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HCðCCðCCðC 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

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

C6H- + Hydrogen cation = 1,3,5-Hexatriyne

By formula: C6H- + H+ = C6H2

Quantity Value Units Method Reference Comment
Deltar1501. ± 21.kJ/molD-EAGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion
Deltar1486. ± 13.kJ/molG+TSNatterer, Koch, et al., 1994gas phase; Acidity between (Me3Si)2NH and 4-Me-pyrazole
Quantity Value Units Method Reference Comment
Deltar1467. ± 21.kJ/molH-TSGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion
Deltar1452. ± 13.kJ/molIMRBNatterer, Koch, et al., 1994gas phase; Acidity between (Me3Si)2NH and 4-Me-pyrazole

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
3.8090 ± 0.0010N/AGarand, Yacovitch, et al., 2010Calns says linear H-terminated structure for anion
3.7960 ± 0.0050LPDPino, Tulej, et al., 2002 
3.809 ± 0.015LPESTaylor, Xu, et al., 1998 
3.96 ± 0.26D-EANatterer, Koch, et al., 1994Acidity between (Me3Si)2NH and 4-Me-pyrazole

Protonation reactions

C6H- + Hydrogen cation = 1,3,5-Hexatriyne

By formula: C6H- + H+ = C6H2

Quantity Value Units Method Reference Comment
Deltar1501. ± 21.kJ/molD-EAGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion
Deltar1486. ± 13.kJ/molG+TSNatterer, Koch, et al., 1994gas phase; Acidity between (Me3Si)2NH and 4-Me-pyrazole
Quantity Value Units Method Reference Comment
Deltar1467. ± 21.kJ/molH-TSGarand, Yacovitch, et al., 2010gas phase; Calns says linear H-terminated structure for anion
Deltar1452. ± 13.kJ/molIMRBNatterer, Koch, et al., 1994gas phase; Acidity between (Me3Si)2NH and 4-Me-pyrazole

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]

Natterer, Koch, et al., 1994
Natterer, J.; Koch, W.; Schroder, D.; Goldberg, N.; Schwarz, H., Combined experimental and theoretical study of the C-H bond strength and the gas phase acidity of triacetylene, C6H2, and the electron affinity of the C6H. radical, Chem. Phys. Lett., 1994, 229, 4-5, 429, https://doi.org/10.1016/0009-2614(94)01075-7 . [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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