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magnesium

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Gas phase 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.

Quantity Value Units Method Reference Comment
Deltafgas147.1 ± 0.8kJ/molReviewCox, Wagman, et al., 1984CODATA Review value
Deltafgas147.10kJ/molReviewChase, 1998Data last reviewed in September, 1983
Quantity Value Units Method Reference Comment
gas,1 bar148.648 ± 0.003J/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
gas,1 bar148.65J/mol*KReviewChase, 1998Data last reviewed in September, 1983

Gas Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 1366.104 - 2200.2200. - 6000.
A 20.7730647.60848
B 0.035592-15.40875
C -0.0319172.875965
D 0.009109-0.120806
E 0.000461-27.01764
F 140.907197.40017
G 173.7799177.2305
H 147.1002147.1002
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in September, 1983 Data last reviewed in September, 1983

Condensed phase 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.

Quantity Value Units Method Reference Comment
Deltafliquid4.79kJ/molReviewChase, 1998Data last reviewed in September, 1983
Quantity Value Units Method Reference Comment
liquid,1 bar34.46J/mol*KReviewChase, 1998Data last reviewed in September, 1983
Quantity Value Units Method Reference Comment
solid,1 bar32.67 ± 0.10J/mol*KReviewCox, Wagman, et al., 1984CODATA Review value
Quantity Value Units Method Reference Comment
solid32.67J/mol*KReviewChase, 1998Data last reviewed in September, 1983

Liquid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 923. - 1366.104
A 34.30901
B -7.471034×10-10
C 6.146212×10-10
D -1.598238×10-10
E -1.152011×10-11
F -5.439367
G 75.98311
H 4.790011
ReferenceChase, 1998
Comment Data last reviewed in September, 1983

Solid Phase Heat Capacity (Shomate Equation)

Cp° = A + B*t + C*t2 + D*t3 + E/t2
H° − H°298.15= A*t + B*t2/2 + C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − E/(2*t2) + G
    Cp = heat capacity (J/mol*K)
    H° = standard enthalpy (kJ/mol)
    S° = standard entropy (J/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 298. - 923.
A 26.54083
B -1.533048
C 8.062443
D 0.572170
E -0.174221
F -8.501596
G 63.90181
H 0.000000
ReferenceChase, 1998
Comment Data last reviewed in September, 1983

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 by: Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director

Quantity Value Units Method Reference Comment
Tboil1363.KN/AHonig and Kramer, 1969Uncertainty assigned by TRC = 1.5 K
Quantity Value Units Method Reference Comment
Ttriple922.KN/AHonig and Kramer, 1969Uncertainty assigned by TRC = 0.6 K

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: José A. Martinho Simões

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

Nitrosyl bromide (l) + magnesium (cr) = C9H19BrMg (solution)

By formula: BrNO (l) + Mg (cr) = C9H19BrMg (solution)

Quantity Value Units Method Reference Comment
Deltar-231.0 ± 4.4kJ/molRSCHolm, 1981solvent: Diethyl ether; Due to the possibility of side reactions, the enthalpy of reaction was not considered to be sufficiently reliable for deriving the enthalpy of formation of the Grignard reagent Holm, 1981

Benzene, (bromomethyl)- (l) + magnesium (cr) = C7H7BrMg (solution)

By formula: C7H7Br (l) + Mg (cr) = C7H7BrMg (solution)

Quantity Value Units Method Reference Comment
Deltar-275.7 ± 4.4kJ/molRSCHolm, 1981solvent: Diethyl ether; Due to the possibility of side reactions, the enthalpy of reaction was not considered to be sufficiently reliable for deriving the enthalpy of formation of the Grignard reagent Holm, 1981

magnesium (cr) + Methane, bromo- (l) = CH3BrMg (solution)

By formula: Mg (cr) + CH3Br (l) = CH3BrMg (solution)

Quantity Value Units Method Reference Comment
Deltar-267.8 ± 4.4kJ/molRSCHolm, 1981solvent: Diethyl ether; Due to the possibility of side reactions, the enthalpy of reaction was not considered to be sufficiently reliable for deriving the enthalpy of formation of the Grignard reagent Holm, 1981

magnesium (cr) + Methane, iodo- (solution) = CH3IMg (solution)

By formula: Mg (cr) + CH3I (solution) = CH3IMg (solution)

Quantity Value Units Method Reference Comment
Deltar-273.6 ± 0.8kJ/molRSCCarson and Skinner, 1950solvent: Diethyl ether; It was assumed that MeI(l) has a negligible solution enthalpy in ether

21,3-Cyclopentadiene (l) + magnesium (cr) = Magnesium, bis(η(5)-2,4-cyclopentadien-1-yl)- (cr) + Hydrogen (g)

By formula: 2C5H6 (l) + Mg (cr) = C10H10Mg (cr) + H2 (g)

Quantity Value Units Method Reference Comment
Deltar-142.5 ± 2.9kJ/molRSCHull, Reid, et al., 1967Please also see Pedley and Rylance, 1977 and Cox and Pilcher, 1970.

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

View reactions leading to Mg+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)7.64624eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)819.6kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity797.3kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
7.64624EVALLide, 1992LL
7.646SKelly, 1987LBLHLM
7.3EISasamoto, Hara, et al., 1981LLK
7.72 ± 0.05EIRauh and Ackermann, 1979LLK
7.63 ± 0.08EIRauh and Ackermann, 1974LLK
7.646SMoore, 1970RDSH
7.64623SRisberg, 1965RDSH
7.5 ± 0.2SIZinkiewicz, 1553RDSH

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, 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.

Cox, Wagman, et al., 1984
Cox, J.D.; Wagman, D.D.; Medvedev, V.A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. [all data]

Chase, 1998
Chase, M.W., Jr., NIST-JANAF Themochemical Tables, Fourth Edition, J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]

Honig and Kramer, 1969
Honig, R.E.; Kramer, D.A., Vapor pressure data for the solid and liquid elements, RCA Rev., 1969, 1969, 285. [all data]

Holm, 1981
Holm, T., J. Chem. Soc., Perkin Trans. II, 1981, 464.. [all data]

Carson and Skinner, 1950
Carson, A.S.; Skinner, H.A., Nature, 1950, 165, 484. [all data]

Hull, Reid, et al., 1967
Hull, H.S.; Reid, A.F.; Turnbull, A.G., Inorg. Chem., 1967, 6, 805. [all data]

Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J., Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds in Academic Press, New York, 1970. [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]

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]

Sasamoto, Hara, et al., 1981
Sasamoto, T.; Hara, H.; Sata, T., Mass spectrometric study of the vaporization of magnesium oxide from magnesium aluminate spinel, Bull. Chem. Soc. Jpn., 1981, 54, 3327. [all data]

Rauh and Ackermann, 1979
Rauh, E.G.; Ackermann, R.J., The first ionization potentials of the transition metals, J. Chem. Phys., 1979, 70, 1004. [all data]

Rauh and Ackermann, 1974
Rauh, E.G.; Ackermann, R.J., First ionization potentials of some refractory oxide vapors, J. Chem. Phys., 1974, 60, 1396. [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]

Risberg, 1965
Risberg, G., The spectrum of atomic magnesium, Mg I, Ark. Fys., 1965, 28, 381. [all data]

Zinkiewicz, 1553
Zinkiewicz, J.M., Determination of the ionization potential of Ca and Mg atoms by the surface ionization method using a mass spectrometer, Proc. Colloq. Spectros. Intern., 14th Debrecen, Hung., 1967,, 1553, 3. [all data]


Notes

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