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Tantalum monoxide


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 June, 1975

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 181Ta16O
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
Weak emission bands at 35476 and 36379 cm-1, no analysis.
Cheetham and Barrow, 1967
V (2Delta)5/2     [0.375] 1 2   [3.3E-7]  [1.749] V rarrow X2 R (33280) 1 (Z)
Cheetham and Barrow, 1967
U (2Delta)5/2     [0.3715] 2   [3.3E-7]  [1.7572] U rarrow X2 R (33110) (Z)
Cheetham and Barrow, 1967
T (2Delta)5/2 35954 (891)   [0.37688] 3   [2.70E-7]  [1.74461] T rarrow X2 R 32380.77 Z
Cheetham and Barrow, 1967
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
S (2Delta)5/2 35864 (871)   [0.37536] 3   [2.79E-7]  [1.74814] S rarrow X2 R 32280.40 Z
Cheetham and Barrow, 1967
R (2Delta)3/2 32445 (885)   [0.38393] 3   [2.89E-7] 4  [1.72852] R rarrow X1 R 32373.60 Z
Cheetham and Barrow, 1967
Q (29306) [(895)] 5         Q larrow X1 (29240) 5
Weltner and McLeod, 1965
Q' (2Delta)5/2 27353.0 [896.1] Z (4.07)  0.381834 6 0.00219  [2.744E-7]  1.73326 Q' rarrow X2 R 23785.20 Z
Cheetham and Barrow, 1967
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
P (2Delta)3/2 26736.19 902.68 Z 4.08  0.377500 7 0.00181  [2.573E-7]  1.74318 P lrarrow X1 R 26673.04 Z
Premaswarup, 1955; missing citation; Premaswarup and Barrow, 1957; Weltner and McLeod, 1965; Cheetham and Barrow, 1967
O (26342) (913) 5 (4.5)        O larrow X1 (26284) 5
Weltner and McLeod, 1965
O' (2Phi)7/2 26186 (899)   [0.381304]   [2.745E-7]  [1.734462] O' rarrow X1 R 22616.07 Z
Cheetham and Barrow, 1967
N (2Pi)3/2 25657 (900)   [0.377207]   [2.649E-7]  [1.74386] N rarrow X2 R 22087.70 Z
Cheetham and Barrow, 1967
           N lrarrow X1 R 25593.13 Z
Weltner and McLeod, 1965; Cheetham and Barrow, 1967
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
M (2Phi)5/2 24123.7 [890.31] Z 4.1 H  0.377064 0.00184  [2.635E-7]  1.74419 M lrarrow X1 R 24058.42 Z
missing citation; Premaswarup and Barrow, 1957; Weltner and McLeod, 1965; Cheetham and Barrow, 1967
L (2Pi)1/2 23408.3 [887.70] Z 4.1 H  0.377424 8 0.00195  [2.706E-7]  1.74335 L lrarrow X1 R 23341.74 Z
missing citation; Premaswarup and Barrow, 1957; Weltner and McLeod, 1965; Cheetham and Barrow, 1967
K' (2Phi)7/2 22981.58 903.06 Z 3.56  0.38081 0.00192  [2.756E-7]  1.73559 K' rarrow X2 R 19413.32 Z
Cheetham and Barrow, 1967
(22396) (901.7) 5 (3.34)        K lrarrow X1 (22333) 5
Weltner and McLeod, 1965
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
J (22196) (892) 5 (3)        J larrow X1 (22128) 5
Weltner and McLeod, 1965
(I)Ne matrix emission and absorption spectra suggest the existance of an additional state close to H.
Weltner and McLeod, 1965
H (20868) [(900)] 9         H lrarrow X1 (20805) 9
Weltner and McLeod, 1965
G           G larrow X1 (18007) 5
Weltner and McLeod, 1965
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
F (16770) [(922)] 5         F larrow X1 (16718) 5
Weltner and McLeod, 1965
F 10           R 16051 Z
Cheetham and Barrow, 1967
E (2Phi)5/2 15928 (935) 5 (5)  [0.38618] 11   [3.26E-7]  [1.72348] E lrarrow X1 R 15880.62 Z
Weltner and McLeod, 1965; Cheetham and Barrow, 1967
D (14437) (943) 12         D lrarrow X1 (14395) 5 13
Weltner and McLeod, 1965; Cheetham and Barrow, 1967
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
C (2Delta)3/2 13612 (942)   [0.387547]   [2.624E-7]  [1.72044] C lrarrow X1 R 13569.27 Z
Weltner and McLeod, 1965; Cheetham and Barrow, 1967
B (2Phi)5/2 12900 (931)   [0.386851]   [2.674E-7]  [1.72198] B lrarrow X1 R 12852.02 Z
Weltner and McLeod, 1965; Cheetham and Barrow, 1967
A (12134) [(939)] 14         A lrarrow X1 (12090) 15
Weltner and McLeod, 1965; Cheetham and Barrow, 1967
A' (2Pi)1/2     [0.389]     [1.717] A' rarrow X1 R (11062) (Z)
Cheetham and Barrow, 1967
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
A" (2Delta)3/2 10908 (933)   [0.387291]   [2.668E-7]  [1.72100] A" rarrow X1 R 10860.95 Z
Cheetham and Barrow, 1967
X2 (2Delta)5/2 3504.39 1030.81 Z 3.59  0.403584 0.00187  [2.503E-7]  1.68591  
X1 (2Delta)3/2 0 1028.69 Z 3.51  0.402840 0.00182  [2.450E-7]  1.68746 16  
Weltner and McLeod, 1965

