Aluminum monochloride
- Formula: AlCl
- Molecular weight: 62.435
- IUPAC Standard InChI: InChI=1S/Al.ClH/h;1H/q+1;/p-1
- IUPAC Standard InChIKey: IZMHKHHRLNWLMK-UHFFFAOYSA-M
- CAS Registry Number: 13595-81-8
- Chemical structure:
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Constants of diatomic molecules
Go To: Top, References, Notes
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 November, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fragments of additional systems in the region 48200 - 54900 cm-1. | ||||||||||||
| ↳Reddy and Rao, 1957 | ||||||||||||
| b (3Σ) | (43591) | (350) 1 | [0.226] 2 | [2.21] | b → a R | 18847.40 HQ | ||||||
| ↳missing citation | ||||||||||||
| R | 18911 (Z) | |||||||||||
| ↳missing citation | ||||||||||||
| R | 19895.00 HQ | |||||||||||
| ↳missing citation | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| A 1Π | 38254.0 | 449.96 HQ | 4.37 3 | -0.216 | 0.259 4 | 0.006 | 2.067 | A ↔ X RV | 38237.7 HQ | |||
| ↳missing citation; Mahanti, 1934; missing citation; Miescher, 1935 | ||||||||||||
| a 3Πr | 24658 | 524.35 HQ | 2.175 | 0.250 5 | 0.002 | 2.10 | a → X V | 24680 (Z) | ||||
| ↳missing citation | ||||||||||||
| 24593.84 | 524.35 HQ | 2.175 | 0.250 5 | 0.002 | 2.10 | a → X V | 24615.31 HQ | |||||
| ↳missing citation | ||||||||||||
| 24528 | 524.35 HQ | 2.175 | 0.250 5 | 0.002 | 2.10 | a → X V | 24541.65 HP | |||||
| ↳missing citation | ||||||||||||
| State | Te | ωe | ωexe | ωeye | Be | αe | γe | De | βe | re | Trans. | ν00 |
| X 1Σ+ | 0 | 481.3 HQ | 1.95 | 0.24393012 | 0.00161113 6 | 2.5027E-07 7 | -0.0053E-7 | 2.130113 8 9 | ||||
| ↳Lide, 1965; Wyse and Gordy, 1972 | ||||||||||||
Notes
| 1 | Estimated from observed isotope shifts. |
| 2 | v > 0 probably predissociated. |
| 3 | This state may have a potential hump of ~ 0.26 eV. Barrow, 1954, Barrow, 1960 |
| 4 | Predissociation in v=10 missing citation. |
| 5 | Estimated from P and Q head separations. |
| 6 | αv= +4.697E-6(v+1/2)2 - 5.7E-9(v+1/2)3. |
| 7 | He= -4.456E-14. |
| 8 | From the corrected Be = 0.24394229. |
| 9 | Microwave sp. 11 |
| 10 | Thermochemical value [see Appendix of Hildenbrand and Theard, 1969] See also Barrow, 1960. |
| 11 | μel = 1 to 2 D Lide, 1965. Values of eqQ in Lide, 1965, Hoeft, Torring, et al., 1973. |
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.
Reddy and Rao, 1957
Reddy, S.P.; Rao, P.T.,
The emission spectrum of aluminum monochloride in the vacuum ultraviolet,
Can. J. Phys., 1957, 35, 912. [all data]
Mahanti, 1934
Mahanti, P.C.,
Das bandenspektrum des aluminiumchlorids,
Z. Phys., 1934, 88, 550. [all data]
Miescher, 1935
Miescher, E.,
Bandenspektren von bor- und aluminium-halogeniden,
Helv. Phys. Acta, 1935, 8, 279. [all data]
Lide, 1965
Lide, D.R., Jr.,
High-temperature microwave spectroscopy: AlF and AlCl,
J. Chem. Phys., 1965, 42, 1013. [all data]
Wyse and Gordy, 1972
Wyse, F.C.; Gordy, W.,
Millimeter wave rotational spectra of AlCl, AlBr, and AlI,
J. Chem. Phys., 1972, 56, 2130. [all data]
Barrow, 1954
Barrow, R.F.,
Maxima in the potential energy-distance functions of diatomic molecules,
J. Chem. Phys., 1954, 22, 573. [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]
Hildenbrand and Theard, 1969
Hildenbrand, D.L.; Theard, L.P.,
Mass spectrometric measurement of the dissociation energies of BeCi and BeCl2,
J. Chem. Phys., 1969, 50, 5350. [all data]
Hoeft, Torring, et al., 1973
Hoeft, J.; Torring, T.; Tiemann, E.,
Hyperfeinstruktur von AlCl und AlBr,
Z. Naturforsch. A, 1973, 28, 1066. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
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