Praseodymium monoxide
- Formula: OPr
- Molecular weight: 156.9070
- CAS Registry Number: 12035-81-3
- Information on this page:
- Options:
Gas phase ion energetics data
Go To: Top, Constants of diatomic molecules, NIST Free Links, 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to OPr+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
4.9 ± 0.1 | EI | Ackermann, Rauh, et al., 1976 | LLK |
4.9 ± 0.5 | EI | Staley and Norman, 1969 | RDSH |
Constants of diatomic molecules
Go To: Top, Gas phase ion energetics data, NIST Free Links, 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 July, 1977
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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
The following classifications and analyses are by Shenyavskaya, Egorova, et al., 1973. Most of the bands are observed in emission and absorption. | ||||||||||||
for the following states, the first line refers to the upper state constants e.g. ω'e and the second line refers to the lower state constants e.g. ω"e | ||||||||||||
XXII | R | 18961.2 H | ||||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
18703.6 | 786.4 H | 4.07 1 | R | 18679.5 H | ||||||||
↳Watson, 1938; missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
18703.6 | 834.0 H | 2.56 | R | 18679.5 H | ||||||||
↳Watson, 1938; missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
17886.5 | 785.4 H | 2.93 | R | 17863.0 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
17886.5 | 832.2 H | 2.01 | R | 17863.0 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
XIX | 17588.0 | 791.8 H | 4.00 | R | 17567.1 H | |||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
17588.0 | 833.1 H | 3.05 | R | 17567.1 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
XVIII | R | 17345.8 H | ||||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
16631.4 | 790.0 H | 4.49 | R | 16609.6 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
16631.4 | 831.9 H | 1.75 | R | 16609.6 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
15464.6 | 785.9 H | 2.70 | R | 15442.0 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
15464.6 | 830.7 H | 2.00 | R | 15442.0 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
14461 | [786.1] H | R | 14438.5 H | |||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
14461 | [830.9] H | R | 14438.5 H | |||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
XIV | 14436 | [730.0] H | R | 14384.0 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
14436 | 835.8 H | 2.4 | R | 14384.0 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
XIII | 14112.8 | 789.6 H | 2.76 | R | 14090.1 H | |||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
14112.8 | 835.0 H | 2.25 | R | 14090.1 H | ||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
14045 | [754.0] H | R | 14006.1 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
14045 | [830.8] H | R | 14006.1 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
13678 | [788.0] H | R | 13656.9 H | |||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
13678 | [829.4] H | R | 13656.9 H | |||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
13079 | [754.4] H 2 | R | 13038.62 H | |||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
13079 | 835.8 H | 2.35 | R | 13038.62 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
IX | 12756.0 3 | 745.0 H | 2.27 | R | 12710.8 H | |||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
12756.0 3 | 835.1 H | 1.92 | R | 12710.8 H | ||||||||
↳missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
VIII | 11971 | [733.5] H | R | 11922.0 H | ||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
11971 | [831.0] H | R | 11922.0 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
11815.8 3 | [741.03] Z | 2.16 H 2 | R | 11770.33 Z | ||||||||
↳missing citation; missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
11815.8 3 | [831.78] Z | 2.22 H | R | 11770.33 Z | ||||||||
↳missing citation; missing citation; Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
11150 | [754.0] H | R | 11109.3 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
11150 | 836.4 H | 2.45 | R | 11109.3 H | ||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
11021 | [742] H | R | 10976.2 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
11021 | [830.7] H | R | 10976.2 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
