Solvothermal synthesis, crystal structure and properties of the first organic-templated holmium sulfate [C₂N₂H ₁₀]₃[Ho₂(SO₄)₆· 2H₂O]

The first organic amine-templated holmium sulfate [C₂N ₂H₁₀]₃[Ho₂(SO₄) ₆·2H₂O] (1) has been synthesized solvo-thermally and has been structurally characterized by single-crystal X-ray diffraction studies. IR spectroscopic, thermogravimetric (TG) and inductivity coupled plasma (ICP) measurements. Crystal analyses of compound 1 showed a novel inorganic layer constructed from the zigzag and helical [-Ho-O-S-O-]_n chains, both of the chains are connected by μ-2 SO₄^2- groups to form 10-membered rings. The solvent plays an important role during the formation of 1.