Copper(II) hemocyanin models

Synthesis, Crystal Structures and Magnetic Properties of Two Heterobridged µ‐Phenoxo‐µ1,1‐Azide/Isocyanate Dinickel(II) Compounds: Experimental and Theoretical Exploration

“…Understanding of the magnetic properties in terms of structures of heterobridged exchange coupled systems is much more complicated in comparison to the homobridged exchange coupled systems because of the involvement of more than one type of pathway in superexchange and the accompanied cooperativity in the former type. Magnetic properties of several heterobridged dicopper(II) compounds could be rationalized in terms of orbital‐complementarity and orbital‐countercomplementarity effects, as copper(II) has only one magnetic orbital. However, these approaches are less effective for heterobridged compounds of other metal ions (say, Ni II ) in which there are more than one magnetic orbital .…”

Ferromagnetic Interaction in μ1,3‐Cyanamido‐Derived Copper(II) Cryptates

“…In most cases the magnetic interaction transmitted in the various available bridging modes is significantly affected by the geometry around the bridge. With the symmetric azido linker, [2,3] the consequence of this interaction ranges from effective magnetic silence in some noncolinear 1,3-linked dimetallic systems [4] to ferromagnetic coupling in 1,1-and colinear 1,3-arrangements. [5,6] In cases in which the bridging pseudohalide is unsymmetrical, the options for coordination linkage and associated magnetic interaction pathways are further increased.…”

Synthesis, Crystal Structure and Magnetic Properties of a (μ-Hydroxo)(μ-Pyrazolato) Dicopper(II) Complex

“…This was also supported by the work on the mono-/i-hydroxo-dicopper(II) complexes with large Cu-O-Cu angle [10,11] presence of a second bridging ligand [13,14]. This behaviour explained by using theories developed by Hoffmann et al [15].…”