bis(η5-Cyclopentadienyl) chromium
- Formula: C10H10Cr
- Molecular weight: 182.1825
- IUPAC Standard InChI: InChI=1S/2C5H5.Cr/c2*1-2-4-5-3-1;/h2*1-5H;
- IUPAC Standard InChIKey: OXPNGPODCRFNTM-UHFFFAOYSA-N
- CAS Registry Number: 1271-24-5
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Chromocene; bis(η5-cyclopenta-2,4-dien-1-yl)chromium
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Condensed 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 as indicated in comments:
MS - José A. Martinho Simões
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | 42.61 ± 0.62 | kcal/mol | Review | Martinho Simões | MS |
| ΔfH°solid | 44.5 ± 0.7 | kcal/mol | CC-SB | Chipperfield, Sneyd, et al., 1979 | Value corrected based on a set of ancillary data by J.A. Martinho Simões; The enthalpy of combustion is not reported in Chipperfield, Sneyd, et al., 1979; MS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -1461.0 ± 0.50 | kcal/mol | CC-SB | Tel'noi, Kirynov, et al., 1975 | Please also see Pedley and Rylance, 1977 and Tel'noi and Rabinovich, 1977.; MS |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid,1 bar | 56.41 | cal/mol*K | N/A | Rabinovich, Nistratov, et al., 1978 | DH |
| S°solid,1 bar | 56.41 | cal/mol*K | N/A | Rabinovich, Nistratov, et al., 1975 | DH |
Constant pressure heat capacity of solid
| Cp,solid (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 47.44 | 298. | Chhor, Pommier, et al., 1984 | T = 10 to 300 K. Unsmoothed experimental datum.; DH |
| 47.61 | 298.15 | Rabinovich, Nistratov, et al., 1978 | T = 5 to 300 K.; DH |
| 47.59 | 298.15 | Rabinovich, Nistratov, et al., 1975 | T = 5 to 298.15 K.; DH |
References
Go To: Top, Condensed phase thermochemistry 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]
Chipperfield, Sneyd, et al., 1979
Chipperfield, J.R.; Sneyd, J.C.R.; Webster, D.E.,
J. Organometal. Chem., 1979, 178, 177. [all data]
Tel'noi, Kirynov, et al., 1975
Tel'noi, V.I.; Kirynov, K.V.; Ermolaev, V.I.; Rabinovich, I.B.,
Dokl. Akad. Nauk SSSR, 1975, 220, 1088. [all data]
Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J.,
Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [all data]
Tel'noi and Rabinovich, 1977
Tel'noi, V.I.; Rabinovich, I.B.,
Russ. Chem. Rev., 1977, 46, 689. [all data]
Rabinovich, Nistratov, et al., 1978
Rabinovich, I.B.; Nistratov, V.P.; Sheiman, M.S.; Burchalova, G.V.,
Heat capacities of dicyclopentadienyl compounds of vanadium, chromium, manganese, cobalt, and nickel,
J. Chem. Thermodynam., 1978, 10, 523-536. [all data]
Rabinovich, Nistratov, et al., 1975
Rabinovich, I.B.; Nistratov, V.P.; Sheiman, M.S.; Burchalova, G.V.,
Heat capacity and transitions in solid state. Dicyclopentadienyl compounds of transition elements,Quatrieme Conference International de Thermodynamique Chimique II,
Thermophysiques (capacites thermiques) pp., 1975, 69-76, 136. [all data]
Chhor, Pommier, et al., 1984
Chhor, K.; Pommier, C.; Diot, M.,
Low-temperature thermodynamic study of the stable and metastable phases of (C4H4N)Fe(C5H5) (C4H4P)Fe(C5H5), and (C5H5)2 Cr crystals,
J. Chem. Thermodynam., 1984, 16, 503-517. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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