One novel complex [Mn(C10H9O3)(2)(4,4'-bipy)(H2O)(2)](n) with o-2-oxopropanoicbenic acid and 4,4'-bipy. has been synthesized and characterized. It crystallizes in the letragonal space group P4(3)2(1)2, with a=1.6260(3) nm, b=1.6260(3) nm, c=2.103 5(4) nm, V=5.561 4(18) nm(3), D-c=1.432 g.cm(-3), Z=8, F(000)=2488. Final GooF=1.001, R-1=0.054 7, wR(2)=0.1109. The crystal structure shows that the manganese(II) ton is coordinated with two nitrogen atoms of two 4,4'-bipy molecules and two oxygen atoms from two o-2-oxopropanoicbenic acid molecules and two water molecules, respectively, giving a dist...