H2S+

Formula: H₂S⁺
Molecular weight: 34.080
CAS Registry Number: 77544-69-5
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Reaction thermochemistry data

Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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Individual Reactions

(H₂S⁺ • ) + = (H₂S⁺ • 2)

By formula: (H₂S⁺ • H₂S) + H₂S = (H₂S⁺ • 2H₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	4.2	kcal/mol	PI	Prest, Tzeng, et al., 1983	gas phase
Δ_rH°	3.2	kcal/mol	PI	Walters and Blais, 1981	gas phase

H₂S⁺ + = (H₂S⁺ • )

By formula: H₂S⁺ + H₂S = (H₂S⁺ • H₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	21.2	kcal/mol	PI	Prest, Tzeng, et al., 1983	gas phase
Δ_rH°	17.0	kcal/mol	PI	Walters and Blais, 1981	gas phase

(H₂S⁺ • 2) + = (H₂S⁺ • 3)

By formula: (H₂S⁺ • 2H₂S) + H₂S = (H₂S⁺ • 3H₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.2	kcal/mol	PI	Walters and Blais, 1981	gas phase

(H₂S⁺ • 3) + = (H₂S⁺ • 4)

By formula: (H₂S⁺ • 3H₂S) + H₂S = (H₂S⁺ • 4H₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	1.4	kcal/mol	PI	Walters and Blais, 1981	gas phase

(H₂S⁺ • 4) + = (H₂S⁺ • 5)

By formula: (H₂S⁺ • 4H₂S) + H₂S = (H₂S⁺ • 5H₂S)

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	2.6	kcal/mol	PI	Walters and Blais, 1981	gas phase

References

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Prest, Tzeng, et al., 1983
Prest, H.F.; Tzeng, W.-B.; Brom, J.M., Jr.; Ng, C.Y., Photoionization study of (H₂S)₂ and (H₂S)₃, J. Am. Chem. Soc., 1983, 105, 7531. [all data]

Walters and Blais, 1981
Walters, E.A.; Blais, N.C., Molecular beam photoionization of (H₂S)n,n = 1 - 7, J. Chem. Phys., 1981, 75, 4208. [all data]

Notes

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Symbols used in this document:

Δ_rH° Enthalpy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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