scandium

• Formula: Sc
• Molecular weight: 44.955912
• IUPAC Standard InChI: InChI=1S/Sc Copy

  
• IUPAC Standard InChIKey: SIXSYDAISGFNSX-UHFFFAOYSA-N Copy
• 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:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • References
  • Notes
• 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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Reaction thermochemistry 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 compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

(CAS Reg. No. 64924-57-8 • 4294967295) +  = CAS Reg. No. 64924-57-8

By formula: (CAS Reg. No. 64924-57-8 • 4294967295Sc) + Sc = CAS Reg. No. 64924-57-8

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)

Electron affinity determinations

Ionization energy determinations

References

Go To: Top, Reaction thermochemistry data, 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.

Wu and Wang, 1998
Wu, H.B.; Wang, L.S., Photoelectron spectroscopy and electronic structure of ScOn- (n = 1-4) and YOn- (n = 1-5): Strong electron correlation effects in ScO- and YO-, J. Phys. Chem. A, 1998, 102, 46, 9129-9135, https://doi.org/10.1021/jp982588q . [all data]

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

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• Symbols used in this document:
  

  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy
  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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