| 释义 |
-ir- Chem.
[See quot.]
A formative element in the names of three-membered heterocyclic ring systems. A systematic nomenclature is generated by appending to -ir- a prefix (or prefixes) representing the hetero-atom(s), and one of the suffixes -ane 2, -ene, -idine c, or -ine5, to indicate saturation or unsaturation and the presence or absence of a nitrogen atom in the ring. (Cf. -irane, -irene, -iridine, -irine.)
1928A. M. Patterson in Jrnl. Amer. Chem. Soc. L. 3079 With a precedent already set for et (four members, compare ‘tetra’) and with ol (five members) and in (six members) already confirmed by usage, it would only be necessary to supply three syllables more to cover all but rare cases. These might be ir (from ‘tri’, reversed) for three members. Ibid., Examples of the resulting names and combining forms are: oxirene, oxirane (ethylene oxide). |