Cesium iodide
- Formula: CsI
- Molecular weight: 259.80992
- IUPAC Standard InChI: InChI=1S/Cs.HI/h;1H/q+1;/p-1
- IUPAC Standard InChIKey: XQPRBTXUXXVTKB-UHFFFAOYSA-M
- CAS Registry Number: 7789-17-5
- 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. - Other names: caesium iodide
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Phase change data
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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: William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 45.67 | kcal/mol | MS | Viswanathan and Hilpert, 2010 | See also Pankajavalli, Mallika, et al., 1998. |
| ΔsubH° | 46.75 | kcal/mol | GS | Pankajavalli, Mallika, et al., 1998 | |
| ΔsubH° | 46.15 | kcal/mol | T | Cordfunke, 1986 | See also Pankajavalli, Mallika, et al., 1998. |
| ΔsubH° | 46.15 | kcal/mol | T | Venugopal, Prasad, et al., 1985 | See also Pankajavalli, Mallika, et al., 1998. |
Reaction thermochemistry data
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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: John E. Bartmess
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
+
= (
•
)
By formula: I- + CsI = (I- • CsI)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 33.700 ± 0.050 | kcal/mol | N/A | Wang, Wang, et al., 2010 | gas phase |
| ΔrH° | 36.1 ± 1.3 | kcal/mol | N/A | Gusarov, Gorokhov, et al., 1979 | gas phase; value altered from reference due to conversion from electron convention to ion convention |
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.
Viswanathan and Hilpert, 2010
Viswanathan, R.; Hilpert, K.,
Mass Spectrometric Study of the Vaporization of Cesium Iodide and Thermochemistry of (CsI)2(g) and (CsI)3(g),
Berichte der Bunsengesellschaft für physikalische Chemie, 2010, 88, 2, 125-131, https://doi.org/10.1002/bbpc.19840880210
. [all data]
Pankajavalli, Mallika, et al., 1998
Pankajavalli, R.; Mallika, C.; Sreedharan, O.M.; Premila, M.; Gopalan, Padma,
Vapour pressure of C60 by a transpiration method using a horizontal thermobalance,
Thermochimica Acta, 1998, 316, 1, 101-108, https://doi.org/10.1016/S0040-6031(98)00304-9
. [all data]
Cordfunke, 1986
Cordfunke, E.H.P.,
Thermodynamic properties of CSI. II. vapour pressures and thermochemical properties of CsI(g) and Cs2I2(g),
Thermochimica Acta, 1986, 108, 45-55, https://doi.org/10.1016/0040-6031(86)85076-6
. [all data]
Venugopal, Prasad, et al., 1985
Venugopal, V.; Prasad, R.; Sood, D.D.,
Vaporisation thermodynamics of caesium iodide and caesium chromate,
Journal of Nuclear Materials, 1985, 130, 115-121, https://doi.org/10.1016/0022-3115(85)90300-9
. [all data]
Wang, Wang, et al., 2010
Wang, Y.L.; Wang, X.B.; Xing, X.P.; Wei, F.; Li, J.; Wang, L.S.,
Photoelectron Imaging and Spectroscopy of MI2- (M = Cs, Cu, Au): Evolution from Ionic to Covalent Bonding,
J. Phys. Chem. A, 2010, 114, 42, 11244-11251, https://doi.org/10.1021/jp103173d
. [all data]
Gusarov, Gorokhov, et al., 1979
Gusarov, A.V.; Gorokhov, L.N.; Pyatenko, A.T.; Sidorova, I.V.,
Negative ions in the vapors of inorganic compounds,
Adv. Mass Spectrom., 1979, 8, 262. [all data]
Notes
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- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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