Two Complexes from One Reaction of Nickel(II) Ion with a New Schiff Base Ligand
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A new Schiff base ligand of 1-(2, 6-dichlorobenzylidene)-4-phenylthiosemicarbazide(C14H11Cl2N3S) has been synthesized, which crystallizes in monoclinic, space group C2/c with a = 18.551(7) Å, b = 6.963(3) Å, c = 23.185(9) Å and β = 93.122(6)º. The reaction of this ligand with NiAc2·4H2O gives two different Ni(II) complexes, one is general traditional mononuclear and another is unexpected trinuclear, where another quadridentate ligand of 1-(amino-N-phenylmethanethio)-4-phenyl-thiosemicarbazide(C14H14N4S2) is found. The mononuclear complex (C32H26Cl4N8NiS2) crystallizes in triclinic, space group P−1 with a = 11.071(2) Å, b = 11.157(2) Å, c = 15.302(3) Å, α = 76.214(2)º, β = 87.902(2)º and γ = 79.586(3)º. The trinuclear complex (C60H50Cl4N16Ni3S6) crystallizes in orthorhombic, space group Pbcn with a = 19.673(3) Å, b = 16.094(3) Å and c = 20.465(4) Å. In above three compounds, there are some hydrogen bonds which help to construct the three dimensional net works and stabilize the molecular structures.