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EPR and 13C NMR study of the [TMA]2Cu0,5Zn0,5Cl4 compound

A.Ben Rhaiem, K.Karoui, K.Guidara, M.Gargouri

The [TMA]2Cu0,5Zn0,5Cl4 compound was obtained by slow evaporation at room temperature. The sample was characterized by differential scanning calorimetry, electron paramagnetic resonance (EPR) and 13C NMR spectroscopy at different temperatures. The calorimetric study showed five endothermic peaks at 248, 271.7, 278, 286, and 293.7K. The phase transitions at 248 and 271 were detected by EPR analyses and that at 286 was observed by 13C NMR study.