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 SO42- 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.

Graphical abstractThe first organic amine templated 1-D holmium sulfate [C6N4H22]1.5[Ho2(SO4)6 · H2O] (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 SO42− groups to generate a Ho–O–S ladder, while the adjacent ladders are connected by μ3-O atoms to form a novel triple ladders.Figure optionsDownload full-size imageDownload as PowerPoint slide