Tuning the oxidation state and magnetic and coordination behaviour of iron and cobalt complexes by O/S variation in mono-thio and dithio-oxamide chelating ligands
作者:Luca Pilia、Davide Espa、Giorgio Concas、Francesco Congiu、Luciano Marchiò、M. Laura Mercuri、Angela Serpe、Paola Deplano
DOI:10.1039/c5nj00425j
日期:——
affords [FeII(Me2pipdt)3]2+ which is isolated as a tetrafluoroborate salt (5). The same cation is found in the polyiodide salt [FeII(Me2pipdt)3](I3)1.8(I)0.2 (6) obtained by reacting iron-metal powders with Me2pipdt and I2 mixtures. Through a similar reaction by using cobalt-metal powders, [CoIII(Me2pipdt)3]2(I3)2(I)4·2I2 (7) is obtained. Structural results show that in all these compounds the metal ions
New sulfur-oxygen mixed-donor ligand N,N'-dimethyl-piperazine-3-oxo-2-thione (Me2pipto) and its Ni(ii) and Fe(ii) complexes
作者:Luca Pilia、Flavia Artizzu、Davide Espa、Luciano Marchiò、Maria Laura Mercuri、Angela Serpe、Paola Deplano
DOI:10.1039/c0dt00803f
日期:——
sulfur-oxygen donor ligand Me2pipto (1), are discussed in comparison with those of the corresponding dithione ligand Me2pipdt. A tuning of the electronic and coordination properties of the ligand, relatable to the soft/hard power of the donor atoms, is achieved. Coordination properties have been checked towards Ni(II) and Fe(III) cations obtaining [Ni(Me2pipto)3](BF4)2 (2) and [Fe(Me2pipto)3](BF4)2 (4)