Cyanide-bridged assemblies constructed from capped tetracyanometalate building blocks [MA(ligand)(CN)4]1−/2− (MA =Fe or Cr) - Li, Yong-Hua; He, Wen-Rui; Ding, Xue-Hua; Wang, Shi; Cui, Lin-Fang; Huang, Wei (Coordination Chemistry Reviews, 2012)