raziunas, Macur, et al., 1965 and 17070 cm-1 Raziunas, Macur, et al., 1965, Jansson and Scullman, 1972. | ||||||||||||
| ↳Raziunas, Macur, et al., 1965; Jansson and Scullman, 1972 | ||||||||||||
| H' (3/2) | [0.3378] 1 | [4.0E-7] 1 | [1.8381] | H' → A' R | 22005.8 2 1 Z | |||||||
| ↳Jansson and Scullman, 1972 | ||||||||||||
| H" 5/2 | 3 | [0.3371] | 3 | [4.0E-7] | [1.8400] | H" → A" R | 21869.7 2 Z | |||||
| ↳Jansson and Scullman, 1972 | ||||||||||||
| D (3/2) | a' + 17720 | [672.5] Z | 0.3534 4 | 0.0026 | [3.2E-7] | 1.7971 | D → A' R | 17602.72 2 Z | ||||
| ↳missing citation | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| A 5/2 6 | 903.3 Z | 4.7 | 0.3867 5 | 0.0024 | [2.9E-7] | 1.7180 | ||||||
| A' (3/2) 6 | 7 | 909.4 Z | 4.7 | 0.3847 | 0.0025 | 3.0E-7 | 1.7224 | |||||
Notes
| 1 | Only one perturbed vibrational level of H' analyzed; vibrational numbering uncertain. |
| 2 | J' = 0 relative to J" = 0. |
| 3 | Three additional levels, numbered I, II, and III by Jansson and Scullman, 1972, have been identified in transitions to A" and may represent v = 1, 2, and 3 of H". With this interpretation B1= 0.3307, B2= 0.326, B3= 0.3205, and ΔG(1/2 ,..., 3/2) = 605.2 Z, 564.6, 544.3. |
| 4 | Perturbation in v=0 at J = 59 1/2. |
| 5 | Perturbations. |
| 6 | A' and A" may be the two components of a 2Δ state. |
| 7 | missing note |
| 8 | Thermochemical value, estimated Drowart and Goldfinger, 1967 from mass-spectrometric results of Norman, Staley, et al., 1965. |
References
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Norman, Staley, et al., 1965
Norman, J.H.; Staley, H.G.; Bell, W.E.,
Massspectrometric study of gaseous oxides of iridium,
J. Chem. Phys., 1965, 42, 1123. [all data]
Raziunas, Macur, et al., 1965
Raziunas, V.; Macur, G.; Katz, S.,
Emission spectrum and thermodynamic properties of ruthenium monoxide,
J. Chem. Phys., 1965, 43, 1010. [all data]
Jansson and Scullman, 1972
Jansson, K.; Scullman, R.,
On the band spectrum of IrO in the region 4200-6400 Å,
J. Mol. Spectrosc., 1972, 43, 208. [all data]
Drowart and Goldfinger, 1967
Drowart, J.; Goldfinger, P.,
Investigation of inorganic systems at high temperature by mass spectrometry,
Angew. Chem. Int. Ed. Engl., 1967, 6, 581. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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