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magnesium bromide


Gas phase thermochemistry data

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

Quantity Value Units Method Reference Comment
Deltafgas-72.400kcal/molReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
gas,1 bar71.948cal/mol*KReviewChase, 1998Data last reviewed in June, 1974

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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 2000. - 6000.
A 14.82150
B 0.070295
C -0.019036
D 0.001624
E -0.073111
F -77.06740
G 89.45179
H -72.40019
ReferenceChase, 1998
Comment Data last reviewed in June, 1974

Condensed phase thermochemistry data

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

Quantity Value Units Method Reference Comment
Deltafliquid-117.21kcal/molReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
liquid,1 bar35.968cal/mol*KReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
Deltafsolid-125.30kcal/molReviewChase, 1998Data last reviewed in June, 1974
Quantity Value Units Method Reference Comment
solid27.990cal/mol*KReviewChase, 1998Data last reviewed in June, 1974

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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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Temperature (K) 984. - 2000.
A 25.00000
B -6.067520×10-8
C 3.624381×10-8
D -7.385101×10-9
E -4.555980×10-9
F -127.1060
G 60.90449
H -117.2100
ReferenceChase, 1998
Comment Data last reviewed in June, 1974

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 (cal/mol*K)
    H° = standard enthalpy (kcal/mol)
    S° = standard entropy (cal/mol*K)
    t = temperature (K) / 1000.

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View table.

Temperature (K) 298. - 984.
A 20.48140
B -3.984511
C 6.190311
D -1.404941
E -0.205494
F -131.9740
G 52.54469
H -125.3000
ReferenceChase, 1998
Comment Data last reviewed in June, 1974

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

Hydrogen bromide (g) + CH3BrMg (solution) = Methane (solution) + Br2Mg (solution)

By formula: HBr (g) + CH3BrMg (solution) = CH4 (solution) + Br2Mg (solution)

Quantity Value Units Method Reference Comment
Deltar-65.61 ± 0.53kcal/molRSCHolm, 1981solvent: Diethyl ether; The enthalpy of formation was calculated using the assumptions and the auxiliary data in Holm, 1981, except for the organic compound, whose enthalpy of formation was quoted from Pedley, 1994

Hydrogen bromide (g) + C2H3BrMg (solution) = Ethylene (solution) + Br2Mg (solution)

By formula: HBr (g) + C2H3BrMg (solution) = C2H4 (solution) + Br2Mg (solution)

Quantity Value Units Method Reference Comment
Deltar-70.29 ± 0.53kcal/molRSCHolm, 1981solvent: Tetrahydrofuran

C4H9BrMg (solution) + Hydrogen bromide (g) = Butane (solution) + Br2Mg (solution)

By formula: C4H9BrMg (solution) + HBr (g) = C4H10 (solution) + Br2Mg (solution)

Quantity Value Units Method Reference Comment
Deltar-69.91 ± 0.53kcal/molRSCHolm, 1981solvent: Diethyl ether

C4H9BrMg (solution) + Hydrogen bromide (g) = Butane (solution) + Br2Mg (solution)

By formula: C4H9BrMg (solution) + HBr (g) = C4H10 (solution) + Br2Mg (solution)

Quantity Value Units Method Reference Comment
Deltar-73.11 ± 0.53kcal/molRSCHolm, 1981solvent: Diethyl ether

C5H11BrMg (solution) + Hydrogen bromide (g) = Pentane (solution) + Br2Mg (solution)

By formula: C5H11BrMg (solution) + HBr (g) = C5H12 (solution) + Br2Mg (solution)

Quantity Value Units Method Reference Comment
Deltar-73.21 ± 0.53kcal/molRSCHolm, 1981solvent: Diethyl ether

C19H15BrMg (solution) + Hydrogen bromide (g) = Triphenylmethane (solution) + Br2Mg (solution)

By formula: C19H15BrMg (solution) + HBr (g) = C19H16 (solution) + Br2Mg (solution)

Quantity Value Units Method Reference Comment
Deltar-55.21 ± 0.53kcal/molRSCHolm, 1981solvent: Diethyl ether

C3H7BrMg (solution) + Hydrogen bromide (g) = Propane (solution) + Br2Mg (solution)

By formula: C3H7BrMg (solution) + HBr (g) = C3H8 (solution) + Br2Mg (solution)

Quantity Value Units Method Reference Comment
Deltar-73.11 ± 0.53kcal/molRSCHolm, 1981solvent: Diethyl ether

Hydrogen bromide (g) + C2H5BrMg (solution) = Ethane (solution) + Br2Mg (solution)

By formula: HBr (g) + C2H5BrMg (solution) = C2H6 (solution) + Br2Mg (solution)

Quantity Value Units Method Reference Comment
Deltar-71.51 ± 0.53kcal/molRSCHolm, 1981solvent: Diethyl ether

C10H22Mg (cr) + Hydrogen (g) + Bromine (l) = 2Neopentane (l) + Br2Mg (cr)

By formula: C10H22Mg (cr) + H2 (g) + Br2 (l) = 2C5H12 (l) + Br2Mg (cr)

Quantity Value Units Method Reference Comment
Deltar-160.0 ± 1.6kcal/molRSCAkkerman, Schat, et al., 1983 

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry 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 as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

IE (eV) Method Reference Comment
10.47PELee and Potts, 1979LLK
10.65 ± 0.15EIBerkowitz and Marquart, 1962RDSH
10.85 ± 0.03PELee and Potts, 1979Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
Br+16. ± 1.?EIBerkowitz and Marquart, 1962RDSH
MgBr+12.0 ± 0.4BrEIBerkowitz and Marquart, 1962RDSH
Br2+17. ± 1.MgEIBerkowitz and Marquart, 1962RDSH
Mg+16. ± 1.?EIBerkowitz and Marquart, 1962RDSH

References

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

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

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

Pedley, 1994
Pedley, J.B., Thermodynamic Data and Structures of Organic Compounds; Thermodynamics Research Center Data Series, Vol I, Thermodynamics Research Center, College Station, 1994. [all data]

Akkerman, Schat, et al., 1983
Akkerman, O.S.; Schat, G.; Evers, E.A.I.M.; Bickelhaupt, F., Recl. Trav. Chim. Pays-Bas, 1983, 102, 109. [all data]

Lee and Potts, 1979
Lee, E.P.F.; Potts, A.W., An investigation of the valence shell electronic structure of alkaline earth halides by using Ab initio S. C. F. calculations and photoelectron spectroscopy, Proc. R. Soc. London A:, 1979, 365, 395. [all data]

Berkowitz and Marquart, 1962
Berkowitz, J.; Marquart, J.R., Mass-spectrometric study of the magnesium halides, J. Chem. Phys., 1962, 37, 1853. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References