Solvothermal Synthesis and Characterization of a New Titanium Phosphate with a One-Dimensional Chiral Chain

A new titanium phosphate, [Ti3P6O27]·5[NH3CH2CH2NH3]·2[H3O], denoted JTP-A (Jilin-titanium phosphate-A), has been synthesized under solvothermal conditions and its structure determined by single-crystal X-ray diffraction. It crystallizes in an enantiomorphic space group P212121 with lattice parameters a = 10.1800(6) Å, b = 15.8992(9) Å, c = 23.2271(12) Å, V = 3759(4) Å3, and Z = 4. The structure consists of one-dimensional chiral chains built up from corner-sharing titanium oxo octahedra running along the 21-screw axis, with the adjacent titanium oxo octahedra being bridged by phosphate tetrehedra. The Ti−O bond lengths along the backbone of the chain are alternately short and long. The results of TGA, IR, 31P MAS NMR, and second harmonics generation measurements are also presented.