Cyanide-bridged manganese(II) and chloride-bridged copper(II) complexes with 2-pyridineethanol: Synthesis, structural characterization and C-H···M interactions

X-ray single crystal structure analysis reveals that the structures of 1 and 2 consist of one-dimensional infinite chains. The coordination environment of Mn(II) was identified as distorted octahedral, whereas Ni(II) has a square planar geometry in 1 .

Each Cu(II) in 2 adopts a distorted square-pyramidal geometry in which the basal plane is constructed by oxygen and nitrogen from hep and a bridging chloride and the apical position is occupied by the other chloride. The 1D chains in 1 and 2 are extended into a two-dimensional supramolecular network by O−H···N and weak C−H···Cl hydrogen bonds, respectively. Adjacent 2D layers are further connected by C−H···M interactions resulting in formation of 3D supramolecular networks.