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A PHYSICO-CHEMICAL STUDY OF THE COPPER(II) CHELATES OF 3-HYDROXYPHENYLRODANINE. ITS MIXED-LIGAND CHELATE FORMATION AND CONVERSION INTO A COPPER(II) DITHIOCARBAMATE CHELATE

DOI: 10.1039/DT9800002517

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2517 - 2521 (1980)

Update date:2022-07-30

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Authors:

Tirant, SelwynTirant, Selwyn

Smith, Thomas D.Smith, Thomas D.

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Article abstract of DOI:10.1039/DT9800002517

The highly coloured copper(II) chelates of 3-hydroxyphenylrhodanine <3-(3-hydroxyphenyl)-2-thioxo-1,3-thiazolidin-4-one> and (4,5-dibromo-3-hydroxyphenyl)rhodanine have been prepared and characterised by elemental analysis, i.r. spectroscopy, and magnetic susceptibility measurements.The 3-hydroxyphenylrhodanine chelate has been shown to be useful in the sensitive spectrophotometric determination of copper(II).E.s.r. measurements show that the chelate forms a tetrapyridine solvate in pyridine solution.Mixed-ligand chelates consisting of copper(II) and 3-hydroxyphenylrhodanine and an amino-acid such as threonine, or a polyaminocarboxylicacid such as ethylenediaminetetra-acetic acid, have also been prepared and characterised.Dissolution of these copper(II) chelates of rhodanine in chloroform leads to the formation of the dithiocarbamate chelates bis(N-chloroacetyl-N-3-hydroxyphenyldithiocarbamato)copper(II) and bis(N-chloroacetyl-N-4,5-dibromo-3-hydroxyphenyldithiocarbamato)copper(II).

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