Cobaltocene
- Formula: C10H10Co
- Molecular weight: 189.1196
- IUPAC Standard InChI: InChI=1S/2C5H5.Co/c2*1-2-4-5-3-1;/h2*1-5H;
- IUPAC Standard InChIKey: PXFGMRZPRDJDEK-UHFFFAOYSA-N
- CAS Registry Number: 1277-43-6
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: bis-(η5-Cyclopentadienyl) cobalt; Bis(cyclopentadienyl)cobalt; Cobalt, bis(η5-2,4-cyclopentadien-1-yl)-; Cobalt, di-π-cyclopentadienyl-; Dicyclopentadienylcobalt; Kobaltocen; Cobalt, bis(η5-cyclopentadienyl)-
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Gas phase thermochemistry data
Go To: Top, Phase change data, 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: José A. Martinho Simões
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 309.0 ± 2.5 | kJ/mol | Review | Martinho Simões | |
| ΔfH°gas | 277. ± 4. | kJ/mol | Review | Martinho Simões |
Phase change data
Go To: Top, Gas phase thermochemistry data, 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:
MS - José A. Martinho Simões
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔsubH° | 72.1 ± 0.1 | kJ/mol | CC-SB | Torres-Gómez, Barreiro-Rodríguez, et al., 1988 | Another value for the enthalpy of sublimation has been reported: 70.3 ± 4.2 kJ/mol Tel'noi, Kirynov, et al., 1975; MS |
| ΔsubH° | 70.3 ± 4.2 | kJ/mol | N/A | Pilcher and Skinner, 1983 | See also Tel'noi, Kirynov, et al., 1975.; AC |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.238 | 93.5 | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1978 | Lambda transition between 70 to 120 K with a maximum at 93.5 K.; DH |
| 0.238 | 92. | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1975 | Lambda transition between 70 to 140 K with a maximum at 92 K.; DH |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 2.72 | 93.5 | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1978 | Lambda; DH |
| 2.73 | 92. | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1975 | Lambda; DH |
References
Go To: Top, Gas phase thermochemistry data, Phase change 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]
Torres-Gómez, Barreiro-Rodríguez, et al., 1988
Torres-Gómez, L.A.; Barreiro-Rodríguez, G.; Méndez- Ruíz, F.,
Thermochim. Acta, 1988, 124, 179. [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]
Pilcher and Skinner, 1983
Pilcher, G.; Skinner, H.A.,
Thermochemistry of organometallic compounds, 1983, 43-90, https://doi.org/10.1002/9780470771686.ch2
. [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]
Notes
Go To: Top, Gas phase thermochemistry data, Phase change data, References
- Symbols used in this document:
ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔfH°gas Enthalpy of formation of gas at standard conditions ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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