New chelating reagents for the separation of metal complexes by high performance liquid chromatography

New chelating reagents for the complexation of metal ions in aqueous samples have been developed. The reagents synthesized and tested were 2,6-diacetylpyridine bis(N-methylenepyridiniohydrazone) dichloride (abbreviated H{sub 2}dapmp), 2,6-diacetylpyridine bis(N-methylene-N,N,N-trimethylammonio-hydra...

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Bibliographic Details
Main Author: Main, M.V.
Language:unknown
Published: 2022
Subjects:
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHELATING AGENTS
LIQUID COLUMN CHROMATOGRAPHY
COMPLEXES
RARE EARTH COMPLEXES
CARBAZONES
CHEMICAL PREPARATION
HYDRAZONES
PYRIDINES
SEPARATION PROCESSES
AZINES
CARBONIC ACID DERIVATIVES
CHROMATOGRAPHY
HETEROCYCLIC COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
SYNTHESIS
Carbonic acid
Online Access:http://www.osti.gov/servlets/purl/6825817
https://www.osti.gov/biblio/6825817
https://doi.org/10.2172/6825817
Description
Summary:New chelating reagents for the complexation of metal ions in aqueous samples have been developed. The reagents synthesized and tested were 2,6-diacetylpyridine bis(N-methylenepyridiniohydrazone) dichloride (abbreviated H{sub 2}dapmp), 2,6-diacetylpyridine bis(N-methylene-N,N,N-trimethylammonio-hydrazone) dichloride (abbreviated H{sub 2}dapmta), and 2-acetylpyridine-4-ethyl-3-thiosemicarbazone (abbreviated Hapet). All three chelating reagents proved to be useful for the separation and determination of metal ions by reverse-phase high performance liquid chromatography. Both H{sub 2}dapmp and H{sub 2}dapmta formed kinetically stable metal complexes that did not dissociate on the chromatographic column.

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