Manganese monohydride


Gas phase ion energetics 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.

Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
B - John E. Bartmess

View reactions leading to HMn+ (ion structure unspecified)

Electron affinity determinations

EA (eV) Method Reference Comment
0.869 ± 0.010LPESStevens, Feigerle, et al., 1983B

Ionization energy determinations

IE (eV) Method Reference Comment
7.8DERLias, Bartmess, et al., 1988LL

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 October, 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 55MnH
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
Complex rotational structure from 22600 to 24000 (max. 23360 - 23930) cm-1; in emission.
missing citation
Open but very strongly perturbed rotational structure in the region 21270 - 22580 cm-1; in emissionand absorption. Probably quintet transition.
missing citation; missing citation; Smith, 1973
Extremely complicated R shaded band with very dense structure centered around 20900 cm-1; in emission and absorption. Probably quintet system.
Heimer, 1936; missing citation; missing citation; Smith, 1973
Complex rotational structure from 11200 to 14500 cm-1; in emission.
missing citation
StateTeωeωexeωeyeBeαeγeDeβereTrans.ν00
A 7Π 17597 1 2 [1623] 3 (33)  6.425 4 5 0.187  [3.62E-4] 6  1.628 A ↔ X V 17666 3
Heimer, 1936; missing citation; missing citation; Nevin, 1945; missing citation; Nevin and Stephens, 1953
X 7Σ 0 1 1548.0 Z 28.8  5.6841 4 0.1570 7  [3.039E-4] 8  1.7311  
Hayes, McCarvill, et al., 1957; Kovacs and Scari, 1959; Kovacs and Pacher, 1975

Notes

1For and ab initio calculation of these two states see Bagus and Schaefer, 1973.
2A = 40.6 [see Kovacs and Pacher, 1975].
3From approximate origins for the F4 component.
4Approxiamte ("effective") constants. Improved ("true") constants for MnH (v=0) together with spin-orbit, spin-spin, spin-rotation interaction and l-uncoupling constants in Kovacs and Pacher, 1975. See also Kovacs, 1959, Pacher, 1974.
5Perturbations.
6D1 = 3.64E-4; H0 = 8.2E-9, H1 = 7.4E-9.
7γe= -0.0019.
8D1 = 3.053E-4; D2 = 3.08E-4; H0 = 9.33E-9; H1 = 9.79E-9; H2 = 10.2E-9. Hv values in Pacher, 1974 differ by an order of magnitude.
9From the values for MnH.
10H0 = 1.2E-9.
11D1 = 8.22E-5; D2 = 8.36E-5; H0 = 1.41E-9; H1 = 2.17E-9, H2 = 2.93E-9.

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.

Stevens, Feigerle, et al., 1983
Stevens, A.E.; Feigerle, C.S.; Lineberger, W.C., Laser photoelectron spectroscopy of MnH- and FeH-: Electronic structures of the metal hydrides, identification of a low spin excited state of MnH, J. Chem. Phys., 1983, 78, 5420. [all data]

Lias, Bartmess, et al., 1988
Lias, S.G.; Bartmess, J.E.; Liebman, J.F.; Holmes, J.L.; Levin, R.D.; Mallard, W.G., Gas-phase ion and neutral thermochemistry, J. Phys. Chem. Ref. Data, Suppl. 1, 1988, 17, 1-861. [all data]

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, 1936
Heimer, T., Das bandenspektrum von MnH, Die Naturwissenschaften, 1936, 24, 521. [all data]

Nevin, 1945
Nevin, T.E., The spectrum of manganese hydride, MnH. II. The structure of the A7Π and X7Σ states, Proc. R. Ir. Acad. Sect. A:, 1945, 50, 123-137. [all data]

Nevin and Stephens, 1953
Nevin, T.E.; Stephens, D.V., New observations on the band spectra of MnH and MnD, Proc. R. Ir. Acad. Sect. A:, 1953, 55, 109-116. [all data]

Hayes, McCarvill, et al., 1957
Hayes, W.; McCarvill, P.D.; Nevin, T.E., The structure of the X7Σ state of MnH and MnD, Proc. Phys. Soc. London Sect. A, 1957, 70, 904. [all data]

Kovacs and Scari, 1959
Kovacs, I.; Scari, O., Intensity formulae for 7Π = 7Σ band, Acta Phys. Acad. Sci. Hung., 1959, 9, 423. [all data]

Kovacs and Pacher, 1975
Kovacs, I.; Pacher, P., Fine structure of 7Π and 7Σ states in diatomic molecules, J. Phys. B:, 1975, 8, 796. [all data]

Bagus and Schaefer, 1973
Bagus, P.S.; Schaefer, H.F., III, 7Σ+ and 7Π states of manganese hydride, J. Chem. Phys., 1973, 58, 1844. [all data]

Kovacs, 1959
Kovacs, J., On the structure of multiplet Σ states in diatomic molecules, Proc. R. Ir. Acad. Sect. A:, 1959, 60, 15-26. [all data]

Pacher, 1974
Pacher, P., Fine structure of septet states in diatomic molecules, the X7Σ+ state of MnH, Acta Phys. Acad. Sci. Hung., 1974, 35, 73. [all data]


Notes

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