Trivalent-Tricoordinate Classical Carbenium Ions

This is the class of carbocations that contains an xp -hybridized electron-deficient carbocation center, which tends to be planar in the absence of constraining skeletal rigidity or steric constrains. The carbenium carbon contains six valence electrons and the structure of the carbocation can always be adequately described using only two-center, two-electron bonds [(2c-2e)  

Lewis valence bond structures]. The methyl cation or methenium ion (CH3+) may be considered the parent of the trivalent carbocations. The trivalent carbocations are also stiU referred to as classical ions. 

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Trivalent-tricoordinate (Hypocoordinate) carbenium ions Classical ions CHg"... 

Trivalent-tricoordinate carbenium ions "Classical" ions CH3-... 

Carbenium ions Compounds containing a trivalent, tricoordinate carbon bearing a positive charge. Also called classical cations. ... 

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