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iodine bromide


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
Deltafgas9.771kcal/molReviewChase, 1998Data last reviewed in December, 1966
Quantity Value Units Method Reference Comment
gas,1 bar61.891cal/mol*KReviewChase, 1998Data last reviewed in December, 1966

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) 298. - 2300.2300. - 6000.
A 8.701392-16.28530
B 0.81408311.08160
C -0.640935-1.189970
D 0.2020200.027219
E -0.01412834.13760
F 7.09741055.70990
G 72.1260074.71250
H 9.7700919.770091
ReferenceChase, 1998Chase, 1998
Comment Data last reviewed in December, 1966 Data last reviewed in December, 1966

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 as indicated in comments:
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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Individual Reactions

Br2I- + iodine bromide = (Br2I- bullet iodine bromide)

By formula: Br2I- + BrI = (Br2I- bullet BrI)

Quantity Value Units Method Reference Comment
Deltar19.90kcal/molTherFinch, Gates, et al., 1977gas phase; Structure appears to be BrIBr-: Sanov, Sanford, et al., 1999; B
Deltar38.20kcal/molN/ACheck, Faust, et al., 2001gas phase; FeF4-; ; «DELTA»S(EA)=5.7; B
Quantity Value Units Method Reference Comment
Deltar27.30kcal/molN/ACheck, Faust, et al., 2001gas phase; FeF4-; ; «DELTA»S(EA)=5.7; B

2-Bromo-1,1,1-trifluoroethane + Iodine = 1,1,1-Trifluoro-2-iodoethane + iodine bromide

By formula: C2H2BrF3 + I2 = C2H2F3I + BrI

Quantity Value Units Method Reference Comment
Deltar6.6 ± 0.5kcal/molEqkBuckley, Ford, et al., 1980gas phase; GLC;hf298_gas[kcal/mol]=-166.8±1.1; Kolesov and Papina, 1983; ALS

Iodine + Bromotrifluoromethane = Methane, trifluoroiodo- + iodine bromide

By formula: I2 + CBrF3 = CF3I + BrI

Quantity Value Units Method Reference Comment
Deltar9.55 ± 0.03kcal/molEqkLord, Goy, et al., 1967gas phase; ALS

References

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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]

Finch, Gates, et al., 1977
Finch, A.; Gates, P.N.; Peake, S.J., Thermochemistry of polyhalides. III. Cesium and rubidium tetrachloroiodates, J. Inorg. Nucl. Chem., 1977, 39, 2135. [all data]

Sanov, Sanford, et al., 1999
Sanov, A.; Sanford, T.; Butler, L.J.; Vala, J.; Kosloff, R.; Lineberger, W.C., Photodissociation dynamics of gas-phase BrICl- and IBr2- anions, J. Phys. Chem. A, 1999, 103, 49, 10244-10254, https://doi.org/10.1021/jp9920803 . [all data]

Check, Faust, et al., 2001
Check, C.E.; Faust, T.O.; Bailey, J.M.; Wright, B.J.; Gilbert, T.M.; Sunderlin, L.S., Addition of Polarization and Diffuse Functions to the LANL2DZ Basis Set for P-Block Elements, J. Phys. Chem. A,, 2001, 105, 34, 8111, https://doi.org/10.1021/jp011945l . [all data]

Buckley, Ford, et al., 1980
Buckley, G.S.; Ford, W.G.F.; Rodgers, A.S., The thermochemistry of the gas phase reaction: CF3CH2Br + I2 = CF3CH2I + IBr. Polarity effects in thermochemistry, Thermochim. Acta, 1980, 42, 349-355. [all data]

Kolesov and Papina, 1983
Kolesov, V.P.; Papina, T.S., Thermochemistry of Haloethanes, Russ. Chem. Rev., 1983, 52, 425. [all data]

Lord, Goy, et al., 1967
Lord, A.; Goy, C.A.; Pritchard, H.O., The heats of formation of trifluoromethyl chloride and bromide, J. Phys. Chem., 1967, 71, 2705-2707. [all data]


Notes

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