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Hydroxyl cation


Gas phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Quantity Value Units Method Reference Comment
gas,1 bar182.78J/mol*KReviewChase, 1998Data last reviewed in December, 1970

Constants of diatomic molecules

Go To: Top, Gas phase 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 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, Gas phase 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.

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

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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