Dewar benzene, hexamethyl-


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: Robert L. Brown and Stephen E. Stein

Reduced pressure boiling point

Tboil (K) Pressure (bar) Reference
333.20.027Aldrich Chemical Company Inc., 1990

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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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Individual Reactions

Dewar benzene, hexamethyl- = Benzene, hexamethyl-

By formula: C12H18 = C12H18

Quantity Value Units Method Reference Comment
Δr-235. ± 3.kJ/molCmAdam and Chang, 1969liquid phase; solvent: Pure phase
Δr-249.kJ/molEqkOth, 1968liquid phase; Heat of isomerization, see Oth, 1969

Hexamethyltetracyclo[2.2.0(2,6).0(3,5)]hexane = Dewar benzene, hexamethyl-

By formula: C12H18 = C12H18

Quantity Value Units Method Reference Comment
Δr-233. ± 3.kJ/molCmAdam and Chang, 1969liquid phase; solvent: Pure phase; Heat of isomerization

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.

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

Adam and Chang, 1969
Adam, W.; Chang, J.C., Kinetics and thermochemistry of valence isomerization by differential scanning calorimetry: the case of hexamethylprismane and hexamethyldewarbenzene, Int. J. Chem. Kinet., 1969, 1, 487-492. [all data]

Oth, 1968
Oth, J.F.M., The kinetics and thermochemistry of the thermal rearrangement of hexamethylbicyclo[2.2.0]hexa-2,5-diene (hexamethyldewarbenzene) and of hexamethyltetracyclo[2.2.0,0(2,6).0(3,5)]hexane (hexamethylprismane), Chem. Ber., 1968, 47, 1185-1195. [all data]

Oth, 1969
Oth, J.F.M., The kinetics and thermochemistry of the thermal rearrangement of hexamethyl(Dewar benzene) and of hexamethylprismane, Angew. Chem. Int. Ed. Engl., 1969, 7, 646. [all data]


Notes

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