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Two New Isomeric Di-μ-oxo Bis[oxovanadium(V)] Complexes Containing Schiff Base Ligands

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Abstract

Two new isomeric dioxovanadium(V) complexes, [VO2L1]2 (1) and [VO2L2]2 (2), bearing the tridentate Schiff base ligands 2-[(2-ethylaminoethylimino)methyl]-6-methoxyphenolate (L1) and 2-[(2-ethylaminoethylimino)methyl]-5-methoxyphenolate (L2), have been synthesized and characterized by IR spectroscopy and elemental analysis. The X-ray single-crystal structural analysis indicates that the structure of 1 crystallizes to a monoclinic system, with a space group P21/c, a = 6.915(2) Å, b = 9.666(3) Å, c = 20.156(3) Å, β = 97.540(3)°, and Z = 2. The structure of 2 crystallizes to a triclinic system, with a space group P−1, a = 6.747(5) Å, b = 11.320(8) Å, c = 17.790(13) Å, α = 98.060(6)°, β = 99.244(7)°, γ = 92.730(7)°, and Z = 2. Each V atom in the centrosymmetric complexes is six-coordinate through three bonds to oxo groups and through bonds to the tridentate Schiff base ligand, forming an octahedral coordination.

Graphical Abstract

Two new isomeric dioxovanadium(V) complexes have been synthesized and characterized.

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Acknowledgments

This work was supported by the Key Scientific and Technological Project of Henan (112102310562), the Fundamental and Frontier Technology Program of Henan (082300420200), the Foundation of Henan Educational Committee (2011B150040), the Scientific Research Innovation Foundation for youth teachers of Zhoukou Normal University (zknuqn201129B), the Foundation for University Key Teacher by Henan Educational Committee (2010GGJS-157), and the NSF of Henan Educational Committee (2011B150028).

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Authors and Affiliations

  1. Department of Chemistry, Zhoukou Normal University, Henan, 466000, People’s Republic of China

    Shu-Jing Li, Ke Li & Xin-Jian Yao

  2. Department of Chemistry, Shangqiu Normal University, Shangqiu, 476000, People’s Republic of China

    Xiao-Yang Qiu

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  1. Shu-Jing Li
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  2. Ke Li
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  3. Xiao-Yang Qiu
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Correspondence to Shu-Jing Li or Xiao-Yang Qiu.

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Li, SJ., Li, K., Qiu, XY. et al. Two New Isomeric Di-μ-oxo Bis[oxovanadium(V)] Complexes Containing Schiff Base Ligands. J Chem Crystallogr 42, 879–883 (2012). https://doi.org/10.1007/s10870-012-0330-9

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