rubidium iodide
- Formula: IRb
- Molecular weight: 212.3723
- IUPAC Standard InChI: InChI=1S/HI.Rb/h1H;/q;+1/p-1
- IUPAC Standard InChIKey: WFUBYPSJBBQSOU-UHFFFAOYSA-M
- CAS Registry Number: 7790-29-6
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Gas phase ion energetics data
Go To: Top, Constants of diatomic molecules, NIST Free Links, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
Electron affinity determinations
| EA (eV) | Reference | Comment |
|---|---|---|
| 0.710 ± 0.040 | Miller, Leopold, et al., 1986 | Extrapolated by polarizability and radius from experimental data.; B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 7.2 ± 0.4 | EI | Emons, Horlbeck, et al., 1982 | LBLHLM |
| 6.6 ± 0.4 | EI | Biefeld, 1978 | LLK |
| 7.1 ± 0.1 | PE | Potts and Price, 1977 | LLK |
| 7.1 ± 0.1 | PE | Potts, Williams, et al., 1974 | LLK |
| 7.31 ± 0.03 | PI | Berkowitz, 1971 | LLK |
| 8.0 ± 0.3 | EI | Platel, 1965 | RDSH |
| 7.3 | PE | Goodman, Allen, et al., 1974 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| I+ | 14.4 ± 0.3 | Rb | EI | Platel, 1965 | RDSH |
| Rb+ | 9.4 ± 0.4 | I | EI | Biefeld, 1978 | LLK |
| Rb+ | 7.53 ± 0.03 | I | PI | Berkowitz, 1971 | LLK |
| Rb+ | 8.1 ± 0.3 | I | EI | Platel, 1965 | RDSH |
| Rb+ | 21.33 ± 0.04 | I(-) | PE | Potts and Price, 1977 | Vertical value; LLK |
| Rb+ | 22.21 ± 0.04 | I(-) | PE | Potts and Price, 1977 | Vertical value; LLK |
Constants of diatomic molecules
Go To: Top, Gas phase ion energetics data, NIST Free Links, 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 July, 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Continuous absorption with maxima at 30700, 38100, 41800 cm-1. 1 | ||||||||||||
| ↳Schmidt-Ott, 1931; Barrow and Caunt, 1953; Davidovits and Brodhead, 1967 | ||||||||||||
| A 3 | A ↔ X 2 | |||||||||||
| ↳Barrow and Caunt, 1953; Oldenborg, Gole, et al., 1974 | ||||||||||||
| X 1Σ+ | 0 | 138.51 4 | 0.335 4 | 0.03283293 | 0.00010946 | 0.000000118 | 7.380E-9 5 | 5.3E-12 | 3.176879 6 | |||
| ↳Honig, Mandel, et al., 1954; Rusk and Gordy, 1962 | ||||||||||||
Notes
| 1 | Additional peaks in the electron energy loss spectrum at 6.4, 15.6, 19.2 eV Geiger and Pfeiffer, 1968. Davidovits and Brodhead, 1967 give absorption cross sections from 26000 to 50000 cm-1. |
| 2 | There is no conclusive evidence yet for the identity of the upper states observed in the absorption and emission spectra. |
| 3 | Diffuse absorption (fluctuation) bands 23150 - 27550 cm-1; long lower-state progression in chemiluminescence 17500 - 22500 cm-1. |
| 4 | Calculated from the rotational constants Rusk and Gordy, 1962. |
| 5 | missing note |
| 6 | Rotation sp. 9 |
| 7 | Thermochemical value Brewer and Brackett, 1961, 3.52 eV by flame photometry Bulewicz, Phillips, et al., 1961. |
| 8 | Onset of the first photoelectron peak with maximum at 7.51 eV Potts, Williams, et al., 1974. |
| 9 | eqQ(85Rb) = -40.40 MHz, v=0 Tiemann and Hoeft, 1976, eqQ(127I) = -59.89 MHz, v=0 Tiemann and Hoeft, 1976. μel = 11.48 D [electric deflection method Story and Hebert, 1976]. |
| 10 | D00(RbI) + I.P.(Rb) - I.P.(RbI). |
| 11 | From maxima of the photoelectron peaks Goodman, Allen, et al., 1974, Potts, Williams, et al., 1974, missing citation. The complexity of the metal 4p photoelectron spectrum is tentatively attributed to configuration interaction missing citation. |
References
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Miller, Leopold, et al., 1986
Miller, T.M.; Leopold, D.G.; Murray, K.K.; Lineberger, W.C.,
