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Mercury 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, 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 (202)Hg81Br
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
E (40720) (166) (1.1)        E rarrow X 1 (40710)
Rao and Rao, 1944
D 2Pi3/2 38574.4 228.5 2 H 0.950        D lrarrow X V 38595.5 H
Wieland, 1929; missing citation; missing citation
C (2Pi1/2) 34722.0 278.6 3 H 1.82        C lrarrow X V 34767.5 3 H
Wieland, 1929; Wieland, 1932; Howell, 1944; Wieland, 1948; missing citation; missing citation
B 2Sigma+ 23485.0 135.075 H 0.275        B lrarrow X R 23459.5 H
Wieland, 1939; Wieland, 1948, 2; missing citation
StateTeomegaeomegaexeomegaeyeBealphaegammaeDebetaereTrans.nu00
X 2Sigma+ 0 186.47 H 0.9665 -0.0090        
Wieland, 1960

Notes

1Headless diffuse bands.
2Constants for 202Hg81Br.
3From Patel and Darji, 1968, Greig, Gunning, et al., 1970. Earlier analyses of C-X by Sastry, 1941, Sastry, 1941, 2 and Krishnamurthy, 1958 as well as the suggested existence of an additional system in the region 36100 - 37000 cm-1 Krishnamurthy, 1958, Patel and Darji, 1968 are not convincing.

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.

Rao and Rao, 1944
Rao, K.R.; Rao, G.V.S.R., A new band system of the HgBr molecule, Indian J. Phys., 1944, 18, 281. [all data]

Wieland, 1929
Wieland, K., Bandenspektren der quecksilber-, cadmium- und zinkhalogenide, Helv. Phys. Acta, 1929, 2, 46. [all data]

Wieland, 1932
Wieland, K., Absorptions- und fluoreszenzspektren dampfformiger quecksilberhalogenide. II. HgBr2 und HgCl2, Z. Phys., 1932, 77, 157. [all data]

Howell, 1944
Howell, H.G., The ultra-violet spectra and electron configuration of HgF and related halide molecules, Proc. R. Soc. London A, 1944, 182, 95. [all data]

Wieland, 1948
Wieland, K., Spectres d'absorption des halogenures de mercure (HgX2) en equilibre thermique au-dessus de 1000°C, J. Chim. Phys. Phys.-Chim. Biol., 1948, 45, 3. [all data]

Wieland, 1939
Wieland, K., Vereinfachung des fluoreszenzspektrums von HgBr durch fremdgas-zusatz, Helv. Phys. Acta, 1939, 12, 295. [all data]

Wieland, 1948, 2
Wieland, K., Molekulspektren mit Ionencharakter und ihre Beeinflussung durch Fremdgase in Contribution a l'Etude de la Structure Moleculaire, Desoer, Liege, ed(s)., 1948, 229-238. [all data]

Wieland, 1960
Wieland, K., Bandensysteme B(2«SIGMA»+) --> X(2«SIGMA»+) und Dissoziationswerte der Radikale HgJ und HgBr, Z. Elektrochem., 1960, 64, 761. [all data]

Patel and Darji, 1968
Patel, M.M.; Darji, A.B., Band spectrum of mercury bromide in the ultraviolet region, Indian J. Phys., 1968, 42, 110. [all data]

Greig, Gunning, et al., 1970
Greig, G.; Gunning, H.E.; Strausz, O.P., Reactions of metal atoms. II. The combination of mercury and bromine atoms and the dimerization of HgBr, J. Chem. Phys., 1970, 52, 3684. [all data]

Sastry, 1941
Sastry, M.G., Ultra violet band spectrum of HgBr, Curr. Sci., 1941, 10, 197. [all data]

Sastry, 1941, 2
Sastry, M.G., The ultra-violet band spectrum of mercury bromide, Proc. Natl. Inst. Sci. India, 1941, 7, 359. [all data]

Krishnamurthy, 1958
Krishnamurthy, V.G., Ultraviolet bands of mercury bromide, Z. Phys., 1958, 152, 242. [all data]


Notes

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