Novel Co and Ni Metal Complexes and Ferromagnets by the Combination of 2-Pyridyl Oximes with Polycarboxylic Ligands.

The use of 2-pyridyl oximes in metal complexes chemistry has been extensively investigated in the last few decades as a fruitful source of species with interesting magnetic properties. In this work, the initial combination of pyridine-2-amidoxime (pyaoxH) and 2-methyl pyridyl ketoxime (mpkoH) with isonicotinic acid (HINA) and 3,5-pyrazole dicarboxylic acid (Hpdc) has provided access to three new compounds, [Ni(INA)(pyaox)(pyaoxH)(DMF)] (), [Co(mpko)(mpkoH)(OMe)(HO)](ClO) (), and [Co(OH)(Hpdc)(Hpdc)] (). displays a square-planar metal topology, being the first example that bears simultaneously HINA and pyaoxH in their neutral or ionic form.