Chromium monoxide
- Formula: CrO
- Molecular weight: 67.9955
- IUPAC Standard InChIKey: XVOFZWCCFLVFRR-UHFFFAOYSA-N
- CAS Registry Number: 12018-00-7
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Reaction thermochemistry 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 by: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
(CAS Reg. No. 53293-42-8 • 4294967295) + = CAS Reg. No. 53293-42-8
By formula: (CAS Reg. No. 53293-42-8 • 4294967295CrO) + CrO = CAS Reg. No. 53293-42-8
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 617. ± 36. | kJ/mol | N/A | Wenthold, Jonas, et al., 1997 | gas phase |
Constants of diatomic molecules
Go To: Top, Reaction thermochemistry 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 December, 1974
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
B 5Π | 16586 1 | 750.5 H | 9.4 | 0.4874 | 0.0044 | 1.703 | B → X R | 16487.6 | ||||
↳Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964 | ||||||||||||
750.5 H | 9.4 | 0.4801 | 0.0048 | 1.703 | B → X R | 16501.2 | ||||||
↳Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964 | ||||||||||||
750.5 H | 9.4 | 0.4751 | 0.0057 | 1.703 | B → X R | 16511.3 | ||||||
↳Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964 | ||||||||||||
750.5 H | 9.4 | 0.4735 | 0.0070 | 1.703 | B → X R | 16519.4 | ||||||
↳Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964 | ||||||||||||
750.5 H | 9.4 | 0.4675 | 0.0050 | 1.703 | B → X R | 16515.2 | ||||||
↳Ferguson, 1932; Ghosh, 1932; missing citation; missing citation; Murthy and Nagaraj, 1964 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
(11117) | ||||||||||||
↳missing citation | ||||||||||||
X 5Π | 0 2 | 898.4 H | 6.75 | 0.5410 | 0.0049 | 1.615 | ||||||
0 2 | 898.4 H | 6.75 | 0.5348 | 0.0049 | 1.615 | |||||||
0 2 | 898.4 H | 6.75 | 0.5284 | 0.0050 | 1.615 | |||||||
0 2 | 898.4 H | 6.75 | 0.5233 | 0.0036 | 1.615 | |||||||
0 2 | 898.4 H | 6.75 | 0.5231 | 0.0070 | 1.615 |
Notes
1 | |A| ~100. |
2 | |A| ~110. Not certain that this is the ground state. |
3 | Thermochemical value (mass-spectrom.) Grimley, Burns, et al., 1961. |
References
Go To: Top, Reaction thermochemistry 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.
Wenthold, Jonas, et al., 1997
Wenthold, P.G.; Jonas, K.-L.; Lineberger, W.C.,
Ultraviolet Photoelectron Spectroscopy of the Chromium Dioxide Negative Ion,
J. Chem. Phys., 1997, 106, 23, 9961, https://doi.org/10.1063/1.473840
. [all data]
Ferguson, 1932
Ferguson, W.F.C.,
The chromium oxide and the vanadium oxide band spectra,
Bur. Stand. J. Res. US, 1932, 8, 381. [all data]
Ghosh, 1932
Ghosh, C.,
Das bandenspektrum des chromoxyds,
Z. Phys., 1932, 78, 521. [all data]
Murthy and Nagaraj, 1964
Murthy, N.S.; Nagaraj, S.,
A note on the Franck-Condon factors and r-centroids of the CrO (A→X) band system,
Proc. Phys. Soc. London, 1964, 84, 827. [all data]
Grimley, Burns, et al., 1961
Grimley, R.T.; Burns, R.P.; Inghram, M.G.,
Thermodynamics of the vaporization of Cr2O3: dissociation energies of CrO, CrO2, and CrO3,
J. Chem. Phys., 1961, 34, 664. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Constants of diatomic molecules, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.