IV | 10482 | [740.2] H | R | 10437.6 H | ||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
10482 | [829.6] H | R | 10437.6 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
III | 10240.2 | 764.5 H | 2.60 | R | 10204.7 H | |||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
10240.2 | 835.8 H | 3.25 | R | 10204.7 H | ||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
10048 | [728.1] H | R | 9996.0 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
10048 | [831.2] H | R | 9996.0 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
9281 | [735.3] H | R | 9233.0 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
9281 | [830.5] H | R | 9233.0 H | |||||||||
↳Shenyavskaya, Egorova, et al., 1973 | ||||||||||||
From the IR SPectrum of PrO in and Ar matrix: ΔG(1/2) = 17.1 for Pr16O, and 775.4 for Pr18O. | ||||||||||||
↳Gabelnick, Reedy, et al., 1974 |
Notes
1 | Different analysis by Watson, 1938 |
2 | Single P, Q, R branches; rot. analysis. 6 |
3 | Venkitachalam, Krishnamurty, et al., 1972 suggest that systems VII and IX form the two components of a doublet system. |
4 | Thermochemical value (mass-spectrometry) Walsh, Dever, et al., 1961, Ames, Walsh, et al., 1967, recalculated Smoes, Coppens, et al., 1969, Bergman, Coppens, et al., 1970. |
5 | Corrected electron impact appearance potential Ackermann, Rauh, et al., 1976, 2. |
6 | Rotational constants obtained by Shenyavskaya, Egorova, et al., 1973. System X: B0' = 0.3459, D'0 = 3.1E-7; r'0 = 1.842 B0" = 0.3620, D'0 = 2.4E-7; r"0 = 1.801 . System VII: B1' = 0.3418; D'1 = 2.4E-7; B0' = 0.3414; D'0 = 1.1E-7; r'0 = 1.854 B1" = 0.3595; D"1 = 2.6E-7; B0" = 0.3610 ;D"0 = 2.6E-7; r"0 = 1.803: (B,D in cm-1, r in Å). The upper state of system VII is perturbed. Different rotational constants and band origins have been obtained by Venkitachalam, Krishnamurty, et al., 1972. |
References
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ackermann, Rauh, et al., 1976
Ackermann, R.J.; Rauh, E.G.; Thorn, R.J.,
The thermodynamics of ionization of gaseous oxides; the first ionization potentials of the lanthanide metals and monoxides,
J. Chem. Phys., 1976, 65, 1027. [all data]
Staley and Norman, 1969
Staley, H.G.; Norman, J.H.,
Thermodynamics of gaseous monoxide-dioxide equilibria for cerium, praseodymium and neodymium,
Intern. J. Mass Spectrom. Ion Phys., 1969, 2, 35. [all data]
Shenyavskaya, Egorova, et al., 1973
Shenyavskaya, E.A.; Egorova, I.V.; Lupanov, V.N.,
Electronic spectrum of praseodymium monoxide,
J. Mol. Spectrosc., 1973, 47, 355. [all data]
Watson, 1938
Watson, W.W.,
Spectra of the monoxides of cerium and praseodymium,
Phys. Rev., 1938, 53, 639. [all data]
Gabelnick, Reedy, et al., 1974
Gabelnick, S.D.; Reedy, G.T.; Chasanov, M.G.,
Infrared spectra and structure of some matrix-isolated lanthanide and actinide oxides,
J. Chem. Phys., 1974, 60, 3, 1167, https://doi.org/10.1063/1.1681128
. [all data]
Venkitachalam, Krishnamurty, et al., 1972
Venkitachalam, T.V.; Krishnamurty, G.; Narasimham, N.A.,
Emission spectrum of PrO,
Proc. Indian Acad. Sci. Sect. A, 1972, 76, 113. [all data]
Walsh, Dever, et al., 1961
Walsh, P.N.; Dever, D.F.; White, D.,
Rare Earths. III. A mass-spectrometric investigation of the isomolecular oxygen-exchange reactions of lanthanum, cerium, praseodymium and neodymium with their monoxides,
J. Phys. Chem., 1961, 65, 1410. [all data]
Ames, Walsh, et al., 1967
Ames, L.L.; Walsh, P.N.; White, D.,
Rare earths. IV. Dissocaition energies of the gaseous monoxides of the rare earths,
J. Phys. Chem., 1967, 71, 2707. [all data]
Smoes, Coppens, et al., 1969
Smoes, S.; Coppens, P.; Bergman, C.; Drowart, J.,
Mass spectrometric determination of the dissociation energies of the gaseous rare earth monosulphides,
Trans. Faraday Soc., 1969, 65, 682. [all data]
Bergman, Coppens, et al., 1970
Bergman, C.; Coppens, P.; Drowart, J.; Smoes, S.,
Mass spectrometric determination of the dissociation energies of the gaseous rare earth monoselenides and monotellurides,
Trans. Faraday Soc., 1970, 66, 800. [all data]
Ackermann, Rauh, et al., 1976, 2
Ackermann, R.J.; Rauh, E.G.; Thorn, R.J.,
The thermodynamics of ionization of gaseous oxides; the first ionization potentials of the lanthanide metals and monoxides,
J. Chem. Phys., 1976, 65, 1027-1031. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, NIST Free Links, References
- 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.