Nickelocene
- Formula: C10H10Ni
- Molecular weight: 188.8798
- IUPAC Standard InChI: InChI=1S/2C5H5.Ni/c2*1-2-4-5-3-1;/h2*1-5H;
- IUPAC Standard InChIKey: FOOKRXHSBKEWSE-UHFFFAOYSA-N
- CAS Registry Number: 1271-28-9
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Nickel, di-π-cyclopentadienyl-; Dicyclopentadienylnickel; Nickel, bis(η5-2,4-cyclopentadien-1-yl)-; Nickel, dicyclopentadienyl-; bis(η5-Cyclopentadienyl) nickel; Bis(cyclopentadienyl)nickel (II); Nickel, compd with π-cyclopentadienyl (1:2); π-Cyclopentadienyl compd. with nickel; Di-π-cyclopentadienylnickel; Nikelocen; Nickel, bis(η5-cyclopentadienyl)-; Bis(η5-2,4-cyclopentadien-1-yl)nickel
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Phase change data
Go To: Top, 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° | 71.5 ± 0.6 | kJ/mol | CC-SB | Torres-Gómez, Barreiro-Rodríguez, et al., 1988 | Other values for the enthalpy of sublimation have been reported: 72.4 ± 1.3 kJ/mol Turnbull, 1967 and 70.2 ± 1.5 kJ/mol Baev, Barkatin, et al., 1984.; MS |
| ΔsubH° | 70.2 ± 1.5 | kJ/mol | N/A | Baev, Barkatin, et al., 1984, 2 | AC |
| ΔsubH° | 72.4 ± 1.3 | kJ/mol | MM | Pilcher and Skinner, 1983 | Based on data from 353. - 419. K. See also Tel'noi, Kirynov, et al., 1975 and Turnbull, 1967, 2.; AC |
Temperature of phase transition
| Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|
| 170. - 240. | crystaline, II | crystaline, I | Pommier and Azokpota, 1976 | S = 5.2 J/mol*K; DH |
| 170. - 240. | crystaline, II | crystaline, I | Azokpota, Calvarin, et al., 1976 | S = 5.3 J/mol*K No peak is observed on heat capacity curve, but a deviation from normal variation occurs between 170 to 240 K.; DH |
Enthalpy of phase transition
| ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.182 | 100. - 190. | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1978 | Lambda transition over the temperature range 100 to 190 K.; DH |
| 0.182 | 100. - 190. | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1975 | Lambda transition.; DH |
Entropy of phase transition
| ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 1.34 | 100. - 190. | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1978 | Lambda; DH |
| 1.32 | 100. - 190. | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1975 | Lambda; DH |
References
Go To: Top, Phase change data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Torres-Gómez, Barreiro-Rodríguez, et al., 1988
Torres-Gómez, L.A.; Barreiro-Rodríguez, G.; Méndez- Ruíz, F.,
Thermochim. Acta, 1988, 124, 179. [all data]
Turnbull, 1967
Turnbull, A.G.,
Austral. J. Chem., 1967, 20, 2757. [all data]
Baev, Barkatin, et al., 1984
Baev, A.K.; Barkatin, A.A.; Dargileva, L.M.,
Vesti Akad. Navuk BSSR, Ser. Khim. Navuk, 1984, 60.. [all data]
Baev, Barkatin, et al., 1984, 2
Baev, A.K.; Barkatin, A.A.; Dyagileva, L.M.,
Vestsi Akad. Navuk BSSR Ser. Khim. Navuk, 1984, 60. [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]
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]
Turnbull, 1967, 2
Turnbull, AG,
Thermochemistry of biscyclopentsdienyl metal compounds,
Aust. J. Chem., 1967, 20, 12, 2757-621, https://doi.org/10.1071/CH9672757
. [all data]
Pommier and Azokpota, 1976
Pommier, C.; Azokpota, C.,
Study of phase transitions in metallocenes by determining specific heat curves,
J. Calorim. Anal. Therm. [C.R.], 1976, 3-6, 1-8. [all data]
Azokpota, Calvarin, et al., 1976
Azokpota, C.; Calvarin, G.; Pommier, C.,
Heat capacity of molecular compounds with order-disorder transition: nickelocene, Ni(C5H5)2, and ferrocene, Fe(C5H5)2,
J. Chem. Thermodynam., 1976, 8, 283-287. [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, Phase change data, References
- Symbols used in this document:
Ttrs Temperature of phase transition ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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