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Cyanogen 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 bar213.44J/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 September, 1976

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 12C14N+
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
d 1Pi (a + 46253) [890.76] Z 1  [1.6018] 2  [0.0000195] 2  [1.2762] d rarrow b 3 R 37544.49 Z
missing citation; missing citation
f 1Sigma a + 45533.6 2670.5 Z 46.9  1.903 4 0.032  [0.0000047]  1.171 f rarrow b V 37703.14 Z
missing citation
           f rarrow a 5 45844.65 Z
missing citation
c 1Sigma (a + 31771) (1265) 6 (11)  (1.403) 6 (0.002)  [0.000013]  (1.364) c rarrow a R 31381.60 6 Z
missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
b 1Pi a + 8313.6 1688.35 Z 15.12  1.6767 0.0191 -0.0005 [0.00000684]  1.2473  
a 1Sigma a 2033.05 Z 16.14  1.8964 0.0188  [7.0E-06]  1.1729  

Notes

1DeltaG(3/2) = 548.54, DeltaG(5/2) = 542.18, DeltaG(7/2) = 550.36. Vibrational numbering uncertain.
2B1 = 1.4319, D1 = 47.3E-6 B2 = 1.3023, D2 = l7.9E-6 B3 = 1.2598, D3 = 19.4E-6 B4 = 1.2196, D4 = 9E-6 Local perturbations in nearly all vibrational levels. Vibrational numbering uncertain.
3tau = 24 ns Smith, 1969.
4Perturbations; see p.251 of Mulliken, 1960.
50-0 sequence consisting of four headless bands.
6Vibrational numbering uncertain. Homogeneous perturbations by an unidentified state.
7From D00(CN) and the ionization potentials of CN and C.

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]

Smith, 1969
Smith, W.H., Radiative Lifetimes and Total Transition Probabilities for Some Polyatomic Species, J. Chem. Phys., 1969, 51, 8, 3410, https://doi.org/10.1063/1.1672528 . [all data]

Mulliken, 1960
Mulliken, R.S., Some neglected subcases of predissociation in diatomic molecules, J. Chem. Phys., 1960, 33, 247. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Constants of diatomic molecules, References