This HOT article by Mukherjee et al. reports the synthesis, structure, magnetic properties and DFT studies of four Cu(II)-azide polymers. Cu(II)-azide polymers are presently being studied by many groups due to their interesting structural variation and magnetic properties. In this paper, three out of the four compounds studied are of new structural topologies. All four complexes exhibit an overall ferromagnetic behaviour; the magnetic results are corroborated by DFT studies. The structural analysis shows how a simple change in the structure of the blocking ligand can generate entirely different structures and magnetic properties, even though the basic structures seems to be almost identical. It is also shown that another blocking diamine does not produce similar complexes under the same reaction conditions, which leads to the question: are certain compositions forbidden?
Read more about forbidden compositions and magnetic behaviour for FREE until the 2nd November at:
CuII-azide polymers with various molar equivalents of blocking diamine ligands: synthesis, structures, magnetic properties with DFT studies
Sandip Mukherjee, Yogesh P. Patil and Partha Sarathi Mukherjee
Dalton Trans., 2011, Advance Article