| 翻訳と辞書 |
| croconate violet ： ウィキペディア英語版 |
croconate violet
Croconate violet or 1,3-bis(dicyanomethylene)croconate is a divalent anion with chemical formula or ((N≡C-)2C=)2(C5O3)2−. It is one of the pseudo-oxocarbon anions, as it can be described as a derivative of the croconate oxocarbon anion through the replacement of two oxygen atoms by dicyanomethylene groups =C(-C≡N)2. Its systematic name is 3,5-bis(dicyanomethylene)-1,2,4-trionate. The term croconate violet as a dye name specifically refers to the dipotassium salt .
==History and synthesis==
The anion was synthesized and characterized by A. Fatiadi in 1978. He obtained the potassium salt by treating dipotassium croconate with malononitrile in water solution at 80–90 °C.〔
Alexander J. Fatiadi (1978), ''Synthesis of 1,3-(dicyanomethylene)croconate salts. New bond-delocalized dianion, "Croconate Violet"''. Journal of the American Chemical Society, volume 100 issue 8, pages 2586–2587.
〕 The dipotassium salt crystallizes from water as a dihydrate in deep blue metallic needles. The water solutions have an intense violet color and strongly stain the skin.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「croconate violet」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|