2,2'-ビキノリン

外観

白色～わずかにうすい褐色, 結晶～結晶性粉末

溶解性

水に不溶, 有機溶剤に可溶。エタノールに溶け、水にほとんど溶けない。

用途

銅(I)と反応して紫色を呈するので銅(I)の比色定量試薬として用いられる。限界濃度0.01ppm, 定量範囲0.1～10ppm。

化学的特性

SLIGHTLY YELLOW TO LIGHT BEIGE SHINY FLAKES

使用

2,2'-Biquinoline is used as a reagent for spectrophotometric determination of Cu and as an indicator for titration of organolithium reagents, giving yellow-green charge-transfer complexes.

主な応用

2,2'-Biquinoline, also known as cuprous reagent, reacts with monovalent cupric ion to give a purple color. It is a highly selective reagent for the determination of cuprous. It can be utilized as a ligand in the synthesis of heteroleptic Cu(I) complexes for light-emitting diodes(LED) and cationic iridium(III) complexes as phosphorescent dyes for live-cell imaging.

一般的な説明

2,2′-Biquinoline is a white crystalline solid and it melts at 176°C. It is insoluble in water, but is soluble in ethyl, amyl and isoamyl alcohol, isoamyl acetate, dimethylformamide, acetic acid, acetonitrile and carbon tetrachloride.

純化方法

Decolourise 2,2'-biquinolyl in CHCl3 solution (charcoal), then crystallise it to constant melting point from EtOH or pet ether [Cumper et al. J Chem Soc 1188 1962]. [Beilstein 23/10 V 8.]