Self-assembly and crystal structure of a barium sulfonate chrysin coordination polymer

A novel barium coordination polymer [Ba(C15H9O7S)2]n was obtained by the self-assembly of Ba(II) with a sulfonate derivative of chrysin(5,7-bihydroxyflavone-6-sulfonate). The coordination polymer was characterized by single-crystal X-ray diffraction. Its barium(II) atom is in distorted dodecahedron environment of 10 oxygen atoms. The coordination interaction, hydrogen bond and π–π stacking lead to the formation of a 1D chain structural coordination polymer.