Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. An organic cation, such as H3C, having one less electron than a corresponding free radical and with a positive charge localized on the carbon atom.
Wiktionary
- n. dated, chemistry A deprecated name for any of several organic cations; carbocation or carbenium
Examples
“Hypothetically and without reference to anyone living, dead or frozen in carbonium.”
“March 10, 2009 at 5:03 pm yhv-if it is true then the bullet they are talking about is carbonium or something. it was used in the wolverine : origins comic book to paralyze daken and is the same metal that coats omega reds tenticles. that is the only explanation of this “magic bullet”.”
Super Early ‘X-Men Origins: Wolverine’ Review! Updated with Spoilers | We Are Movie Geeks
“Olah found that the superacids were so strong that they could donate a proton to simple saturated hydrocarbons, and that these penta-coordinated carbonium ions could undergo further reactions.”
“Olah found that there are two groups of carbocations, the trivalent ones called carbenium ions, in which the positive carbon atom is surrounded by three atoms, and those in which the positive carbon is surrounded by five atoms, called carbonium ions.”
“Winstein claimed that the norbornyl cation had a structure containing a penta-coordinated carbon i.e. that it was a carbonium ion.”
“Thus, pentacoordinated carbonium ions have been obtained from methane higher alkanes and various cycloalkanes.”
“As the structures of carbonium ions were of great theoretical interest, the problem fascinated many leading physical organic chemists, yet despite great efforts and many ingenious experiments, no definitive solution was found until the”
“Carbenium ion structures and carbonium ion structures (non-classical ions) were suggested as hypothetical intermediates.”
“Olah also found that superacids are so strong that they can even bind more hydrogen ions to simple hydrocarbons, forming pentacoordinated carbocations (carbonium ions).”
“In the second approach I have analyzed, with the aid of various semiempirical methods, the molecular orbitals of most types of reactive intermediates in organic chemistry-carbonium ions, diradicals, methylenes, benzynes, etc.”
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