请输入您要查询的英文单词:

 

单词 phosphazine
释义

phosphazinen.

Brit. /ˈfɒsfəziːn/, U.S. /ˈfɑsfəˌzin/
Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: phospho- comb. form, azine n.
Etymology: < phospho- comb. form + azine n., after German Phosphazin (H. Staudinger & J. Meyer, in Helvetica chimica acta 2 (1919) 619).
Chemistry.
Any compound containing an azine group =N—N= bonded directly to a phosphorus atom. Cf. phosphazene n.
ΚΠ
1920 Jrnl. Chem. Soc. 118 105 Tertiary phosphines combine more or less readily with the most varied aliphatic diazo-compounds, yielding derivatives, for which the name phosphazines is proposed, in accordance with the scheme CR2:N⋮N + PR3 → R2C:N—N:PR3.
1958 J. R. Van Wazer Phosphorus & its Compounds I. vi. 341 The compound (C6H5)3PNN=C(C6H5)2, a typical phosphazine, is a yellow, stable solid with slightly basic properties.
1999 Acta Crystallographica C. 55 1017/1 The synthetic utility of phosphazines (R3P=N—N=CR2) has been recognized for many years.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
<
n.1920
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/24 12:47:16