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Em química, um composto quaternário é um í … Em química, um composto quaternário é um íon que consiste numa carga positiva do átomo central com quatro substituintes, especialmente grupos orgânicos (alquila e arila), tirando os átomos de hidrogénio. Outros exemplos incluem os substituintes R4P+, R4As+ como , bem como alguns arsénios contendo supercondutores. Os substituintes R4Sb+ e R4Bi+ também têm sido descritos.s R4Sb+ e R4Bi+ também têm sido descritos.
, In chemistry, a quaternary compound is a c … In chemistry, a quaternary compound is a compound consisting of exactly four chemical elements. In another use of the term in organic chemistry, a quaternary compound is or has a cation consisting of a central positively charged atom with four substituents, especially organic (alkyl and aryl) groups, discounting hydrogen atoms. The best-known quaternary compounds are quaternary ammonium salts, having a nitrogen atom at the centre. For example, in the following reaction, the nitrogen atom is said to be quaternized as it has gone from 3 to 4 substituents: Other examples include substituted phosphonium salts (R4P+), substituted arsonium salts (R4As+) like arsenobetaine, as well as some arsenic-containing superconductors. Substituted (R4Sb+) and (R4Bi+) have also been described.Sb+) and (R4Bi+) have also been described.
, En chimie, un composé quaternaire est un c … En chimie, un composé quaternaire est un cation constitué d'un atome central de pnictogène chargé positivement, entouré de quatre substituants, en particulier des groupes organiques (alkyle, aryle), en ne comptant pas les atomes d'hydrogène. Les composés quaternaires les plus connus sous les ammoniums quaternaires, dont l'atome central est l'azote . Par exemple, dans la réaction ci-dessous, l'atome d'azote est dit « quaternisé » en passant de trois à quatre substituants : D'autres exemples incluent les sels de phosphonium (R4P+), les substitués (R4As+) tels que l'arsénobétaïne, ou certains supraconducteurs contenant de l'arsenic. Certains sels de (R4Sb+) et de (R4Bi+) ont aussi été décrits.4Sb+) et de (R4Bi+) ont aussi été décrits.
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En chimie, un composé quaternaire est un c … En chimie, un composé quaternaire est un cation constitué d'un atome central de pnictogène chargé positivement, entouré de quatre substituants, en particulier des groupes organiques (alkyle, aryle), en ne comptant pas les atomes d'hydrogène. Les composés quaternaires les plus connus sous les ammoniums quaternaires, dont l'atome central est l'azote . Par exemple, dans la réaction ci-dessous, l'atome d'azote est dit « quaternisé » en passant de trois à quatre substituants :n passant de trois à quatre substituants :
, Em química, um composto quaternário é um í … Em química, um composto quaternário é um íon que consiste numa carga positiva do átomo central com quatro substituintes, especialmente grupos orgânicos (alquila e arila), tirando os átomos de hidrogénio. Outros exemplos incluem os substituintes R4P+, R4As+ como , bem como alguns arsénios contendo supercondutores. Os substituintes R4Sb+ e R4Bi+ também têm sido descritos.s R4Sb+ e R4Bi+ também têm sido descritos.
, In chemistry, a quaternary compound is a c … In chemistry, a quaternary compound is a compound consisting of exactly four chemical elements. In another use of the term in organic chemistry, a quaternary compound is or has a cation consisting of a central positively charged atom with four substituents, especially organic (alkyl and aryl) groups, discounting hydrogen atoms. The best-known quaternary compounds are quaternary ammonium salts, having a nitrogen atom at the centre. For example, in the following reaction, the nitrogen atom is said to be quaternized as it has gone from 3 to 4 substituents:d as it has gone from 3 to 4 substituents:
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Quaternary compound
, Composé quaternaire
, Composto quaternário
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