An organically templated layered titanium phosphate, [TiOPO₄]⁻[NH₃(CH₂)₂NH₂]⁺, has been synthesised under hydrothermal conditions. The crystal structure was determined from single-crystal X-ray diffraction. The layers of the two-dimensional structure consist of infinite corner-sharing chains of TiO₅N octahedra cross linked by PO₄ tetrahedra. The bonds to oxygen along the chain of titanium octahedra alternate between a short bond (1.719(1) Å) and a long bond (2.150(1) Å). One nitrogen of the diamine is directly coordinated to titanium while the other participates in hydrogen bonding to the subsequent anionic layer. The presence of Ti^IV in the compound is consistent with bond valence analysis, the observation of diamagnetic susceptibility and sharp signals in the solid state ³¹P NMR measurements. The compound is isostructural to the ULM-11 type of Fe-, Al-, V-fluorophoshates and identical to a titanium phosphate which had been assumed to contain Ti^III.