Calcium ion (1+)
- Formula: Ca+
- Molecular weight: 40.077
- IUPAC Standard InChI: InChI=1S/Ca/q+1
- IUPAC Standard InChIKey: JDMNMMCDWTVNSP-UHFFFAOYSA-N
- CAS Registry Number: 14102-48-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Calcium cation
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Reaction thermochemistry data
Go To: Top, 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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar
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
( • 2
) +
= (
• 3
)
By formula: (Ca+ • 2H2O) + H2O = (Ca+ • 3H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 21.5 | kcal/mol | HPMS | Kochanski and Constantin, 1987 | gas phase; M |
( • 3
) +
= (
• 4
)
By formula: (Ca+ • 3H2O) + H2O = (Ca+ • 4H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 18.7 | kcal/mol | HPMS | Kochanski and Constantin, 1987 | gas phase; M |
( • 4
) +
= (
• 5
)
By formula: (Ca+ • 4H2O) + H2O = (Ca+ • 5H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.5 | kcal/mol | HPMS | Kochanski and Constantin, 1987 | gas phase; M |
( •
) +
= (
• 2
)
By formula: (Ca+ • H2O) + H2O = (Ca+ • 2H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 24. | kcal/mol | HPMS | Kochanski and Constantin, 1987 | gas phase; M |
+
= (
•
)
By formula: Ca+ + N2 = (Ca+ • N2)
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.0 | 296. | FA | Spears and Fehsenfeld, 1972 | gas phase; M |
+
= (
•
)
By formula: Ca+ + O2 = (Ca+ • O2)
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.0 | 296. | FA | Spears and Fehsenfeld, 1972 | gas phase; M |
+
= (
•
)
By formula: Ca+ + H2O = (Ca+ • H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 28. | kcal/mol | HPMS | Kochanski and Constantin, 1987 | gas phase; M |
+
= (
•
)
By formula: Ca+ + C9H12 = (Ca+ • C9H12)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 32.3 | kcal/mol | RAK | Gapeev and Dunbar, 2000 | RCD |
References
Go To: Top, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Kochanski and Constantin, 1987
Kochanski, E.; Constantin, E.,
Theoretical and Experimental Studies of the System Ca+(H2O)n for n=1 to 10,
J. Chem. Phys., 1987, 87, 3, 1661, https://doi.org/10.1063/1.453229
. [all data]
Spears and Fehsenfeld, 1972
Spears, K.G.; Fehsenfeld, F.C.,
Termolecular Association Reactions of Mg, Ca, and Ba Ions,
J. Chem. Phys., 1972, 56, 11, 5698, https://doi.org/10.1063/1.1677091
. [all data]
Gapeev and Dunbar, 2000
Gapeev, A.; Dunbar, R.C.,
Binding of Alkaline Earth Halide Ions MX+ to Benzene and Mesitylene,
J. Am. Soc. Mass Spectrom., 2000, 13, 5, 477, https://doi.org/10.1016/S1044-0305(02)00373-2
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
T Temperature 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
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