S.-S. Zhang, S.-Y. Niu, X. Shi, X.-M. Li, Y.-H. Wen, and K. Jiao, “Synthesis and Structure of Hexakis(Imidazole) Cobalt(II) Dichloride Monohydrate”, ajc, vol. 18, no. 3, pp. 1879–1884, Mar. 2010.