Confirming the Molecular Basis of the Solvent Extraction of Cadmium(II) Using 2-Pyridyl Oximes through a Synthetic Inorganic Chemistry Approach and a Proposal for More Efficient Extractants.

The present work describes the reactions of CdI with 2-pyridyl aldoxime (2paoH), 3-pyridyl aldoxime (3paoH), 4-pyridyl aldoxime (4paoH), 2-6-diacetylpyridine dioxime (dapdoH) and 2,6-pyridyl diamidoxime (LH). The primary goal was to contribute to understanding the molecular basis of the very good liquid extraction ability of 2-pyridyl ketoximes with long aliphatic chains towards toxic Cd(II) and the inability of their 4-pyridyl isomers for this extraction. Our systematic investigation provided access to coordination complexes [CdI(2paoH)] (), {[CdI(3paoH)]} (), {[CdI(4paoH)]} () and [CdI(dapdoH] ().

2-Pyrrolyloximes in high-nuclearity transition-metal cluster chemistry: Fe10 and Fe12.

The employment of 2-pyrrolyloximes in high-nuclearity transition-metal cluster chemistry has provided access to unprecedented decanuclear and dodecanuclear Fe(III) cagelike clusters bearing the anion of pyrrole-2-carboxaldehyde oxime (praoH(2)), the simplest member of this new family of ligands; the identity of the products depends on the nature of the counteranion present in the starting materials.