Investigate the magnetic structure of copper(II)-based organic/inorganic hybrid coordination polymers single crystals

In this proposal we aim to study the magnetic and the electronic properties of unexplored 1,2,5-benzothiadole/CuCl2 ((btd)/CuCl2), 1,2,5-benzothiadole/CuBr2 ((btd)/CuBr2) 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. To verify this picture, we propose to measure magnetic circular and linear dichroism at the Cu L2,3 edges on hybrid single crystals.