Ligands with the “ONNN” Group as Chelating and Preconcentrating Substances of Heavy Metal Ions: Aroylhydrazone Derivatives from Di-2-Pyridyl Ketone-Reference-Cited by-同舟云学术

Ligands with the “ONNN” Group as Chelating and Preconcentrating Substances of Heavy Metal Ions: Aroylhydrazone Derivatives from Di-2-Pyridyl Ketone

Published:1986-09 Issue:7 Volume:40 Page:1058-1062
ISSN:0003-7028
Container-title:Applied Spectroscopy
language:en
Short-container-title:Appl Spectrosc

Author:

Garcia-Vargas M.¹,Belizón M.¹,Hernández-Artiga M. P.¹,Martinez C.¹,Pérez-Bustamante J. A.¹

Affiliation:

1. Department of Analytical Chemistry, Faculty of Sciences, University of Cádiz, Puerto Real, Cádiz, Spain

Abstract

The synthesis of the electronic and infrared spectra of di-2-pyridyl ketone salicyloylhydrazone (DPKSH) and di-2-pyridyl ketone benzoylhy-drazone (DPKBH) is reported. Ultraviolet absorption spectra have been applied for determining the dissociation constants: DPKSH, pK1 = 3.5 and pK2 = 6.85; DPKBH, pK1 = 2.75 and pK2 = 10.6. These pK a values are interpreted as a function of the ortho-position of the OH group. Chelating properties of both tridentate ligands have been investigated. DPKSH forms a larger number of metal chelates in acidic media than does DPKBH. Also, it is concluded that DPKSH is a more suitable compound than DPKBH to preconcentrate and to determine heavy metal ion traces as it is inferred from the data obtained by flame AAS.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

Link

http://journals.sagepub.com/doi/pdf/10.1366/0003702864507927

Reference25 articles.

1. Synthesis and structural studies of some first row transition metal complexes of acetone nicotinoyl hydrazone

2. Acetone picolinoyl hydrazone complexes of some first row transition metal ions

3. Synthesis and structural studies of some first row transition metal complexes of acetone isonicotinoyl hydrazone

4. Salicylaldehyde salicylhydrazone complexes of some transition metal ions

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