Bicyclo[2.2.1]hept-2-ene, 5-methylene-
- Formula: C8H10
- Molecular weight: 106.1650
- IUPAC Standard InChIKey: WTQBISBWKRKLIJ-UHFFFAOYSA-N
- CAS Registry Number: 694-91-7
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: 5-Methylene-2-norbornene; 2-Methylene-5-norbornene; 2-Norbornene, 5-methylene-; 5-Methylene-2-norbornylene; 5-Methylenebicyclo(2.2.1)hept-2-ene; 5-Methylenenorbornene; 5-Methylenebicyclo[2.2.1]-2-heptene
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, References, Notes
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
C8H9- + =
By formula: C8H9- + H+ = C8H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 390.0 ± 2.1 | kcal/mol | G+TS | Lee and Squires, 1986 | gas phase; Ca. 1 kcal < H2O |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 383.1 ± 2.0 | kcal/mol | IMRB | Lee and Squires, 1986 | gas phase; Ca. 1 kcal < H2O |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, 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:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
View reactions leading to C8H10+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.01 | PE | Asmus and Klessinger, 1974 | Vertical value; LLK |
8.93 | PE | Cowling, Johnstone, et al., 1973 | Vertical value; LLK |
De-protonation reactions
C8H9- + =
By formula: C8H9- + H+ = C8H10
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 390.0 ± 2.1 | kcal/mol | G+TS | Lee and Squires, 1986 | gas phase; Ca. 1 kcal < H2O; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 383.1 ± 2.0 | kcal/mol | IMRB | Lee and Squires, 1986 | gas phase; Ca. 1 kcal < H2O; B |
IR Spectrum
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), UV/Visible spectrum, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Gas Phase Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
Owner | NIST Standard Reference Data Program Collection (C) 2018 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | NIST Mass Spectrometry Data Center |
State | gas |
Instrument | HP-GC/MS/IRD |
Mass spectrum (electron ionization)
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, UV/Visible spectrum, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | NIST Mass Spectrometry Data Center, 1990. |
NIST MS number | 114367 |
UV/Visible spectrum
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
Source | Weiss and Hammond, 1978 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 22132 |
Instrument | unknown |
Boiling point | 55/ 78 mm |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Lee and Squires, 1986
Lee, R.E.; Squires, R.R.,
Anionic homoaromaticity: A gas phase experimental study,
J. Am. Chem. Soc., 1986, 105, 5078. [all data]
Asmus and Klessinger, 1974
Asmus, P.; Klessinger, M.,
Photoelectron spectra of organic compounds. VI. Exocyclic methylene compounds,
Tetrahedron, 1974, 30, 2477. [all data]
Cowling, Johnstone, et al., 1973
Cowling, S.A.; Johnstone, R.A.W.; Gorman, A.A.; Smith, P.G.,
Photoelectron spectrum of 5-methylenenorborn-2-ene and through-space interactions (homobutadiene conjugation),
J. Chem. Soc., Chem. Commun., 1973, 627. [all data]
Weiss and Hammond, 1978
Weiss, R.G.; Hammond, G.S.,
J. Am. Chem. Soc., 1978, 100, 1172. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, References
- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.