Thermal stability and bonding in the silver complexes of ethylenediaminetetraacetic acid

被引：17

作者：

Fiorucci, AR ^{[1
]}

Saran, LM ^{[1
]}

Cavalheiro, ÉTG ^{[1
]}

Neves, EA ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Quim, BR-13565905 Sao Carlos, SP, Brazil

来源：

THERMOCHIMICA ACTA | 2000年 / 356卷 / 1-2期

关键词：

silver-EDTA complexes; photothermography; termogravimetry; differential scanning calorimetry; ethylenediaminetetraacetic acid;

D O I：

10.1016/S0040-6031(00)00478-0

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The solid silver-EDTA complexes AgH3Y .(3/4)H2O; Ag2H2Y; Ag3HY and Ag4Y .(1/2)H2O (Y-4 is ethylenediaminetetraacetate anion) obtained by reaction of the Ag+ ions with sodium salts of EDTA in different degrees of neutralization in aqueous media have been characterized by means of potentiometric titrations, IR spectrometry, elemental analysis and powder X-ray diffraction (XRD). Thermogravimetry (TG) and Differential Scanning Calorimetry (DSC) were used to investigated the thermal stability of the complexes as well as the decomposition pathways. The thermoanalytical results associated with infrared data lead to the conclusion that the silver-carboxylate group bonding is primarily ionic. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：71 / 78

页数：8

共 35 条

[1]

[Anonymous], 1972, INT SERIES MONOGRAPH, DOI DOI 10.1016/C2013-0-02416-4

[2]

BELLAMY LJ, 1975, INFRARED SPECTRA COM, V288, P183

[3] STUDIES ON EDTA COMPLEXES .8. THERMAL BEHAVIOUR IN AIR AND IN NITROGEN ATMOSPHERE OF SOME METAL-EDTA COMPLEXES [J].

BHAT, TR ;

IYER, RK .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1967, 29 (01) :179-&

[4]

Chadakowki A. M., 1964, FARM POLSKA, V20, P37

[5] THE INFRARED SPECTRA OF ETHYLENEDIAMINETETRA-ACETIC ACID AND ITS DI-SODIUM AND TETRA-SODIUM SALTS [J].

CHAPMAN, D .

JOURNAL OF THE CHEMICAL SOCIETY, 1955, :1766-1769

[6]

CHAPMAN DD, 1987, COMPREHENSIVE COORDI, V6, P118

[7] THERMAL PROPERTIES OF SOME SOLID NEODYMIUM COMPLEXES DERIVED FROM ETHYLENEDIAMINETETRAACETIC ACID [J].

CHARLES, RG .

JOURNAL OF INORGANIC & NUCLEAR CHEMISTRY, 1966, 28 (02) :407-&

[8]

COTRAIT M, 1966, B SOC CHIM FR, P114

[9]

DJINIADHIS G, 1971, CHEM ANAL, V53, P31

[10]

EBERSON L, 1969, CHEM CARBOXYLIC ACID, P53

← 1 2 3 4 →