A new series of manganese(II) complexes , [Mn(L333)](ClO4)2, 1, [Mn(L332)](ClO42, 2 and [Mn(L322)](ClO4)2, 3, having the Schiff base ligands L333 = {[N(CH2CH2CH2N=CH(C5H4N))3]}, L332 = {[N(CH2CH2CH2N=CH-(C5H4N))2(CH2CH2=NCH(C5H4N)]},) L322 = {[N(CH2CH2CH2N=CH(C5H4N)(CH2CH2=NCH(C5H4N))2]}, respectively, were synthesized. The above complexes are products of the template condensation of 2-pyridinecarboxaldehyde and tris(3-aminopropyl)amine, tpt, bis(3-aminopropyl)(2-aminoethyl)amine, ppe, and (3-aminopropyl)-bis(2-aminoethyl)amine, pee, respectively, in the presence of Mn(II) ions. All complexes were characterized by X-ray diffraction, elemental analysis and FT-IR spectroscopy. X-ray crystal structure analysis of the above complexes shows that in all complexes the Mn(II) ion exhibits a mono-capped distorted trigonal antiprism geometry.