Chains of Nickel

In a typical Ni3(dpa)4Z2 complex, each terminal Ni atom has two impaired electrons, while the central one is typieal of diamagnetie square-planar Ni . Magnetie properties reveal antiferromagnetic coupling between 

Magnetic studies and DFT calculations indicate that the relative basicities of the donor atoms of the equatorial ligands are sufficient to influence the ground state of the metal framework. Further, in the absence of axial coordination, a chain of Ni atoms simply consists of stacked square, diamagnetic MN4 units. 

DFT calculations reveal that the spin state of nickel ions in the tetra-nuclear chain depends on the interplay between axial and equitorial 

Although metal chains have identical ligands, similar crystallographic structures, and physical dimensions, the resistance varies with the identity of the metal. For example, the resistance values of penta-chromium, penta-cobalt, and penta-nickel strings are 3.2 MO, 10.0 MO, and 24.0 MO, respectively. The discrepancy is linked to the extent of coupling of tf-orbital electrons between 

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