Synthesis, Structures and Magnetic Properties of Cyano-bridged FeIII/MnIII Heterobimetallic 1D Chain Complexes

Using the tricyanometalate building block, (nBu(4)N)[(Tp*)Fe(CN)(3)] [Bu4N+ = tetrabutylammonium cation; Tp*(-) = hydrotris(3,5-dimethylpyrazol-1-yl)borate], and bidentate Schiff base ligands, HL1 or HL2 {HL1 = 2-[[(2-phenylethyl)imino]methyl]phenol; HL2 = 4-methoxy-2-[[(2-phenylethyl)imino]methyl]phenol}, two heterobimetallic one-dimensional (1D) chain complexes, [Mn(L1)(2)Fe(Tp*)(CN)(3)](n) (1) and [Mn(L2)(2)Fe(Tp*)(CN)(3)](n) (2), were synthesized. Single crystal X-ray diffraction reveal the formation of neutral cyano-bridged zigzag single chains in 1 and 2. Magnetic studies demonstrate that both complexes show ferromagnetic interactions between central Fe-III and Mn-III atoms.