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carbonium

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carbonium
carbonium Chem. (kɑːˈbəʊnɪəm) [f. carbo- + -onium as in ammonium.] (a) Formerly, ‘the univalent radical CH3 in the capacity..of a base former analogous to ammonium’ (Webster 1909); (b) used attrib. of an organic ion containing positively charged carbon. Cf. carbanion.1902 Jrnl. Chem. Soc. LXXXII. i.... Oxford English Dictionary
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Carbonium ion
The next simplest carbonium ions after methanium have two carbon atoms. The carbonium ion has a planar geometry. In older literature, the name "carbonium ion" was used for what is today called carbenium. wikipedia.org
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-onium
-onium, suffix [abstracted from ammonium.] 1. Chem. Used in forming the names of complex cations that contain a more or less electronegative central atom, usu. bonded to a number of protons (or to other species that are regarded as substituents), as arsonium, carbonium, hydrazonium, nitronium, oxoni... Oxford English Dictionary
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Methanium
It is a superacid and one of the onium ions, indeed the simplest carbonium ion. wikipedia.org
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2-Acetylaminofluorene
This intermediate can spontaneously rearrange to form the arylamidonium ion and a carbonium ion which can interact directly with DNA to produce DNA adducts The reactive nitrenium, carbonium and arylamidonium ion metabolites of 2-AAF react with the nucleophilic groups in DNA, proteins and endogenous thiols wikipedia.org
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carbanion
carbanion Chem. (kɑːˈbænaɪən) [f. carb- + anion.] An organic ion containing negatively charged carbon. Cf. carbonium (b).1933 Wallis & Adams in Jrnl. Amer. Chem. Soc. LV. 3838 For the sake of clearness in discussion all tricovalent carbon compounds may be divided into three classes: (1) ‘carbanions’... Oxford English Dictionary
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Carbenium ion
In older literature the name carbonium ion was used for this class, but now it refers exclusively to another family of carbocations, the carbonium ions wikipedia.org
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protonation
protonation Chem. (prəʊtəˈneɪʃən) [f. prec. + -ion.] The action or result of protonating.1948 Jrnl. Biol. Chem. CLXXV. 249 The effectiveness of the positively charged ammonium group in preventing appreciable protonation of the carboxyl group of the l-leucine cation in 100 per cent sulfuric acid can ... Oxford English Dictionary
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Onium ion
boron group) onium cations boronium cation, (protonated borane) further boronium cations, (protonated boranes) Group 14 (carbon group) onium cations carbonium charge. alkynium cations, (n ≥ 2) (protonated alkynes) methynium cation, (protonated methylidyne radical) ethynium, (protonated ethyne) See also Carbonium wikipedia.org
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Ethanium
Ethanium is one of the simplest carbonium ions (after methanium ). It was first detected as a rarefied gas in 1960 by S. Wexler and N. Jesse. wikipedia.org
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碳正离子
Laber Tetrahedron Volume 4, Issues 1-2 , 1958, Pages 178-185 The 7-norbornadienyl carbonium ion Paul R. Story and Martin Saunders J. Am. Chem. Olah - Nobel Lecture Stable Carbonium Ions. XVII.1a Cyclopropyl Carbonium Ions and Protonated Cyclopropyl Ketones Charles U. Pittman Jr., George A. wikipedia.org
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Semustine
The common property of alkylating agents, including semustine, is their capacity to become very strong electrophiles through the formation of (chloro-) carbonium Most of the biological effect is due to the generation of the chloroethyl carbonium ion from the ring hydroxylated metabolite. wikipedia.org
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Magic acid
was developed in the 1960s by the George Olah lab at Case Western Reserve University, and has been used to stabilize carbocations and hypercoordinated carbonium This ion is then deprotonated, explaining the hydrogen exchange, or loses a hydrogen molecule to form – the carbonium ion. wikipedia.org
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格罗布断裂反应
常见的 E-a 部分如碳𬭩离子（carbonium ion）、酰基正离子。 b-c 部分如烯、炔、亚胺。 N 如对甲苯磺酸根离子、氢氧根离子。 此类反应早在18世纪已有报道。20世纪50年代时，格罗布对这类反应进行了非常细致的研究和总结，反应也因此得名格罗布反应。 wikipedia.org
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Carbocation
ions or carbenium and carbonium ions. One textbook retains the older name of carbonium ion for carbenium ion to this day, and uses the phrase hypervalent carbonium ion for . wikipedia.org
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