carbonium ion

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Related to carbonium ions: Carbenium ion

car·bo·ni·um ion

 (kär-bō′nē-əm)
n.
An organic cation, such as H5C+, having a hypervalent carbon atom and a positive charge localized on the carbon atom.

carbonium ion

(kɑːˈbəʊnɪəm)
n
(Chemistry) a positively charged organic ion in which most of the positive charge is localized on a carbon atom. Compare carbanion
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Using low heating rate, the accessibility of initial fibers for carbonium ions (+C[H.
But for C4 alkanes, the forming rate of carbonium ions is low; in addition, C4 alkenes can convert into C4 alkanes through hydrogen transfer reactions, so the conversion of C4 alkanes at low reaction temperature is low.
This rule allows carbonium ions of different structure to be distinguished between those that could create tumors in organisms and those that cannot (ref.