Solvothermal synthesis, crystal structure and properties of a novel 1-D organic amine templated holmium sulfate

The first organic amine templated 1-D holmium sulfate [C6N4H22]1.5[Ho2(SO4)6 · H2O] 1 has been synthesized solvothermally and structurally characterized by single-crystal X-ray diffraction, powder XRD, IR, TGA and ICP. The structure of framework compound 1 is constructed from the [–Ho–O–S–O–]n chains. Two types of [–Ho–O–S–O–]n chains connect each other by sharing the bridging View the MathML sourceSO42- groups to generate a Ho–O–S ladder, while the adjacent ladders are connected by μ3-O atoms to form a novel triple ladders. The fully protonated triethylenetetraamine molecules are situated between the ladders, and involved in the hydrogen bonding with oxygen atoms of inorganic framework.