Synthesis and characterization of a layered chlorozincophosphate Zn(HPO4)Cl·[C4H10NO]

A chlorozincophosphate of the composition Zn(HPO4)Cl·[C4H10NO] has been synthesised under mild condition water medium in the presence of morpholine as organic template. Its unit cell is monoclinic P21/a with parameters a = 8.655(6) Å, b = 9.302(5) Å, c = 12.180(5) Å, β = 101.10(4)°, Z = 4 and V = 962.1(9) Å3. The structure was determinated by single crystal X-ray diffraction. The structure involves a network of ZnO3Cl and PO3(OH) tetrahedra forming macroanionic inorganic layers with four- and eight-membered rings. Charge balance is achieved by the protonated amine which is trapped in the interlayers space and interacts with the organic framework through hydrogen bonding. Solid state 31P and 13C MAS-NMR spectroscopies are in agreement with the X-ray structure.