scandium
- Formula: Sc
- Molecular weight: 44.955912
- IUPAC Standard InChIKey: SIXSYDAISGFNSX-UHFFFAOYSA-N
- CAS Registry Number: 7440-20-2
- Chemical structure:
This structure is also available as a 2d Mol file - 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:
- NIST Atomic Spectra Database - Lines Holdings (on physics web site)
- NIST Atomic Spectra Database - Levels Holdings (on physics web site)
- NIST Atomic Spectra Database - Ground states and ionization energies (on physics web site)
- Gas Phase Kinetics Database
- X-ray Photoelectron Spectroscopy Database, version 5.0
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Gas phase ion energetics 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess
View reactions leading to Sc+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 6.56144 ± 0.00006 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 218. | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 213.2 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.189 ± 0.020 | LPES | Feigerle, Herman, et al., 1981 | B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
6.56144 | EVAL | Lide, 1992 | LL |
6.56144 ± 0.00006 | S | Kaufman and Sugar, 1988 | LL |
6.56149 | S | Kelly, 1987 | LBLHLM |
6.56 | PE | Dyke, Gravenor, et al., 1985 | LBLHLM |
6.7 ± 0.5 | EI | Haque and Gingerich, 1981 | LLK |
6.7 ± 0.5 | EI | Haque and Gingerich, 1979 | LLK |
6.54 | S | Moore, 1970 | RDSH |
References
Go To: Top, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Feigerle, Herman, et al., 1981
Feigerle, C.S.; Herman, Z.; Lineberger, W.C.,
Laser Photoelectron Spectroscopy of Sc- and Y-: A Determination of the Order of Electron Filling in Transition Metal Anions,
J. Electron Spectros. Rel. Phenom., 1981, 23, 3, 441, https://doi.org/10.1016/0368-2048(81)85050-5
. [all data]
Lide, 1992
Lide, D.R. (Editor),
Ionization potentials of atoms and atomic ions
in Handbook of Chem. and Phys., 1992, 10-211. [all data]
Kaufman and Sugar, 1988
Kaufman, V.; Sugar, J.,
Wavelengths and energy level classifications of scandium spectra for all stages of ionization,
J. Phys. Chem. Ref. Data, 1988, 17, 1679. [all data]
Kelly, 1987
Kelly, R.L.,
Atomic and ionic spectrum lines of hydrogen through kryton,
J. Phys. Chem. Ref. Data, 1987, 16. [all data]
Dyke, Gravenor, et al., 1985
Dyke, J.M.; Gravenor, B.W.J.; Hastings, M.P.; Josland, G.D.; Morris, A.,
Gas phase high temperature photoelectron spectroscopy: An investigation of the transition metals scandium and vanadium,
J. Electron Spectrosc. Relat. Phenom., 1985, 35, 65. [all data]
Haque and Gingerich, 1981
Haque, R.; Gingerich, K.A.,
Identification and atomization energies of gaseous molecules ScC2, ScC3, ScC4, ScC5, and ScC6 by high temperature mass spectrometry,
J. Chem. Phys., 1981, 74, 6407. [all data]
Haque and Gingerich, 1979
Haque, R.; Gingerich, K.A.,
Investigation of the thermodynamic stabilities of the gaseous molecules RhScC, RhScC2 RhYC2 by Knudsen effusion mass spectrometry,
J. Chem. Soc. Faraday Trans. 2, 1979, 985. [all data]
Moore, 1970
Moore, C.E.,
Ionization potentials and ionization limits derived from the analyses of optical spectra,
Natl. Stand. Ref. Data Ser., (U.S. Natl. Bur. Stand.), 1970, 34, 1. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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