Crystal structure of bis(2-(4-pyridyl)-4,4,5,5-tetramethylimidazoline- 1-oxyl-3-oxide)bis(2,4-pentanedionato)cobalt(II), Co(C12H16N3O2)2(C5H7O2)2 - Wang Ying-Ji; Zhu Da-Ling (Zeitschrift für Kristallographie - New Crystal Structures, 2008)