Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

NCS anion


Reaction thermochemistry data

Go To: Top, Gas phase ion energetics 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

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

CNS- + Hydrogen cation = Isothiocyanic acid

By formula: CNS- + H+ = CHNS

Quantity Value Units Method Reference Comment
Deltar<325.3 ± 1.1kcal/molD-EABradforth, Kim, et al., 1993gas phase; Acid HNCS. HSCN up by ca. 8 kcal/mol
Deltar328.6 ± 5.1kcal/molG+TSBierbaum, Grabowski, et al., 1984gas phase; Acid: HNCS
Quantity Value Units Method Reference Comment
Deltar<317.6 ± 1.4kcal/molH-TSBradforth, Kim, et al., 1993gas phase; Acid HNCS. HSCN up by ca. 8 kcal/mol
Deltar320.9 ± 5.0kcal/molIMRBBierbaum, Grabowski, et al., 1984gas phase; Acid: HNCS

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
3.5370 ± 0.0050LPESBradforth, Kim, et al., 1993Acid HNCS. HSCN up by ca. 8 kcal/mol
1.99475SIPage, 1972The Magnetron method, lacking mass analysis, is not considered reliable.
2.147 ± 0.022SINapper and Page, 1963From (SCN)2 The Magnetron method, lacking mass analysis, is not considered reliable.

Protonation reactions

CNS- + Hydrogen cation = Isothiocyanic acid

By formula: CNS- + H+ = CHNS

Quantity Value Units Method Reference Comment
Deltar<325.3 ± 1.1kcal/molD-EABradforth, Kim, et al., 1993gas phase; Acid HNCS. HSCN up by ca. 8 kcal/mol
Deltar328.6 ± 5.1kcal/molG+TSBierbaum, Grabowski, et al., 1984gas phase; Acid: HNCS
Quantity Value Units Method Reference Comment
Deltar<317.6 ± 1.4kcal/molH-TSBradforth, Kim, et al., 1993gas phase; Acid HNCS. HSCN up by ca. 8 kcal/mol
Deltar320.9 ± 5.0kcal/molIMRBBierbaum, Grabowski, et al., 1984gas phase; Acid: HNCS

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.

Bradforth, Kim, et al., 1993
Bradforth, S.E.; Kim, E.H.; Arnold, D.W.; Neumark, D.M., Photoelectron Spectroscopy of CN-, NCO-, and NCS-, J. Chem. Phys., 1993, 98, 2, 800, https://doi.org/10.1063/1.464244 . [all data]

Bierbaum, Grabowski, et al., 1984
Bierbaum, V.M.; Grabowski, J.J.; DePuy, C.H., Gas-phase synthesis and reactions of nitrogen- and sulfur-containing anions, J. Phys. Chem., 1984, 88, 1389. [all data]

Page, 1972
Page, F.M., Experimental determination of the electron affinities of inorganic radicals, Adv. Chem. Ser., 1972, 36, 68. [all data]

Napper and Page, 1963
Napper, R.; Page, F.M., Determination of Electron Affinities. Part 5. Cyanide and Thiocyanate Radicals, Trans. Farad. Soc., 1963, 59, 1086, https://doi.org/10.1039/tf9635901086 . [all data]


Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References