197
Two polymorphs Ni(II) complexes containing the dicyanamide ligand: syntheses, structures and magnetic properties of {[Ni(meso-CTH)(μ1,5-dca)]ClO4}n and [Ni(meso-CTH)][Ni(meso-CTH)(dca)2](ClO4)2 (dca=dicyanamide; CTH=meso-5,5,7,12,12,14-hexamethyl-1,4,8,11