Bis(pentamethylcyclopentadienyl)iron
- Formula: C20H30Fe
- Molecular weight: 326.297
- IUPAC Standard InChIKey: OZHNSXNGSKKWMC-UHFFFAOYSA-N
- CAS Registry Number: 12126-50-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Ferrocene, decamethyl-; Ferrocene, 1,1',2,2',3,3',4,4',5,5'-decamethyl-
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Phase change data
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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: William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔsubH° | 23.7 ± 0.57 | kcal/mol | ME | Lousada, Pinto, et al., 2008 | |
ΔsubH° | 23.1 ± 0.1 | kcal/mol | C | Kiyobayashi and Minas da Piedade, 2001 |
Enthalpy of sublimation
ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
22.9 ± 0.57 | 365. | ME | Lousada, Pinto, et al., 2008 | Based on data from 355. to 376. K. |
Gas phase ion energetics data
Go To: Top, Phase change data, Mass spectrum (electron ionization), 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:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
5.8 ± 0.1 | PI | Barfuss, Emrich, et al., 1990 | LL |
6.2 ± 0.1 | EI | Barfuss, Emrich, et al., 1990 | LL |
5.88 | PE | Cauletti, Green, et al., 1980 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C19H26Fe+ | 15.8 ± 0.2 | ? | EI | Barfuss, Emrich, et al., 1990 | LL |
C19H26Fe+ | 14.8 ± 0.1 | ? | PI | Barfuss, Emrich, et al., 1990 | LL |
C19H27Fe+ | 9.1 ± 0.2 | CH3 | EI | Barfuss, Emrich, et al., 1990 | LL |
Mass spectrum (electron ionization)
Go To: Top, Phase change data, Gas phase ion energetics 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Chemical Concepts |
NIST MS number | 152924 |
References
Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Lousada, Pinto, et al., 2008
Lousada, Cláudio M.; Pinto, Susana S.; Canongia Lopes, José N.; Minas da Piedade, M. Fátima; Diogo, Hermínio P.; Minas da Piedade, Manuel E.,
Experimental and Molecular Dynamics Simulation Study of the Sublimation and Vaporization Energetics of Iron Metalocenes. Crystal Structures of Fe(η 5 -C 5 H 4 CH 3 ) 2 and Fe[(η 5 -(C 5 H 5 )(η 5 -C 5 H 4 CHO)],
J. Phys. Chem. A, 2008, 112, 13, 2977-2987, https://doi.org/10.1021/jp7107818
. [all data]
Kiyobayashi and Minas da Piedade, 2001
Kiyobayashi, Tetsu; Minas da Piedade, Manuel E.,
The standard molar enthalpy of sublimation ofη5-bis-pentamethylcyclopentadienyl iron measured with an electrically calibrated vacuum-drop sublimation microcalorimetric apparatus,
The Journal of Chemical Thermodynamics, 2001, 33, 1, 11-21, https://doi.org/10.1006/jcht.2000.0716
. [all data]
Barfuss, Emrich, et al., 1990
Barfuss, S.; Emrich, R.-H.; Hirschwald, W.; Dowben, P.A.; Boag, N.M.,
A mass spectrometric investigation of chloro-, bromo- and methyl-ferrocenes by electron and photon impact ionisation,
J. Org. Chem., 1990, 391, 209. [all data]
Cauletti, Green, et al., 1980
Cauletti, C.; Green, J.C.; Kelly, M.R.; Powell, P.; Van Tilborg, J.,
Photoelectron spectra of metallocenes,
J. Electron Spectrosc. Relat. Phenom., 1980, 19, 327. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy 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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