Jump to main content
Jump to site search

Issue 10, 2003
Previous Article Next Article

Tailoring hydrophilic N,N-dialkyl-N′-acylthioureas suitable for Pt(ii), Pd(ii) and Rh(iii) chloride pre-concentration from acid aqueous solutions, and their complex separation by reversed-phase HPLC

Author affiliations

Abstract

A series of new, relatively hydrophilic, N,N-dialkyl-N′-(2,2-dimethylpropyl)thioureas (HLn) (n = 1, N,N-dimethyl-; n = 2, N-pyrrolidyl-; n = 3, N-piperidyl-) and their corresponding cis-[M(Ln-S,O)2] [for M = Pt(II), Pd(II); n = 1–3] and fac-[Rh(Ln-S,O)3] (n = 2, 3) complexes have been prepared and characterised. The crystal and molecular structures of fac-tris(N-pyrrolidyl-N′-(2,2-dimethylpropyl)thioureato)rhodium(III) and cis-bis(N-piperidyl-N′-(2,2-dimethylpropyl)thioureato)platinum(II) are reported, as representative examples. The favourable physiochemical properties and ready formation of stable mono-isomeric cis-[Pt(Ln-S,O)2] and cis-[Pd(Ln-S,O)2] complexes with these ligands makes these compounds suitable for the reversed-phase high performance liquid chromatography (RP-HPLC) determination of traces of these metal ions in hydrochloric acid, following in situ complex formation in a homogeneous acetonitrile–hydrochloric acid phase and subsequent salt (NaCl) induced phase separation. A study of the effect of ligand structure on the separation behaviour of cis-[M(Ln-S,O)2] of Pd(II) and Pt(II) complexes has been undertaken, showing that the nature of the ligand has a significant influence on the separation characteristics of these complexes.

Graphical abstract: Tailoring hydrophilic N,N-dialkyl-N′-acylthioureas suitable for Pt(ii), Pd(ii) and Rh(iii) chloride pre-concentration from acid aqueous solutions, and their complex separation by reversed-phase HPLC

Back to tab navigation

Supplementary files

Article information


Submitted
29 Nov 2002
Accepted
20 Jan 2003
First published
23 Apr 2003

Dalton Trans., 2003, 1952-1960
Article type
Paper

Tailoring hydrophilic N,N-dialkyl-N′-acylthioureas suitable for Pt(II), Pd(II) and Rh(III) chloride pre-concentration from acid aqueous solutions, and their complex separation by reversed-phase HPLC

A. N. Mautjana, J. D. S. Miller, A. Gie, S. A. Bourne and K. R. Koch, Dalton Trans., 2003, 1952
DOI: 10.1039/B211885H

Social activity

Search articles by author

Spotlight

Advertisements