Lithium monoxide anion
| Names | |
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| IUPAC name
Lithium monoxide anion
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| Identifiers | |
3D model (JSmol)
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CompTox Dashboard (EPA)
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| Properties | |
| LiO− | |
| Conjugate acid | Lithium hydroxide |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards
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Extremely corrosive |
| Related compounds | |
Related bases
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Meta-diethynylbenzene dianion Para-diethynylbenzene dianion |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Lithium monoxide anion (LiO−) is a superbase existing in the gas phase. It was the strongest known base until 2008, when the isomeric diethynylbenzene dianions were determined to have a higher proton affinity. Ortho-diethynylbenzene dianion is the strongest base, followed by meta-diethynylbenzene dianion and para-diethynylbenzene dianion. The methyl anion CH3− was the strongest known base before lithium monoxide anion was discovered.[2]
LiO− has a proton affinity of ~1782 kJ mol−1.[3]
fugma fugma fugma
References
- ^ "Lithium oxide anion". webbook.nist.gov.
- ^ Poad, Berwyck L. J.; Reed, Nicholas D.; Hansen, Christopher S.; Trevitt, Adam J.; Blanksby, Stephen J.; Mackay, Emily G.; Sherburn, Michael S.; Chan, Bun; Radom, Leo (2016). "Preparation of an ion with the highest calculated proton affinity: ortho-diethynylbenzene dianion". Chemical Science. 7 (9): 6245–6250. doi:10.1039/C6SC01726F. PMC 6024202. PMID 30034765.
- ^ Srivastava, Ambrish Kumar; Misra, Neeraj (6 February 2016). "OLi3O− anion: Designing the strongest base to date using OLi3 superalkali". Chemical Physics Letters. 648: 152–155. Bibcode:2016CPL...648..152S. doi:10.1016/j.cplett.2016.02.010.