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HCðCCðCCðCCðC anion


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

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Individual Reactions

C8H- + Hydrogen cation = 1,3,5,7-Octatetrayne

By formula: C8H- + H+ = C8H2

Quantity Value Units Method Reference Comment
Deltar1485. ± 21.kJ/molD-EAGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion
Quantity Value Units Method Reference Comment
Deltar1451. ± 21.kJ/molH-TSGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion

Gas phase ion energetics data

Go To: Top, 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 by: John E. Bartmess

Electron affinity of neutral species

EAneutral (eV) Method Reference Comment
3.9701 ± 0.0010N/AGarand, Yacovitch, et al., 2010Calns says linear H-terminated structure for anion
3.956 ± 0.010LPDPino, Tulej, et al., 2002 
3.966 ± 0.010LPESTaylor, Xu, et al., 1998 

Protonation reactions

C8H- + Hydrogen cation = 1,3,5,7-Octatetrayne

By formula: C8H- + H+ = C8H2

Quantity Value Units Method Reference Comment
Deltar1485. ± 21.kJ/molD-EAGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion
Quantity Value Units Method Reference Comment
Deltar1451. ± 21.kJ/molH-TSGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion

References

Go To: Top, 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.

Garand, Yacovitch, et al., 2010
Garand, E.; Yacovitch, T.I.; Zhou, J.; Sheehan, S.M.; Neumark, D.M., Slow photoelectron velocity-map imaging of the CnH- (n=5-9) anions, Chem. Sci., 2010, 1, 2, 192-201, https://doi.org/10.1039/c0sc00164c . [all data]

Pino, Tulej, et al., 2002
Pino, T.; Tulej, M.; Guthe, F.; Pachkov, M.; Maier, J.P., Photodetachment spectroscopy of the C2nH- (n=2-4) anions in the vicinity of their electron detachment threshold, J. Chem. Phys., 2002, 116, 14, 6126-6131, https://doi.org/10.1063/1.1451248 . [all data]

Taylor, Xu, et al., 1998
Taylor, T.R.; Xu, C.S.; Neumark, D.M., Photoelectron spectra of the C2nH- (n=1-4) and C2nD- (n=1-3) anions, J. Chem. Phys., 1998, 108, 24, 10018-10026, https://doi.org/10.1063/1.476462 . [all data]


Notes

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