ScO radical
- Formula: OSc
- Molecular weight: 60.9553
- CAS Registry Number: 12059-91-5
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Constants of diatomic molecules
Go To: Top, 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 January, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| B 2Σ+ | 20645.1 | 825.47 Z | 4.21 | [0.48308] 1 2 | 0.0032 | [6.74E-7] | [1.71986] | B ↔ X 3 R | 20571.15 Z | |||
| ↳Johnson and Johnson, 1931; Meggers and Wheeler, 1931; Jevons, 1932; missing citation; missing citation; missing citation; missing citation; Ortenberg, Glasko, et al., 1964; Weltner, McLeod, et al., 1967; missing citation | ||||||||||||
| A 2Πr | 16547.0 4 | 876.0 5 H | 5.00 | [0.50277] 6 | (0.0037) | [6.54E-7] | [1.68585] | A ↔ X 3 R | 16498.13 7 Z | |||
| ↳Johnson and Johnson, 1931; missing citation; Jevons, 1932; missing citation; missing citation; missing citation; missing citation; Ortenberg, Glasko, et al., 1964; Weltner, McLeod, et al., 1967; Athenour, Bacis, et al., 1970; missing citation | ||||||||||||
| A' 2Δr | 15135.9 8 | 845.9 H | 4.9 | A' → X 9 R | 15072.0 H | |||||||
| ↳missing citation | ||||||||||||
| 15029.8 | A' → X 9 R | 14965.9 H | ||||||||||
| ↳missing citation | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| X 2Σ+ 13 | 0 | [964.95] Z | 4.20 H | [0.51343] 10 2 | 0.0033 | [5.85E-7] | [1.66826] 11 | |||||
Notes
| 1 | Spin-splitting constant γ0 = (-)0.0670. |
| 2 | Potential energy curves Narasimhamurthy and Murthy, 1974. |
| 3 | Intensity distribution Femenias, Athenour, et al., 1974, missing citation. |
| 4 | A0 = +115.33; slight J dependence. |
| 5 | Corrected for head-origin separations. |
| 6 | Λ-type doubling Δ vfe(2Π3/2, v=0) = - 0.0655(J+1/2) + ..., and in 2Π3/2 [see Stringat, Athenour, et al., 1972]. |
| 7 | J'= 1/2(average of F1 and {F2}) relative to N"=0. The subband origins ({J'=0} relative to N"=0) are at 16440.61 and 16554.83 cm-1. |
| 8 | Te in good agreement with theoretical predictions Carlson, Ludena, et al., 1965, missing citation. |
| 9 | Observed in the "single-collision" Sc + O2 chemiluminescence spectrum. |
| 10 | Large magnetic hyperfine structure, 4b = +0.254 Adams, Klemperer, et al., 1968, Stringat, Athenour, et al., 1972 [see also Kasai and Weltner, 1965, Weltner, McLeod, et al., 1967]. |
| 11 | ESR s. 14 |
| 12 | Thermochemica1 value (mass-spectrometry). Ames, Walsh, et al., 1967, Coppens, Smoes, et al., 1967, Drowart, Pattoret, et al., 1967. |
| 13 | The 2Σ character of the ground state was theoretically predicted by Carlson, Ludena, et al., 1965 and experimentally verified by Kasai and Weltner, 1965, Weltner, McLeod, et al., 1967 [ESR spectrum and matrix absorption]. |
| 14 | In rare gas matrices Kasai and Weltner, 1965,104, McIntyre, Lin, et al., 1972. |
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.
Johnson and Johnson, 1931
Johnson, L.W.; Johnson, R.C.,
The band spectrum of yttrium oxide (YO). With a note on the ScO and LaO systems,
Proc. R. Soc. London A, 1931, 133, 207. [all data]
Meggers and Wheeler, 1931
Meggers, W.F.; Wheeler, J.A.,
The band spectra of scandium~, yttrium~, and lanthanum monoxides,
J. Res. Nat. Bur. Stand. US, 1931, 6, 239. [all data]
Jevons, 1932
Jevons, W.,
Report on band-spectra of diatomic molecules, Pub. The Physical Society, The University Press, London, 1932, 0. [all data]
Ortenberg, Glasko, et al., 1964
Ortenberg, F.S.; Glasko, V.B.; Dmitriev, A.I.,
Vibrational transition probabilities for band systems of some diatomic oxides. II.,
Sov. Astron. Engl. Transl., 1964, 8, 258, In original 332. [all data]
Weltner, McLeod, et al., 1967
Weltner, W., Jr.; McLeod, D., Jr.; Kasai, P.H.,
ESR and optical spectroscopy of ScO, YO, and LaO in neon and argon matrices; establishment of their ground electronic states,
J. Chem. Phys., 1967, 46, 3172. [all data]
Athenour, Bacis, et al., 1970
Athenour, C.; Bacis, R.; Femenias, J.-L.; Stringat, R.,
Sur le systeme orange de ScO excite a l'aide d'une lampe a cathode creuse,
C.R. Acad. Sci. Paris, Ser. B, 1970, 271, 567. [all data]
Narasimhamurthy and Murthy, 1974
Narasimhamurthy, B.; Murthy, N.S.,
Potential energy curves for the B2Σ and X2Σ states of scandium monoxide,
Pramana, 1974, 2, 269. [all data]
Femenias, Athenour, et al., 1974
Femenias, J.L.; Athenour, C.; Stringat, R.,
Theoretical calculations of relative intensities in hyperfine diatomic transitions,
Can. J. Phys., 1974, 52, 361. [all data]
Stringat, Athenour, et al., 1972
Stringat, R.; Athenour, C.; Femenias, J.L.,
Analyse rotationnelle de la bande (0,0) du systeme orange de ScO,
Can. J. Phys., 1972, 50, 395. [all data]
Carlson, Ludena, et al., 1965
Carlson, K.D.; Ludena, E.; Moser, C.,
Electronic ground state and wavefunctions for scandium monoxide,
J. Chem. Phys., 1965, 43, 2408. [all data]
Adams, Klemperer, et al., 1968
Adams, A.; Klemperer, W.; Dunn, T.M.,
Rotational analysis of the blue-green system of scandium oxide,
Can. J. Phys., 1968, 46, 2213. [all data]
Kasai and Weltner, 1965
Kasai, P.H.; Weltner, W., Jr.,
Ground states and hyperfine-structure separations of ScO, YO, and LaO from ESR spectra at 4°K,
J. Chem. Phys., 1965, 43, 2553. [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]
Coppens, Smoes, et al., 1967
Coppens, P.; Smoes, S.; Drowart, J.,
Mass spectrometric determination of the dissociation energies of the molecules GeS, ScS, YS, LaS, and CeS,
Trans. Faraday Soc., 1967, 63, 2140. [all data]
Drowart, Pattoret, et al., 1967
Drowart, J.; Pattoret, A.; Smoes, S.,
Mass spectrometric studies of the vaporization of refractory compounds,
Proc. Br. Ceram. Soc., 1967, 8, 67. [all data]
McIntyre, Lin, et al., 1972
McIntyre, N.S.; Lin, K.C.; Weltner, W., Jr.,
ESR and optical spectra of the ScS and YS molecules,
J. Chem. Phys., 1972, 56, 5576. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
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