Crystal structure of the Ba<sup>II</sup>-based Co<sup>II</sup>-containing one-dimensional coordination polymer poly[[aqua{μ<sub>4</sub>-2,2′-[(4,10-dimethyl-1,4,7,10-tetraazacyclododecane-1,7-diyl)bis(methylidene)]bis(4-oxo-4<i>H</i>-pyran-3-olato)}perchloratocobaltbarium] perchlorate]
Acta crystallographica. Section E, Crystallographic communications