Cu(imid)₄SO₄ - Low Dimensional S=1/2 Heisenberg Magnet

Magnetostructural correlations have been studied in the title compound at low temperatures. The investigations included the detailed study of hydrogen bond geometry, completed by thermodynamic measurements and electron paramagnetic resonance experiment. In contrast to the expectation based on structural consideration, the investigations revealed surprisingly weak magnetic correlations which can be ascribed to the non-trivial magneto chemistry of the hydrogen bonds present in the structure.