NI


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 14N127I
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
X 3Σ- 0 [590] 1          
Minkwitz and Froben, 1976
Vibrational sp. 1

Notes

10bserved in the condensate at 10 K of the products of a discharge in an N2/I2 mixture. The observation of a corresponding band at 573 cm-1 for 15NI supports the assignment.

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.

Minkwitz and Froben, 1976
Minkwitz, R.; Froben, F.W., Low temperature infrared measurements of NI, Chem. Phys. Lett., 1976, 39, 3, 473-475. [all data]


Notes

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