New Topologies in Pentanuclear Nickel/Oximato Clusters: Structural and Magnetic Characterization

In the present work, five new Ni5 clusters employing the versatile 2-pyridylcyanoxime ligand
have been synthesized and chemically, structurally, and magnetically
characterized. The crystallographic examination of these Ni5 clusters together with those already published in the literature,
giving a total number of 14 complexes, exhibiting up to 8 different
topologies for which the relationship between topology, reaction conditions
and magnetic response has been analyzed. DC magnetic measurements
were carried in the 300–2 K range for the new complexes and
the analysis of the experimental data revealed an antiferromagnetic
response for the oximato mediated interactions with a variety of ground
states (S = 0, 1, 3) as function of the cluster topology.