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Hydroxyl cation


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 May, 1977

Symbols used in the table of constants
SymbolMeaning
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)
Diatomic constants for 16OH+
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
b 1Sigma+ (29050) [2981] 1   [16.320] 1 (0.732) 1  [19.2E-4] 1  1.032 (b-X) 29058.8 1
A 3Pii 0-           A rarrow X 2 3 R 28034.04 4
missing citation; missing citation
A 3Pii 0+           A rarrow X 2 3 R 28028.31 4
missing citation; missing citation
A 3Pii 1 28438.55 2133.65 Z 79.55  13.7916 5 6 0.8889 .01730 [22.495E-4] 7  1.1354 A rarrow X 2 3 R 27948.43 4
missing citation; missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A 3Pii 2           A rarrow X 2 3 R 27864.31 4
missing citation; missing citation
a 1Delta 17660 8           
X 2Sigma- 0 3113.37 Z 78.52  16.7943 9 0.7494 .01097 [19.174E-4] 10  1.0289  

Notes

1Constants derived from the perturbations in A 3Pi. The b-X transition is not observed.
2Lifetime tau(v=0) = 0.89 mus Brzozowski, Elander, et al., 1974; similar results for v=1,3.
3Vibrational intensity distribution (branching ratios), variation of the transition moment with r Gerard, Govers, et al., 1976.
4Subband origins as defined by Merer, Malm, et al., 1975. From the data for the OD+ A 3Pi(v=0) level Merer, Malm, et al., 1975 estimate the true spin-orbit and spin-spin interaction parameters A = -83.83 cm-1 Merer, Malm, et al., 1975 and 2alpha = -5.92 cm-1 Merer, Malm, et al., 1975.
5Lambda-doubling constants p0 = -0.251, q0 = +0.0478; for v=1,2 see Merer, Malm, et al., 1975.
6Perturbations by b 1Sigma+.
7H0 = +10.4E-8; other Dv, Hv values for v leq 2 in Merer, Malm, et al., 1975.
8From the photoelectron spectrum Katsumata and Lloyd, 1977.
9Spin-splitting constants for v=0: lambda0 = 2.134 cm-1 and gamma0 = -0.1478 cm-1; similar results for v=1 and 2.
10H0 = 12.39E-8; values for D1, D2 in Merer, Malm, et al., 1975.
11D00(OH) + I.P.(H) - I.P.(OH).
12A rather complete list and critical assessment of earlier references is given in Merer, Malm, et al., 1975.
13From D00(OH+).
14Lambda-doubling constants p0 = -0.132, q0 = +0.01222 cm-1; for v=1,2,3 see Merer, Malm, et al., 1975.
15Perturbations by b 1Sigma+ and a 1Delta.
16H0 = +2.02E-8; other Dv, Hv values for v leq 3 in Merer, Malm, et al., 1975.
17Lifetime tau(v=0) = 1.06 mus Brzozowski, Erman, et al., 1975.
18This level at 29434 cm-1 is only observed through perturbations in A 3Pi(v=1); D6 = 4.8E-4. The v=5 level produces a weak perturbation in A 3Pi(v=0).
19Spin splitting constants lambda0 = +2.141, gamma0 = -0.0790 cm-1; similar constants for v=1,2 Merer, Malm, et al., 1975.
20H0 = 2.17E-8; values for D1, D2, D3 in Merer, Malm, et al., 1975.

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.

Brzozowski, Elander, et al., 1974
Brzozowski, J.; Elander, N.; Erman, P.; Lyyra, M., Lifetimes of excited levels in some important ion-molecules part I: NH+, OH+ and SH+, Phys. Scr., 1974, 10, 241-243. [all data]

Gerard, Govers, et al., 1976
Gerard, M.; Govers, T.R.; van de Runstraat, C.A.; Marx, R., Vibrational branching ratios for the A3«PI»i --> X3«SIGMA»- system of OH+ and OD+, Chem. Phys. Lett., 1976, 44, 1, 154-158. [all data]

Merer, Malm, et al., 1975
Merer, A.J.; Malm, D.N.; Martin, R.W.; Horani, M.; Rostas, J., The ultraviolet emission spectra of OH+ and OD+. Rotational structure and perturbations in the A3«PI»i - X3«SIGMA»- transition, Can. J. Phys., 1975, 53, 251-283. [all data]

Katsumata and Lloyd, 1977
Katsumata, S.; Lloyd, D.R., The photoelectron spectra of the OH and OD radicals, Chem. Phys. Lett., 1977, 45, 519. [all data]

Brzozowski, Erman, et al., 1975
Brzozowski, J.; Erman, P.; Lew, H., Lifetimes of excited states in D2O+ and OD+ and relative lifetimes between the normal and deuterated species, Chem. Phys. Lett., 1975, 34, 2, 267-270. [all data]


Notes

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