The influence of chelate and mini-chelate effects on sulfate binding was explored for six amide-, amide/amine-, urea-, and urea/amine-based ligands. Two of the urea-based hosts were selective for SO4(2-) in water-mixed DMSO-d6 systems. Results indicated that the mini-chelate effect provided by a single urea group with two NH binding sites appears to provide enhanced binding over two amide group...

Stabilising C–Cl(lone-pair)⋯π(chelate ring) interactions are described.

A survey of delocalised C–I??(chelate ring) interactions is presented.

Competitive immunoassays for Cd(II), Co(II), Pb(II) and U(VI) were developed using identical reagents in two different assay formats, a competitive microwell format and an immunosensor format with the KinExA 3000. Four different monoclonal antibodies specific for complexes of EDTA-Cd(II), DTPA-Co(II), 2,9-dicarboxyl-1,10-phenanthroline-U(VI), or cyclohexyl-DTPA-Pb(II) were incubated with the ap...

A quinoline sensitizer-centered lanthanide chelate system of novel design for TR-LRET was prepared; it exhibited high labelling efficiency with a his-tagged protein (ERalpha-LBD) on the Ni-NTA beads, using a mixed metal chelate protocol, and it functioned well in TR-LRET protein-protein interaction assays.