mercury chloride
- Formula: ClHg
- Molecular weight: 236.04
- CAS Registry Number: 7546-30-7
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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 January, 1975
| Symbol | Meaning |
|---|---|
| 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) |
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D (2Π3/2) | 39703.5 | 341.8 HQ | 1.87 | D ↔ X V | 39727.7 HQ | |||||||
| ↳Wieland, 1929; missing citation; missing citation; missing citation | ||||||||||||
| C (2Π1/2) | (35782) | (383) 1 | C ↔ X (V) | 35828 | ||||||||
| ↳Wieland, 1929; Wieland, 1932; missing citation; missing citation; Wieland, 1941; Howell, 1944; Wieland, 1948; Krishnamurthy, 1958; missing citation | ||||||||||||
| B 2Σ+ | 23421.0 | 192.0 2 H | 0.50 2 | B → X RV | 23371.0 H | |||||||
| ↳Wieland, 1929; Wieland, 1932; missing citation; missing citation; Wieland, 1948, 2 | ||||||||||||
| X 2Σ+ | 0 | 292.61 H | 1.6025 3 | [(2.23)] 4 | ||||||||
Notes
| 1 | From the absorption spectrum Horne, Gosavi, et al., 1968. |
| 2 | For v ≥ 30: ωe = 186.2, ωexe = 0.40. |
| 3 | ωeze = -0.000033. All constants refer to R heads of B-X. From Q heads of D-X ωe = 293.4, ωexe = 1.82. |
| 4 | From electron diffraction data Maxwell and Mosley, 1940; according to Wieland, 1941 more likely corresponding to the Hg-Cl separation in HgCl2 than in HgCl. |
References
Go To: Top, Constants of diatomic molecules, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Wieland, 1941
Wieland, K.,
Das langwellige emissions- und fluoreszenzspektrum (λλ 5700-3000 ÅE.) von naturlichem HgCl und von kunstlich angereichertem HgCl37,
Helv. Phys. Acta, 1941, 14, 420. [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]
Krishnamurthy, 1958
Krishnamurthy, V.G.,
Ultra-violet bands of mercury chloride,
Z. Phys., 1958, 150, 287. [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]
Horne, Gosavi, et al., 1968
Horne, D.G.; Gosavi, R.; Strausz, O.P.,
Reactions of metal atoms. I. The combination of mercury and chlorine atoms and the dimerization of HgCl,
J. Chem. Phys., 1968, 48, 4758. [all data]
Maxwell and Mosley, 1940
Maxwell, L.R.; Mosley, V.M.,
Internuclear distances in Se2, Te2, and HgCl by electron diffraction,
Phys. Rev., 1940, 57, 21. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
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