A complex [Mn (2,4-DAA)(2) (4,4'-bipy)](n) with 2,4-dichlorophenoxy acetic acid and 4,4'-bipy has been synthesized and characterized. It crystallizes in the monoclinic space group C2/c with a=2.307 8(6) nm, b=1.164 3(3) nm, c=0.970 9(3) nm, beta=96.249(5)degrees, V=2.593 2(12) nm(3), D-c=1.668 g.cm(-3), Z=4, F(000)=1 316, Final GooF=1.032, R-1=0.046 1, wR(2)=0.110 2. The crystal structure shows that the complex forms a 2D layer structure by bi-dentate bridging 2,4-dichlorophenoxy acetic acid groups and 4,4'-bipy molecules. The manganese (II) ion is coordinated with four oxygen atoms from four ...