Synthesis, crystal structures and magnetic properties of transition metal dicyanamide complexes coordinated with pyridyl nitronyl nitroxides

摘要: Two novel complexes Ni(NITpPy)2[N(CN)2]2 · 2H2O (I) and Zn(NITpPy)2[N(CN)2]2 (II) (NITpPy = 2-(p-pyridyl)-4,4,5,5- tetramethylimidazoline-1-oxyl-3-oxide) were synthesized characterized by infrared spectra, elemental analyses, UV-Vis techniques. The crystal structures of both have been determined X-ray diffraction analysis. Both are centrosymmetric distorted octahedral co-ordination geometry in which metal ions bound to two dicyanamide anions, water molecules, radicals through the nitrogen atom pyridine rings show one-dimensional chain structure via hydrogen bonds. magnetic properties I II investigated temperature range 5–300 K discussed detail. compounds exhibit weak intermolecular antiferromagnetic interaction. In complex II, diamagnetic zinc just plays role a bridge.