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Cobalt monohydride

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 December, 1974

Symbols used in the table of constants
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 59CoH
A2           A2 larrow X2 R 21982 H
Smith, 1973
A1 Omega=4 4  [1527.8] Z 1   6.701 2 0.305  [0.000620] 3  1.5934 A1 rarrow X1 R 22243.3 1 Z
missing citation; missing citation
X1 Omega=4 4 0    [7.151]   [0.000405]  [1.5424]  


1Contrary to the definitions adopted in these tables the band origins here do not include the J-independent terms -Omega2Bv of the rotational energy expressions for the upper and lower states: the zero lines are obtained by adding -Omega2(B'v - B"v) to the values given in the table. Heimer Heimer, 1937, Heimer, 1937, 2 uses a different definition.
2v=0 perturbed from J ~ 10 to J ~ 20.
3D1 = 5.90E-4.
4Possibly 3Phi4 and 3Phi3; 3Phi2 not identified.
5Omega-type doubling Delta(v=0) = 0.36E-8J6. Deltav(v=1) = 0.45E-8J6.
6D1 = 1.326E-4.
7Perturbations in all three observed vibrational levels Klynning and Kronekvist, 1972.
8x2 ~ 800 cm-1, estimated from the difference B0(Omega=3) - B0(Omega=4).
9Constants derived from the upper Omega-type doubling component; Deltav = 3.42E-8J6+...
10H0 = +2.56E-9; D1 = 1.157E-4, H1 = +5.9E-9; D2 = 1.09E-4.


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

Smith, 1973
Smith, R.E., Diatomic hydride and deuteride spectra of the second row transition metals, Proc. R. Soc. London A, 1973, 332, 113. [all data]

Heimer, 1937
Heimer, A., Dissertation, Stockholm, 1937, 0. [all data]

Heimer, 1937, 2
Heimer, A., Das bandenspektrum des kobalthydrids, Z. Phys., 1937, 104, 448. [all data]

Klynning and Kronekvist, 1972
Klynning, L.; Kronekvist, M., Rotational analysis of the A-X band system of CoD, Phys. Scr., 1972, 6, 61. [all data]


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