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Self-assembly and crystal structure of a three-dimensional copper(II) complex

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A copper(II) complex of a sulfonate derivative of chrysin, 5,7-bihydroxyflavone-6-sulfonate, Cu(C15H8O7S)(3H2O), has been prepared. The complex was characterized by elemental analysis, spectroscopic measurements and single-crystal X-ray diffraction studies. It crystallizes in the monoclinic space group C2/c, with a = 16.036(18), b = 6.944(8), c = 28.03(3) Å,  = 94.463(17)°, V = 3112(6) Å3, Z = 8. In the complex, Cu(II) is five-coordinate and all donors are oxygen atoms. Hydrogen bonds and - stacking interactions in the crystal lead to the formation of a three-dimensional supramolecular motif.
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Keywords: Chrysin; Copper; Crystal structure; Hydrogen bonding; - Stacking

Document Type: Research Article

Affiliations: 1: School of Chemistry and Material Science, Shaanxi Normal University, Xi'an 710062, P.R. China 2: School of Chemistry and Material Science, Shaanxi Normal University, Xi'an 710062, P.R. China,Department of Chemistry, Shaanxi University of Technology, Han'zhong 723001, P.R. China

Publication date: July 1, 2007

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