• YIN ZHOU

      Articles written in Journal of Chemical Sciences

    • Polynuclear and one-dimensional cyanide-bridged heterobimetallic complexes: synthesis, crystal structures and magnetic properties

      JINGWEN SHI WENLONG LAN YIN ZHOU CHONGCHONG XUE QINGYUN LIU DAOPENG ZHANG

      More Details Abstract Fulltext PDF

      Three new heterobimetallic cyanide-bridged complexes, {[Ni(L1)][Ag(CN)2]}[Ag(CN)2] ·2H2O (2), {[Mn(L1)][Ag(CN)2]} · 1.5H2O (3) and {[Mn(L3)(H2O)]2[Ag(CN)2]}ClO4 · 2H2O (4) (L1 =2,7,12-trimethyl-3,7,11,17-tetraazabicyclo[11.3.1]heptadeca-1(17),13,15-triene; L2 = N,N’-1,3-propylenebis(5-chlorosalicylideneiminate); L3 = N,N’-1,2-propylene-bis(5-bromosalicylideneiminate)), have been assembled using for the first time a new polyaza macrocycle nickel(II) compound [Ni(L1)](ClO4)2(1), or Schiff-base manganese(III) compounds and K[Ag(CN)2]. Single crystal X-ray diffraction analysis reveals that complexes 2 and 3 can be characterized as one-dimensional cationic and neutral single chain structure, respectively. Complex 3 forms a three-dimensional network via weak inter-chainAg…Aginteractions. Complex 4 belongs to a cyanide-bridged bimetallic sandwich-like cationic trinuclear structure containing Mn2Ag core with free ClO-4 as a counter anion, indicating that the Schiff-base ligand has an obvious influence on the structure of the cyanide-bridged complexes formed. Investigation of the magnetic susceptibilities of the cyanide-bridged Ag-Ni(II)/Mn(III) complexes showed the weak anti-ferromagnetic interaction between neighboring paramagnetic Ni(II) or Mn(III) ions bridged by the long NC-Ag-CN unit. From the best-fit of the magnetic susceptibility data of complexes 2 and 4 the magnetic coupling constant was determined to be J = −0.51 and −0.78 cm-1,respectively.

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