Chromium,pentacarbonyl(pyridine)-
- Formula: C10H5CrNO5
- Molecular weight: 271.1465
- CAS Registry Number: 14740-77-3
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Gas phase 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: José A. Martinho Simões
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -150.4 ± 1.6 | kcal/mol | Review | Martinho Simões | The enthalpy of formation relies on -217.1 ± 0.62 kcal/mol for the enthalpy of formation of Cr(CO)6(g) |
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 as indicated in comments:
MS - José A. Martinho Simões
AC - William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 24.67 ± 0.43 | kcal/mol | DSC | Daamen, Ernsting, et al., 1979 | MS |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 24.67 ± 0.43 | 306. | ME | Daamen, Ernsting, et al., 1979, 2 | Based on data from 294. to 317. K.; AC |
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: José A. Martinho Simões
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
C10H5CrNO5 (solution) + (solution) =
(solution) +
(solution)
By formula: C10H5CrNO5 (solution) + CO (solution) = C6CrO6 (solution) + C4H4N2 (solution)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -14.8 | kcal/mol | KinS | Wovkulich and Atwood, 1980 | solvent: Hexane; The data rely on the enthalpy and entropy of activation for the forward reaction, 25.4 ± 1.1 kcal/mol and 13.0±14.6 J/(mol K) Dennenberg and Darensbourg, 1972, and also on the enthalpy and entropy of activation for the Cr-CO dissociation in Cr(CO)6, 40.20 ± 0.60 kcal/mol and 94.6±6.3 J/(mol K) Graham and Angelici, 1967. The latter data were obtained in decalin |
C12H16CrO5 (solution) + (solution) =
(solution) + C10H5CrNO5 (solution)
By formula: C12H16CrO5 (solution) + C4H4N2 (solution) = C7H16 (solution) + C10H5CrNO5 (solution)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -20.1 ± 0.41 | kcal/mol | PAC | Yang, Vaida, et al., 1988 | solvent: Heptane |
C10H5CrNO5 (cr) + (g) =
(g) +
(g)
By formula: C10H5CrNO5 (cr) + CO (g) = C6CrO6 (g) + C4H4N2 (g)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 18. ± 1. | kcal/mol | DSC | Daamen, van der Poel, et al., 1979 |
Gas phase ion energetics 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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 7.30 | PE | Weiner, Gin, et al., 1977 | Vertical value |
References
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Martinho Simões
Martinho Simões, J.A.,
Private communication (see http://webbook.nist.gov/chemistry/om/). [all data]
Daamen, Ernsting, et al., 1979
Daamen, H.; Ernsting, J.M.; Oskam, A.,
Thermochim. Acta, 1979, 33, 217. [all data]
Daamen, Ernsting, et al., 1979, 2
Daamen, H.; Ernsting, J.M.; Oskam, A.,
Vapour pressure measurements on M(CO)5L (M = Cr, Mo, W; L = piperidine, pyridine, pyrazine, pyrazole, thiazole),
Thermochimica Acta, 1979, 33, 217-223, https://doi.org/10.1016/0040-6031(79)87044-6
. [all data]
Wovkulich and Atwood, 1980
Wovkulich, M.J.; Atwood, J.D.,
J. Organometal. Chem., 1980, 184, 77. [all data]
Dennenberg and Darensbourg, 1972
Dennenberg, R.J.; Darensbourg, D.J.,
Inorg. Chem., 1972, 11, 72. [all data]
Graham and Angelici, 1967
Graham, J.R.; Angelici, R.J.,
Inorg. Chem., 1967, 6, 2082. [all data]
Yang, Vaida, et al., 1988
Yang, G.K.; Vaida, V.; Peters, K.S.,
Polyhedron, 1988, 7, 1619. [all data]
Daamen, van der Poel, et al., 1979
Daamen, H.; van der Poel, H.; Stufkens, D.J.; Oskam, A.,
Thermochim. Acta, 1979, 34, 69. [all data]
Weiner, Gin, et al., 1977
Weiner, M.A.; Gin, A.; Lattman, M.,
Ultraviolet photoelectron spectra of 4-substituted pyridine- pentacarbonylchromium complexes,
Inorg. Chim. Acta, 1977, 24, 235. [all data]
Notes
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- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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