The title compound, [Mn(salen)(salicyl)].1.5H(2)O ( H(2)salen = N, N'-ethylenebis(salicylideneaminato), Hsalicyl = salicylaldehyde), has been obtained from the reaction system containing (o-HOC6H4CH=NCH2)(2), o-HOC6H4CHO and Mn(ClO4)(2).6H(2)O in EtOH solvent and structurally characterized. It crystallizes in the monoclinic, space group P2(1)/c with a = 13.0548(4), b = 13.9254(4), c = 11.6630(1) Angstrom, beta = 105.199(2)degrees, V=21046.09(9) Angstrom(3), Z = 4, C23H22MnN2O5.5, M-r = 469.37, D-c = 1.524 g/cm(3), F(000) = 972, mu = 0.687mm(-1). R = 0.0630 and wR = 0.1142 for 1901 observed reflections with I >2sigma (I). The Mn(III) is coordinated by N(1), N(2), O(1) and O(2) of the Schiff base ligand and phenolate 0 atom of salicylaldehyde with O(3)-Mn distance of 2.050(4) Angstrom, forming a relatively rare five-coordinate square-pyramidal structure.