The non-coordinating anion 1,1,3,3-tetracyano-2-propoxy-propenide as an anion-pi donor in cis-diaquabis(2,2 '-dipyridylamine)zinc and its cadmium analog: Luminescence properties, Hirshfeld analysis and central-atom induced polymorphism

PolynitrileCrystal structureAnion-pi interactionLuminescenceHirshfeld surface