Syntheses, Structures, and Magnetic Properties of Two Kinds of Unique Heterometallic Chains with Mixed-Bridging Ligands of Tricyanometalate and Alkoxide

The reactions of copper(II) salts, 1,3-bis(dimethylamino)-2-propanol (bdmapH) or 1,3-bis(amino)-2-propanol (bapH) and [(Tp)Fe(CN)(3)](-) (Tp = tris(pyrazolyl)hydroborate) gave four mixed-bridged heterometallic one-dimensional (1D) coordination polymers, {[(TP)(2)Fe(2)(CN)(6)(OAc)(bdmap)Cu(2)(H(2)O)]center dot 2H(2)O}(n) (1, HOAc = acetic add), {[(TP)(2)Fe(2)(CN)(6)(Pa)(bdmaP)-Cu(2)(H(2)O)]center dot 2MeCN}(n) (2, Hpa = propionic acid), {[TP)(2)Fe(2)(CN)(6)(Tfa)(bdmap)Cu(2)(H(2)O)]center dot 2MeCN}(n) (3, HTfa = trifluoroacetic acid), and {[(Tp)(2)Fe(2)(CN)(6)(OAc)(bap)Cu(2)(MeOH)]center dot 2MeOH center dot H(2)O)(n) (4). Complexes 1-3 show unique branched zigzag chain structures and complex 4 exhibits as a steplike chain. Ferromagnetic interactions between Fe(III) and Cu(II) ions by bridging cyanides are observed in all complexes. Strong antiferromagnetic interactions are presented between the Cu(II) ions in complexes 1-3, whereas similar antiferromagnetic coupling between Cu(II) ions is obviously weakened in complex 4 because of the distortion of penta-coordinated Cu(II) ions.