Synthesis,crystal structures,and fluorescence properties of transition metal complexes derived from an unsymmetrical N-heterocyclic ligand |
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| Abstract: | Four transition metal complexes, Mn(Hbimtz)2(H2O)2(NCS)2] (1), Co(Hbimtz)2(H2O)2(NCS)2] (2), Pb(Hbimtz)Br2] n (3), and {Ag2(Hbimtz)3]SO4?·?4H2O} n (4) (Hbimtz?=?1-(1H-benzimidazol-2-yl)-methyl]-1,2,3,4-tetrazole), were synthesized and characterized by single-crystal X-ray diffraction. The Mn(II) of 1 and Co(II) of 2 are six-coordinate with two nitrogen atoms from Hbimtz, two nitrogen atoms from thiocyanate and two water molecules. The geometry of Pb(II) in 3 is a distorted octahedron with two nitrogen atoms of two Hbimtz's and four Br? ions, including the weak bond between the Pb1 and N6 of Hbimtz. Complex 3 is assembled into a 1-D PbBr2] n inorganic chain by μ 2-Br? and into a 2-D layer by weak interactions. The Ag(II) of 4 has two geometries, linear and tetrahedral. Hbimtz bridges the two kinds of Ag(II) into a 1-D helical chain. Fluorescence of 3 and 4 were also investigated. |
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| Keywords: | Crystal structure 1-[(1H-benzimidazol-2-yl)-methyl]-1 2 3 4-tetrazole Transition metal complexes Photoluminescence properties |
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