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
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
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. to 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. to 240. | crystaline, II | crystaline, I | Pommier and Azokpota, 1976 | S = 5.2 J/mol*K; DH |
| 170. to 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. to 190. | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1978 | Lambda transition over the temperature range 100 to 190 K.; DH |
| 0.182 | 100. to 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. to 190. | crystaline, II | crystaline, I | Rabinovich, Nistratov, et al., 1978 | Lambda; DH |
| 1.32 | 100. to 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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.