1-AMINO-4-ARYL-2(1H)-PYRIMIDINETHIONES - ACIDITY AND COMPLEX-FORMATION WITH NONFERROUS METAL-IONS AND AG(I)

被引：0

作者：

SCHMIDT, S

DIETZE, F

HOYER, E

ZAHN, G

LIEBSCHER, J

RIEMER, B

机构：

[1] TECH UNIV DRESDEN,FACHBEREICH PHYS,O-8027 DRESDEN,GERMANY

[2] HUMBOLDT UNIV BERLIN,FACHBEREICH CHEM,O-1086 BERLIN,GERMANY

来源：

JOURNAL FUR PRAKTISCHE CHEMIE-CHEMIKER-ZEITUNG | 1994年 / 336卷 / 06期

关键词：

D O I：

10.1002/prac.19943360604

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Acid dissociation constants of new 2, 3 and already known 1 substituted 1-amino-4-aryl-2(1H)-pyrimidinethiones and stability constants of their nonferrous metal ion and silver complexes have been measured ph-potentiometrically in a 75 % (v/v) mixture of dioxane/water. The influence of the substituents on pK(a)- and Igbeta(n)-values is discussed. The X-ray structure analysis of bis[1-(4-toluenesulfonamido)-4-(4-tolyl)-2(1H)-pyrimidinethionatol]-nickel(II) 5 proves that pyrimidinethiones coordinate via their thione sulphur and amino-nitrogen. However, the bond lengths are not levelled in the chelating ring.

引用

页码：500 / 505

页数：6

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