Hydrothermal synthesis and characterization of a Na+ templated new 3-D lanthanum sulfate Na[C6H14N2][La3(SO4)6(H2O)3] constructed from La–O–S tubes and cubic cages

A new lanthanum sulfate Na[C6H14N2][La3(SO4)6(H2O)3] 1 has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, IR and TGA. Structure analysis indicates that the structure of 1 features unusual three-dimensional inorganic framework constructed from La–O–S tubes and cubic cages. The Na+ plays an important role in the formation of 3-D open framework of 1.