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indium bromide

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: K.P. Huber and G. Herzberg

Data collected through January, 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 115In81Br
C 1Pi (34000) 1          C larrow X 35053 2
missing citation
B 3Pi1 27382.2 218.0 3 H 1.60        B lrarrow X VR 27380.5 H
missing citation; missing citation
A 3Pi0+ 26596.0 227.4 3 H 1.58        A lrarrow X V 26599.0 H
missing citation; missing citation
X 1Sigma+ 0 221.0 H 0.65  0.0548944 4 0.0001862 4  (1.35)  2.54318 5  
Barrett and Mandel, 1958


1Fluctuation bands with various v"; shallow upper potential curve.
2Vertical transition from v" = 0.
3Constants for 115In79Br are given by Lakshminarayana and Harnath, 1970, who propose small changes in the vibrational numbering of the B-X bands observed by Wehrli and Miescher, 1933.
4Calculated from the rotational constants for the 115In79Br isotope Barrett and Mandel, 1958.
5Microwave sp. 8
6From thermochemical data and spectroscopic evidence about the 1Pi and 3Pi excited states; see Barrow, 1960. in good agreement with 4.02 eV obtained by flame photometry Bulewicz, Phillips, et al., 1961.
7Adiabatic potential from the photoelectron spectrum Berkowitz and Dehmer, 1972; vertical potential 9.41 eV.
8Electric quadrupole coupling constants.
9From D00(InBr) + I.P.(In) - I.P.(InBr).
10The 2Pi photoelectron peak is very broad with a maximum at 10.20 eV (2Pi1/2?), and a shoulder at ~ 9.8 eV (2Pi3/2?). These vertical potentials are close to the dissociation limits In+(1S) + Br(2P1/2, 2Pi3/2) at 10.24 and 9.78 eV, respectively, and seem compatible with the predicted instability or near instability of A 2Pi.


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

Barrett and Mandel, 1958
Barrett, A.H.; Mandel, M., Microwave spectra of the Tl, In, and Ga monohalides, Phys. Rev., 1958, 109, 1572. [all data]

Lakshminarayana and Harnath, 1970
Lakshminarayana, A.; Harnath, P.B.V., The emission spectrum of indium monobromide, Indian J. Phys., 1970, 44, 504. [all data]

Wehrli and Miescher, 1933
Wehrli, M.; Miescher, E., Die spektren der indiumhalogenide, Helv. Phys. Acta, 1933, 6, 457. [all data]

Barrow, 1960
Barrow, R.F., Dissociation energies of the gaseous monohalides of boron, aluminium, gallium, indium, and thallium, Trans. Faraday Soc., 1960, 56, 952. [all data]

Bulewicz, Phillips, et al., 1961
Bulewicz, E.M.; Phillips, L.F.; Sugden, T.M., Determination of dissociation constants and heats of formation of simple molecules by flame photometry. Part 8. Stabilities of the gaseous diatomic halides of certain metals, Trans. Faraday Soc., 1961, 57, 921. [all data]

Berkowitz and Dehmer, 1972
Berkowitz, J.; Dehmer, J.L., Photoelectron spectroscopy of high-temperature vapors. II. Chemical bonding in the Group III monohalides, J. Chem. Phys., 1972, 57, 3194. [all data]


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