Notes

1This level could possibly be T(v=1).
2Extensive perturbations.
3Perturbations.
4 Cheetham and Barrow, 1967 give 2.289 which appears to be a misprint.
5From the Ne matrix absorption spectrum.
6Perturbations in v=0.
7v=1 perturbed by a state of higher B value.
8Lambda-type doubling Deltav(v=0) = 0.0927(J+1/2).
9From Ne matrix absorption and emission spectra.
10Incompletely analysed emission band.
11Perturbed by a state of larger B value.
12Calculated from Ta18O frequency in neon.
13In the gas phase probably at 14362 cm-1.
14From the Ar matrix absorption spectrum.
15From Cheetham and Barrow, 1967; the observed band is too weak for analysis.
16IR spectrum 18
17Average of two thermochemical values (mass-spectrometry). Inghram, Chupka, et al., 1957, Krikorian and Carpenter, 1965
18In rare gas matrices.

References

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

Cheetham and Barrow, 1967
Cheetham, C.J.; Barrow, R.F., Rotational analysis of electronic bands of gaseous TaO, Trans. Faraday Soc., 1967, 63, 1835. [all data]

Weltner and McLeod, 1965
Weltner, W., Jr.; McLeod, D., Jr., Spectroscopy of TaO and TaO2 in Neon and Argon Matrices at 4° and 20°K, J. Chem. Phys., 1965, 42, 3, 882, https://doi.org/10.1063/1.1696076 . [all data]

Premaswarup, 1955
Premaswarup, D., Vibrational analysis of the tantalum oxide bands, Indian J. Phys., 1955, 29, 109. [all data]

Premaswarup and Barrow, 1957
Premaswarup, D.; Barrow, R.F., Rotational analysis of the tantalum oxide bands, Nature (London), 1957, 180, 602. [all data]

Inghram, Chupka, et al., 1957
Inghram, M.G.; Chupka, W.A.; Berkowitz, J., Thermodynamics of the Ta-O system: the dissociation energies of TaO and TaO2, J. Chem. Phys., 1957, 27, 569. [all data]

Krikorian and Carpenter, 1965
Krikorian, O.H.; Carpenter, J.H., Enthalpies of formation of gaseous tantalum oxide and tantalum dioxide, J. Phys. Chem., 1965, 69, 4399. [all data]


Notes

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