| 释义 |
Definition of methide in English: methidenoun ˈmɛθʌɪdˈmiːθʌɪd Chemistry 1The methyl anion CH₃ −, originally specifically in a compound with a metal atom. Later also: any compound that contains this anion or a substituted derivative of it. 2More fully "quinone methide". A quinone derivative with a methylene group in place of one of the oxygen atoms. 3A carbide whose anion is a single carbon atom (C4−), and which gives methane on hydrolysis.
Origin Mid 19th century; earliest use found in Edward Frankland (1825–1899), chemist. From meth- + -ide. Definition of methide in US English: methidenoun Chemistry 1The methyl anion CH₃ −, originally specifically in a compound with a metal atom. Later also: any compound that contains this anion or a substituted derivative of it. 2More fully "quinone methide". A quinone derivative with a methylene group in place of one of the oxygen atoms. 3A carbide whose anion is a single carbon atom (C4−), and which gives methane on hydrolysis.
Origin Mid 19th century; earliest use found in Edward Frankland (1825–1899), chemist. From meth- + -ide. |