dilithium oxide
- Formula: Li2O
- Molecular weight: 29.881
- IUPAC Standard InChI: InChI=1S/2Li.O
- IUPAC Standard InChIKey: XZIUWXMPQBQHMC-UHFFFAOYSA-N
- CAS Registry Number: 12057-24-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Dilithium monoxide
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, 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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -39.900 | kcal/mol | Review | Chase, 1998 | Data last reviewed in March, 1964 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°gas,1 bar | 54.759 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1964 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 4000. - 6000. |
|---|---|
| A | 14.68350 |
| B | 0.151136 |
| C | -0.035544 |
| D | 0.002754 |
| E | -0.395083 |
| F | -45.48829 |
| G | 70.60060 |
| H | -39.90010 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1964 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, 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.
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°liquid | -132.23 | kcal/mol | Review | Chase, 1998 | Data last reviewed in March, 1964 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°liquid,1 bar | 13.16 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1964 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -143.10 | kcal/mol | Review | Chase, 1998 | Data last reviewed in March, 1964 |
| Quantity | Value | Units | Method | Reference | Comment |
| S°solid | 9.046 | cal/mol*K | Review | Chase, 1998 | Data last reviewed in March, 1964 |
Liquid Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
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| Temperature (K) | 1843. - 4000. |
|---|---|
| A | 24.00000 |
| B | -0.000006 |
| C | 0.000002 |
| D | -1.689836×10-7 |
| E | -0.000005 |
| F | -141.8671 |
| G | 36.27127 |
| H | -132.2292 |
| Reference | Chase, 1998 |
| Comment | Data last reviewed in March, 1964 |
Solid Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (cal/mol*K)
H° = standard enthalpy (kcal/mol)
S° = standard entropy (cal/mol*K)
t = temperature (K) / 1000.
View plot Requires a JavaScript / HTML 5 canvas capable browser.
| Temperature (K) | 298. - 1600. | 1600. - 1843. |
|---|---|---|
| A | 16.41900 | 23.61580 |
| B | 1.306680 | 0.073781 |
| C | 5.540890 | 0.410053 |
| D | -2.269511 | -0.034789 |
| E | -0.382992 | -3.561420 |
| F | -149.3870 | -157.9710 |
| G | 26.14551 | 27.62651 |
| H | -143.1000 | -143.1000 |
| Reference | Chase, 1998 | Chase, 1998 |
| Comment | Data last reviewed in March, 1964 | Data last reviewed in March, 1964 |
Gas phase ion energetics data
Go To: Top, Gas phase thermochemistry data, Condensed phase 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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to Li2O+ (ion structure unspecified)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Proton affinity (review) | 288.2 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
| Quantity | Value | Units | Method | Reference | Comment |
| Gas basicity | 280.90 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 6.0 | EI | Ikeda, Tamaki, et al., 1982 | LBLHLM |
| 6.4 ± 0.2 | EI | Nakagawa, Asano, et al., 1981 | LLK |
| 6.19 ± 0.20 | EI | Hildenbrand, 1972 | LLK |
| 6.3 ± 1.0 | EI | Yamdagni, Pupp, et al., 1970 | RDSH |
| 7.0 ± 0.5 | EI | Zmbov, Ficalora, et al., 1968 | RDSH |
| 6.9 ± 0.3 | EI | White, Seshadri, et al., 1963 | RDSH |
| 6.8 ± 0.2 | EI | Berkowitz, Chupka, et al., 1959 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase 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.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
J. Phys. Chem. Ref. Data, Monograph 9, 1998, 1-1951. [all data]
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Ikeda, Tamaki, et al., 1982
Ikeda, Y.; Tamaki, M.; Matsumoto, G.; Amioka, K.; Mizuno, T.,
Mass spectrometric studies of lithium-containing oxides at high temperatures,
Spectrochim. Acta Part B, 1982, 37, 647. [all data]
Nakagawa, Asano, et al., 1981
Nakagawa, H.; Asano, M.; Kubo, K.,
Mass spectrometric study of the vaporization of lithium metasilicate,
J. Nucl. Mater., 1981, 102, 292. [all data]
Hildenbrand, 1972
Hildenbrand, D.L.,
Thermochemistry of the molecular species LiO, LiO+, and Li2O+.,
J. Chem. Phys., 1972, 57, 4556. [all data]
Yamdagni, Pupp, et al., 1970
Yamdagni, R.; Pupp, C.; Porter, R.F.,
Mass spectrometric study of the evaporation of lithium and sodium molybdates and tungstates,
J. Inorg. Nucl. Chem., 1970, 32, 3509. [all data]
Zmbov, Ficalora, et al., 1968
Zmbov, K.F.; Ficalora, P.; Margrave, J.L.,
Mass spectrometric studies at high temperatures. XXVIII. Gaseous ternary oxides, LiMO and LiMO2,
J. Inorg. Nucl. Chem., 1968, 30, 2059. [all data]
White, Seshadri, et al., 1963
White, D.; Seshadri, K.S.; Dever, D.F.; Mann, D.E.; Linevski, M.J.,
Infrared spectra and the structures and thermodynamics of gaseous LiO, Li2O, and Li2O2,
J. Chem. Phys., 1963, 39, 2463. [all data]
Berkowitz, Chupka, et al., 1959
Berkowitz, J.; Chupka, W.A.; Blue, G.D.; Margrave, J.L.,
Mass spectrometric study of the sublimation of lithium oxide,
J. Phys. Chem., 1959, 63, 644. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°liquid,1 bar Entropy of liquid at standard conditions (1 bar) S°solid Entropy of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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