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selenium

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Phase change 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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director

Quantity Value Units Method Reference Comment
Tc1766.KN/ARau, 1974Uncertainty assigned by TRC = 1.76 K; TRC
Quantity Value Units Method Reference Comment
Pc271.551barN/ARau, 1974Uncertainty assigned by TRC = 2.7133 bar; TRC
Quantity Value Units Method Reference Comment
rhoc15.64mol/lN/ARau, 1974Uncertainty assigned by TRC = 0.0156 mol/l; TRC

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Temperature (K) A B C Reference Comment
629. - 953.6.337146588.12586.633Stull, 1947Coefficents calculated by NIST from author's data.

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


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. 16661-43-1 bullet 4294967295selenium) + selenium = CAS Reg. No. 16661-43-1

By formula: (CAS Reg. No. 16661-43-1 bullet 4294967295Se) + Se = CAS Reg. No. 16661-43-1

Quantity Value Units Method Reference Comment
Deltar445.7 ± 3.6kJ/molN/AStoneman and Larson, 1986gas phase; Wagman, Evans, et al., 1982 «DELTA»Hf(AH) = 7.1 kcal/mol

(CAS Reg. No. 101021-48-1 bullet 4294967295selenium) + selenium = CAS Reg. No. 101021-48-1

By formula: (CAS Reg. No. 101021-48-1 bullet 4294967295Se) + Se = CAS Reg. No. 101021-48-1

Quantity Value Units Method Reference Comment
Deltar468. ± 21.kJ/molN/ACoe, Snodgrass, et al., 1986gas phase

(CAS Reg. No. 12597-21-6 bullet 4294967295selenium) + selenium = CAS Reg. No. 12597-21-6

By formula: (CAS Reg. No. 12597-21-6 bullet 4294967295Se) + Se = CAS Reg. No. 12597-21-6

Quantity Value Units Method Reference Comment
Deltar300. ± 13.kJ/molN/ASnodgrass, Coe, et al., 1989gas phase

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:
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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
B - John E. Bartmess

View reactions leading to Se+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)9.75238eVN/AN/AL

Electron affinity determinations

EA (eV) Method Reference Comment
2.0206N/AVandevraye, Drag, et al., 2012Given: 2.0206046(11) eV; B
2.020682 ± 0.000044LPDMansour, Edge, et al., 1988B

Ionization energy determinations

IE (eV) Method Reference Comment
9.75238EVALLide, 1992LL
9.752SKelly, 1987LBLHLM
9.75238SMoore, 1970RDSH

References

Go To: Top, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, NIST Free Links, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Rau, 1974
Rau, H., Vapour composition and critical constants of selenium, J. Chem. Thermodyn., 1974, 6, 525. [all data]

Stull, 1947
Stull, Daniel R., Vapor Pressure of Pure Substances. Organic and Inorganic Compounds, Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 . [all data]

Stoneman and Larson, 1986
Stoneman, R.C.; Larson, D.J., Photodetachment spectroscopy of SeH- in a magnetic field, J. Phys. B:, 1986, 19, 405. [all data]

Wagman, Evans, et al., 1982
Wagman, D.D.; Evans, W.H.; Parker, V.B.; Schumm, R.H.; Halow, I.; Bailey, S.M.; Churney, K.L.; Nuttall, R.L., The NBS Tables of Chemical Thermodynamic Properties (NBS Tech Note 270), J. Phys. Chem. Ref. Data, Supl. 1, 1982, 11. [all data]

Coe, Snodgrass, et al., 1986
Coe, J.V.; Snodgrass, J.T.; Freidhoff, C.B.; McHugh, K.M.; Bowen, K.H., Photoelectron spectroscopy of the negative ion SeO-, J. Chem. Phys., 1986, 84, 618. [all data]

Snodgrass, Coe, et al., 1989
Snodgrass, J.T.; Coe, J.V.; McHugh, K.M.; Freidhoff, C.B.; Bowen, K.H., Photoelectron Spectroscopy of the Selenium and Tellurium Containing Negative Ions: SeO2-, Se2- and Te2-, J. Phys. Chem., 1989, 93, 4, 1249, https://doi.org/10.1021/j100341a016 . [all data]

Vandevraye, Drag, et al., 2012
Vandevraye, M.; Drag, C.; Blondel, C., Electron affinity of selenium measured by photodetachment microscopy, Phys. Rev. A, 2012, 85, 1, 015401, https://doi.org/10.1103/PhysRevA.85.015401 . [all data]

Mansour, Edge, et al., 1988
Mansour, N.B.; Edge, C.J.; Larson, D.J., Laser Photodetachment Spectroscopy of Se- and S-, Nucl. Instrum. Meth. Phys. Res. B, 1988, 31, 1-2, 313-316, https://doi.org/10.1016/0168-583X(88)90437-5 . [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]

Kelly, 1987
Kelly, R.L., Atomic and ionic spectrum lines of hydrogen through kryton, J. Phys. Chem. Ref. Data, 1987, 16. [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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