Electron Affinities of the Alkali Halides and the Structure of their Negative Ions,
J. Chem. Phys., 1986, 85, 5, 2368, https://doi.org/10.1063/1.451091
. [all data]
Emons, Horlbeck, et al., 1982
Emons, H.-H.; Horlbeck, W.; Kiessling, D.,
Massenspektrometrische untersuchung der gasphase uber alkalimetalliodiden,
Z. Anorg. Allg. Chem., 1982, 488, 212. [all data]
Biefeld, 1978
Biefeld, R.M.,
The vaporization thermodynamics of rubidium iodide as determined by mass-loss Knudsen effusion and mass spectrometry,
J. Chem. Thermodyn., 1978, 10, 907. [all data]
Potts and Price, 1977
Potts, A.W.; Price, W.C.,
Photoelectron studies of ionic materials using molecular beam techniques,
Phys. Scr., 1977, 16, 191. [all data]
Potts, Williams, et al., 1974
Potts, A.W.; Williams, T.A.; Price, W.C.,
Photoelectron spectra and electronic structure of diatomic alkali halides,
Proc. Roy. Soc. London A, 1974, 341, 147. [all data]
Berkowitz, 1971
Berkowitz, J.,
Photoionization mass spectrometry photoelectron spectroscopy of high temperature vapor,
Adv. High Temp. Chem., 1971, 3, 123. [all data]
Platel, 1965
Platel, G.,
Mesures des potentials d'apparition des ions obtenus par impact electronique dans la phase vapeur des iodures alcalins et des melanges LiI-MI,
J. Chim. Phys., 1965, 62, 1176. [all data]
Goodman, Allen, et al., 1974
Goodman, T.D.; Allen, J.D., Jr.; Cusachs, L.C.; Schweitzer, G.K.,
The photoelectron spectra of gaseous alkali halides,
J. Electron Spectrosc. Relat. Phenom., 1974, 3, 289. [all data]
Schmidt-Ott, 1931
Schmidt-Ott, H.D.,
Uber kontinuierliche absorptionsspektra der gasformigen alkalihalogenide im ultraviolett,
Z. Phys., 1931, 69, 724. [all data]
Barrow and Caunt, 1953
Barrow, R.F.; Caunt, A.D.,
The ultra-violet absorption spectra of some gaseous alkali-metal halides and the dissociation energy of fluorine,
Proc. R. Soc. London A, 1953, 219, 120. [all data]
Davidovits and Brodhead, 1967
Davidovits, P.; Brodhead, D.C.,
Ultraviolet absorption cross sections for the alkali halide vapors,
J. Chem. Phys., 1967, 46, 2968. [all data]
Oldenborg, Gole, et al., 1974
Oldenborg, R.C.; Gole, J.L.; Zare, R.N.,
Chemiluminescent spectra of alkali-halogen reactions,
J. Chem. Phys., 1974, 60, 4032. [all data]
Honig, Mandel, et al., 1954
Honig, A.; Mandel, M.; Stitch, M.L.; Townes, C.H.,
Microwave spectra of the alkali halides,
Phys. Rev., 1954, 96, 629. [all data]
Rusk and Gordy, 1962
Rusk, J.R.; Gordy, W.,
Millimeter wave molecular beam spectroscopy: alkali bromides and iodides,
Phys. Rev., 1962, 127, 817. [all data]
Geiger and Pfeiffer, 1968
Geiger, J.; Pfeiffer, H.-C.,
Untersuchung der Anregung innerer Elektronen von Alkalihalogenidmolekulen im Energieverlustspektrum von 25 keV-Elektronen,
Z. Phys., 1968, 208, 105. [all data]
Brewer and Brackett, 1961
Brewer, L.; Brackett, E.,
The dissociation energies of gaseous alkali halides,
Chem. Rev., 1961, 61, 425. [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]
Tiemann and Hoeft, 1976
Tiemann, E.; Hoeft, J.,
Hyperfeinstruktur des RbJ,
Z. Naturforsch. A, 1976, 31, 236. [all data]
Story and Hebert, 1976
Story, T.L., Jr.; Hebert, A.J.,
Dipole moments of KI, RbBr, RbI, CsBr, and CsI by the electric deflection method,
J. Chem. Phys., 1976, 64, 855. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Constants of diatomic molecules, NIST Free Links, References
- Symbols used in this document:
AE Appearance energy EA Electron affinity - 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.