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iron oxide anion

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, 1977

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 (56)Fe16O-
X 0 740 1        1.63 2  


1From the laser photoelectron spectrum of FeO- Engelking and Lineberger, 1977.
2Estimated Engelking and Lineberger, 1977 from relative vibrational intensities in the photoelectron spectrum of FeO-.
3Thermochemica1 value (mass-spectrom.) Cheetam and Barrow, 1967, Balducci, DeMaria, et al., 1971, Hildenbrand, 1975. See also Brewer and Mastick, 1951, Lagerqvist and Huldt, 1953.
4Electron impact appearance potential Hildenbrand, 1975.
5The similarity of the vibrational constants suggests a common lower state for the five systems. Uncertain. Pi
6From the rotational analysis Barrow and Senior, 1969 of four bands of the short-wavelength component of b-A. They appear to be the Omega'= Omega" = 0 subbands of a quintet or septet Sigma-Sigma transition. An earlier analysis by Dhumwad and Narasimham, 1967 is incorrect.
7Lifetime tau ~ 500 ns West and Broida, 1975.
8Rotationa1 analysis using tunable-laser excited fluorescence spectroscopy West and Broida, 1975.
9Lifetime tau ~ 450 ns West and Broida, 1975.
10From a re-analysis of B rarrow X by Engelking and Lineberger, 1977. The FeO- photoelectron spectrum Engelking and Lineberger, 1977 gives a ground state frequency of 970 ± 60 cm-1
11Symmetries assigned Engelking and Lineberger, 1977 on the basis of ab initio calculations Bagus and Preston, 1973.
12From 0-0 band assignments for B rarrow X Engelking and Lineberger, 1977 and B rarrow A Bass and Benedict, 1952, West and Broida, 1975. From the FeO- photoelectron spectrum Engelking and Lineberger, 1977 obtain 3990 ± 100 cm-1.
13The IR transition strength measured at 880 cm-1 von Rosenberg and Wray, 1972, Fissan and Sulzmann, 1972 requires reinterpretation in view of the recent reassignment of the low-lying states Engelking and Lineberger, 1977.
14From D00(FeO) and the electron affinities of FeO and O.


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

Engelking and Lineberger, 1977
Engelking, P.C.; Lineberger, W.C., Laser photoelecton spectrometry of FeO-: Electron affinity, electronic state separations, and ground state vibrations of iron oxide, and a new ground state assignment, J. Chem. Phys., 1977, 66, 5054. [all data]

Cheetam and Barrow, 1967
Cheetam, C.J.; Barrow, R.F., Adv. High Temp. Chem., 1967, 1, 7. [all data]

Balducci, DeMaria, et al., 1971
Balducci, G.; DeMaria, G.; Guido, M.; Piacente, V., Dissociation energy of FeO, J. Chem. Phys., 1971, 55, 2596. [all data]

Hildenbrand, 1975
Hildenbrand, D.L., Thermochemistry of molecular FeO, FeO+ and FeO2, Chem. Phys. Lett., 1975, 34, 352. [all data]

Brewer and Mastick, 1951
Brewer, L.; Mastick, D.F., The stability of gaseous diatomic oxides, J. Chem. Phys., 1951, 19, 834. [all data]

Lagerqvist and Huldt, 1953
Lagerqvist, A.; Huldt, L., Die Dissoziationsenergien der gasformigen Oxyde CrO und FeO, Z. Naturforsch. A, 1953, 8, 493. [all data]

Barrow and Senior, 1969
Barrow, R.F.; Senior, M., Ground state of gaeous FeO, Nature (London), 1969, 223, 1359. [all data]

Dhumwad and Narasimham, 1967
Dhumwad, R.K.; Narasimham, N.A., Rotational analysis of some of the bands of the orange system of FeO, Proc. Indian Acad. Sci. Sect. A, 1967, 64, 283. [all data]

West and Broida, 1975
West, J.B.; Broida, H.P., Chemiluminescence and photoluminescence of diatomic iron oxide, J. Chem. Phys., 1975, 62, 2566. [all data]

Bagus and Preston, 1973
Bagus, P.S.; Preston, H.J.T., Lowest 5«SIGMA»+ state of FeO: an ab initio investigation, J. Chem. Phys., 1973, 59, 2986. [all data]

Bass and Benedict, 1952
Bass, A.M.; Benedict, W.S., A new infrared band system of FeO, Astrophys. J., 1952, 116, 652. [all data]

von Rosenberg and Wray, 1972
von Rosenberg, C.W., Jr.; Wray, K.L., Shock tube studies on Fe(CO)5+O2: 11«mu» FeO emission and kinetics, J. Quant. Spectrosc. Radiat. Transfer, 1972, 12, 531. [all data]

Fissan and Sulzmann, 1972
Fissan, H.; Sulzmann, K.G.P., Absorption coefficients for the infrared vibration-rotation spectrum of FeO, J. Quant. Spectrosc. Radiat. Transfer, 1972, 12, 979. [all data]


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