PROTONATION AND COMPLEX-FORMATION CONSTANTS OF 3-AMINO-1,2,4-TRIAZOLE IN NACL AND CACL2 MEDIA AT DIFFERENT TEMPERATURES AND IONIC STRENGTHS

被引：11

作者：

ABATE, L ^{[1
]}

MAGGIORE, R ^{[1
]}

RIGANO, C ^{[1
]}

DESTEFANO, C ^{[1
]}

机构：

[1] UNIV MESSINA,IST CHIM ANALIT,I-98166 MESSINA,ITALY

来源：

TALANTA | 1991年 / 38卷 / 04期

关键词：

D O I：

10.1016/0039-9140(91)80085-E

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The protonation of 3-amino-1,2,4-triazole was studied potentiometrically (glass electrode) in sodium chloride and calcium chloride solutions, 0.13 less-than-or-equal-to I less-than-or-equal-to 0.92M, at 10, 25,37 and 45-degrees. The effect of the background electrolyte on the protonation constants is explained by a complex formation model. The species CaL+, CaHL2+ and H2LCl (HL = 3-amino-1,2,4-triazole) are proposed. Stability constants, together with their dependence on temperature (DELTA-H-degrees) and on ionic strength, are reported for the protonated and complex species.

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页码：449 / 453

页数：5

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