Template synthesis, structure and magnetic property of a new open-framework manganese borophosphate: (C4N2H12)Mn[B2P3O12(OH)]

A new manganese borophosphate compound, (C4N2H12)Mn[B2P3O12(OH)], has been hydrothermally synthesized, and structurally determined by single crystal X-ray diffractions. The crystal structure of the compound is characterized by corner-sharing BO4 and PO4 groups, leading to 1-D infinite chains built from alterative tetrahedra with a sequence of two corner-sharing borate tetrahedra, whose remaining corners are shared with two loop branching phosphate groups followed by a phosphate unit, which is interconnected by MnO6 octahedral groups to construct a three-dimensional open-framework topology with unidimensional channels, which are occupied by diprotonated piperazinium ions. Magnetic measurement reveals an antiferromagnetic interaction system. Other characterizations by elemental analysis, IR and thermal analyses are also discussed.