Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

In recent years, many synthetic strategies have emerged with regard to the crystal engineering of functional magnetic materials. The group of J.L. Manson et al. were able to grow single crystals of a quasi-2D antiferromagnet Cu(pyz)₂(HF₂)]SbF₆ and a defective polymorphic pendant [Cu₂(pyz)₄F(HF)(HF₂)₂ where 50% of the HF₂ ^- links are broken, leading to two crystallographically unique Cu²⁺ sites. The chemical composition remains unchanged, the structural configuration indicates a minor Jahn-Teller distortion. We studied the two branches of this compound by means of magnetization and specific heat measurements, in order to get a better understanding of the importance of H-F hydrogen bonds for establishing long-range magnetic ordering in polymeric quantum magnets.