A new terbium(III) complex Tb(C20H14O3N)(3)(C12H8N2)(H2O)center dot H2O has been synthesized with 2-diphenylanine carbonyl benzoic acid and 1,10-phenanthroline as ligands. Crystal data for the complex are as follows: triclinic, space group P (1) over bar, a =11.6034(6), b = 16.2465(8), c = 16.4427(8) angstrom, alpha = 73.168(5)degrees, beta = 88.655(4)degrees, gamma = 82.865(4)degrees, V= 2943.7(3) angstrom(3), D-c = 1.494 g/cm(3), Z = 2, mu(MoK alpha) = 1.272 mm(-1), F(000) = 1348, the final R= 0.0535 and wR = 0.0809. The Tb(III) ion is coordinated by nine atoms to give a monocapped square an...