Investigating the role of the organic ligand on the magnetic and electronic structure of copper(II) chloride-based organic/inorganic single

The aim of this proposal is to have a complete description of the magnetic and electronic properties of 1,2,5-benzothiadole/CuCl2 ((btd)/CuCl2) and 1,2,5-benzoselenadizole/CuCl2 ((bSed)/CuCl2) single crystals organic/inorganic hybrid coordination polymers, using soft x-ray absorption spectroscopy. These are molecule-based magnetic compounds exhibiting the coexistence of different magnetic orders. The goal is to establish the relationship between antiferromagnetic (AFM) and ferromagnetic (FM) orders in these compounds probably related to the presence of helimagnet spin order as observed in full-inorganic anhydrous cupric halides parent compounds when the organic part is changed. To verify this picture, we propose to measure magnetic circular and linear dichroism at the Cu L2,3 edges on hybrid single crystals.