X-RAY CRYSTAL-STRUCTURES AND CHEMICAL-PROPERTIES OF HETEROCYCLIC AZO-COMPOUNDS COUPLED WITH M-ALKOXYPHENOLS

被引：4
|
作者：
ISHIZUKI, T
MURAKAWA, T
YAMADA, T
YUCHI, A
WADA, H
SHIRO, M
机构：
[1] NAGOYA INST TECHNOL, DEPT APPL CHEM, SHOWA KU, NAGOYA, AICHI 466, JAPAN
[2] SHIONOGI & CO LTD, SHIONOGI RES LAB, FUKUSHIMA, OSAKA 553, JAPAN
来源：
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 1995年 / 68卷 / 08期
关键词：
D O I：
10.1246/bcsj.68.2281
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
X-Ray crystal structures have been determined for two compounds obtained by the coupling reaction of 2-pyridinediazonium salt and m-methoxyphenol, viz., 3-methoxy-4-(2-pyridylazo)phenol (1) and 5-methoxy-2-(2-pyridylazo)phenol (2). The 2-pyridylazo and 2-thiaaolylazo compounds having o-methoxy and p-hydroxy groups, such as 1, have lower pK(a) values and lower affinities for or higher selectivities to metal ions than corresponding o-hydroxy isomers. The resulting bis complexes with metal ions show molar absorptivities greater than 10(5).
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页码：2281 / 2285
页数：5
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