alkanium ions

https://doi.org/10.1351/goldbook.A00223
Carbocations derived from alkanes by $C$-hydronation containing at least one pentacoordinate carbon atom, e.g. $\ce{^{+}CH5}$ methanium, $\ce{[C2H7]^{+}$ ethanium.
See also: carbonium ions
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1313 [Terms] [Paper]
Citation: 'alkanium ions' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.A00223 RIS BibTex EndNote
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