Two mononuclear seven-coordinated macrocycle manganese(II) compounds and three dicyanide-containing precursors have been employed as building blocks to assemble cyanide-bridged heterobimetallic complexes, resulting in five new cyanide-bridged single chain complexes {[Mn(L-1) [Fe(bpb)(CN)(2)]}ClO4 center dot 0.5H(2)O (2), {[Mn(L-2)][Fe(bpb)(CN)(2)]}ClO4 center dot 0.5H(2)O (3), {[Mn(L-1)][Fe(bpClb)(CN)(2)]}ClO4 center dot H2O (4), {[Mn(L-2)][Fe(bpClb)(CN)(2)]}ClO4 center dot 0.5H(2)O (5), and ([Mn(L-1)][Fe(bpdBrb)(CN)(2)]}ClO4 center dot H2O (6). Single X-ray diffraction analysis reveals their one-dimensional (1D) single cyanide-bridged cationic or polymeric chain structure consisting of alternating units of [Mn(L)](2+)(L = L-1 or L-2) and [Fe(L')(CN)(2)](-) [L'=bpb(2-), bpClb(2-) or bpdBrb with free ClO4- as balanced anion. Similar to the mononuclear macrocyclic manganese(II) precursor Mn( (H2O)Cl]ClO4} center dot CH3OH (1), the coordination geometry of manganese(II) ion in all the 1 D complexes is a slightly distorted pentagonal-bipyrimidal with two cyanide nitrogen atoms at the trans positions and N-5 or N3O2 coordinating mode at the equatorial plane from ligand L-1 or L2. Investigation of the magnetic properties of these five 1 D single chain cyanide-bridged Fe-III-Mn-II complexes reveals the antiferromagnetic magnetic coupling between neighboring Fe(III) and Mn(II) ions through the bridging cyanide group. A best-fit to the magnetic susceptibilities of these complexes based on the 1 D alternating chain model leads to the magnetic coupling constants J(1) = -1.16(2) and J(2) = -0.10(3) cm(-1) for 2, J(1) = -3.10(1) and J(2) = -0.25(1) cm(-1) for 3, J(1) = -1.10(1) and J(2)= -0.139(8) cm(-1) for 4, J(1) = -1.99(6) and J(2)= -0.57(1) cm(-1) for 5, and J(1) = -1.23(1) and J(2)= -0.13(5)cm(-1) for 6, respectively. This work will provide valuable information for the rational design and synthesis of low-dimensional, in particular, single chain, cyanide-bridged magnetic complexes.