potassium hydride
- Formula: HK
- Molecular weight: 40.1062
- IUPAC Standard InChI: InChI=1S/K.H
- IUPAC Standard InChIKey: NTTOTNSKUYCDAV-UHFFFAOYSA-N
- CAS Registry Number: 7693-26-7
- Chemical structure:
This structure is also available as a 2d Mol file - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Options:
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 January, 1977
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Theoretical potential energy curves, coupling between molecular states Numrich and Truhlar, 1975. | ||||||||||||
| Fluctuating continuum in emission, 25000 - 33000 cm-1. | ||||||||||||
| ↳Hori, 1933 | ||||||||||||
| A 1Σ+ | 19052.8 | 228.2 Z | -5.75 1 | 1.269 | -0.0375 2 | 9.5E-5 | 3.68 | A 3 ↔ X R | 188680.1 Z | |||
| ↳Almy and Hause, 1932; Hori, 1933, 2; Almy and Beiler, 1942; Bartky, 1966 | ||||||||||||
| X 2Σ+ | 0 | 983.6 Z | 14.32 | 3.4123 | 0.0817 | 15.3E-5 | 2.2425 | |||||
Notes
| 1 | The ΔG(v+1/2) curve has a maximum at v ~11. |
| 2 | The Bv curve has a maximum at v ~7. |
| 3 | Radiative lifetime τ < 10 ns Cruse and Zare, 1974. |
| 4 | The ΔG(v+1/2) curve has a maximum at v ~16. |
| 5 | The Bv curve has a maximum at v ~11. |
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.
Numrich and Truhlar, 1975
Numrich, R.W.; Truhlar, D.G.,
Mixing of ionic and covalent configurations for NaH, KH, and MgH+. Potential energy curves and couplings between molecular states,
J. Phys. Chem., 1975, 79, 2745. [all data]
Hori, 1933
Hori,
(Reference not verified),
Mem. Ryojun Coll. Eng., 1933, 6, 115. [all data]
Almy and Hause, 1932
Almy, G.M.; Hause, C.D.,
The spectrum of potassium hydride,
Phys. Rev., 1932, 42, 242. [all data]
Hori, 1933, 2
Hori,
(Reference not verified),
Mem. Ryojun Coll. Eng., 1933, 6, 1. [all data]
Almy and Beiler, 1942
Almy, G.M.; Beiler, A.C.,
Potential energy curve of the excited state of KH,
Phys. Rev., 1942, 61, 476. [all data]
Bartky, 1966
Bartky, I.R.,
The A1Σ-X1Σ transition of 39KH and 39KD. Vibrational numbering and molecular constants,
J. Mol. Spectrosc., 1966, 20, 299. [all data]
Cruse and Zare, 1974
Cruse, J.A.; Zare, R.N.,
Fluorescence of the KH molecule,
J. Chem. Phys., 1974, 60, 1182. [all data]
Notes
Go To: Top, Constants of diatomic molecules, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.