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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Constants of diatomic molecules
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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, 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.
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]
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]
Notes
Go To: Top, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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