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Oxidation processes in a phosphine-thiocarbohydrazone ligand
* 1 , 2 , 2 , 2 , 2
1  Suprabioin Lab, Departamento de Química Inorgánica, Facultade de Química, Campus Vida, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
2  Universidade de Santiago de Compostela
Academic Editor: Julio A. Seijas


In this work, we have isolated a pentadentate [P2N2S] phosphine-thiocarbohydrazone ligand, H2L, with a bulky phosphine group in both linker domains that undergoes an oxidation process in solution. This ligand was synthesized by direct reaction between two equivalents of 2-diphenylphosphinebenzaldehyde and one equivalent of thiocarbohydrazide. Two types of crystals derived from this ligand were obtained and studied by X-ray diffraction spectroscopy. One structure corresponds to the monooxidized ligand H2L(O) while the other indicates a dioxidation of the compound, H2L(OO).

Keywords: thiocarbohidrazone; phospine; oxidation; X-ray diffraction