Bicyclo[1.1.1]pentane


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.

Data compiled by: Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

Cp,gas (J/mol*K) Temperature (K) Reference Comment
33.97100.Wiberg K.B., 1975 
49.41200.
73.14273.15
82.34298.15
83.05300.
119.50400.
150.41500.

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

Quantity Value Units Method Reference Comment
Tboil309.KN/ABuckingham and Donaghy, 1982 

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

C5H7- + Hydrogen cation = Bicyclo[1.1.1]pentane

By formula: C5H7- + H+ = C5H8

Quantity Value Units Method Reference Comment
Δr1720. ± 15.kJ/molCIDTGraul and Squires, 1990gas phase; Reed, Kass, et al., 2002 claim this is the 1,4-pentadien-2-ide anion
Quantity Value Units Method Reference Comment
Δr1684. ± 15.kJ/molH-TSGraul and Squires, 1990gas phase; Reed, Kass, et al., 2002 claim this is the 1,4-pentadien-2-ide anion

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

View reactions leading to C5H8+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
9.65EIWiberg and Connor, 1966RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C5H7+10.60HEIWiberg and Connor, 1966RDSH

De-protonation reactions

C5H7- + Hydrogen cation = Bicyclo[1.1.1]pentane

By formula: C5H7- + H+ = C5H8

Quantity Value Units Method Reference Comment
Δr1720. ± 15.kJ/molCIDTGraul and Squires, 1990gas phase; Reed, Kass, et al., 2002 claim this is the 1,4-pentadien-2-ide anion; B
Quantity Value Units Method Reference Comment
Δr1684. ± 15.kJ/molH-TSGraul and Squires, 1990gas phase; Reed, Kass, et al., 2002 claim this is the 1,4-pentadien-2-ide anion; B

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.

Wiberg K.B., 1975
Wiberg K.B., Vibrational spectrum of bicyclo[1.1.1]pentane, Spectrochim. Acta, 1975, A31, 57-73. [all data]

Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M., Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [all data]

Graul and Squires, 1990
Graul, S.T.; Squires, R.R., Gas-Phase Acidities Derived from Threshold Energies for Activated Reactions, J. Am. Chem. Soc., 1990, 112, 7, 2517, https://doi.org/10.1021/ja00163a007 . [all data]

Reed, Kass, et al., 2002
Reed, D.R.; Kass, S.R.; Mondanaro, K.R.; Dailey, W.P., Formation of a 1-bicyclo[1.1.1]pentyl anion and an experimental determination of the acidity and C-H bond dissociation energy of 3-tert-butylbicyclo[1.1.1]pentane, J. Am. Chem. Soc., 2002, 124, 11, 2790-2795, https://doi.org/10.1021/ja0121890 . [all data]

Wiberg and Connor, 1966
Wiberg, K.B.; Connor, D.S., Bicyclo[1.1.1]pentane, J. Am. Chem. Soc., 1966, 88, 4437. [all data]


Notes

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