Exchange coupling magnetic

Ab initio DDCI2 (difference-dedicated configuration interaction) calculations seem to provide accurate estimations of the magnetic exchange coupling constants, as demonstrated for the doubly azido-bridged nickel(II) dimer [Ni2(terpy)2(/i-l,l-N3)2]2+.2133... 

Inverse level lifetimes and total transition linewidths in some magnetic exchange coupled systems"... 

Still, there is opposite-spin state left at each site. Hopping to one of the next-neighbor sites requires a spin flip. Therefore, metal-insulator transitions involve intersite magnetic exchange coupling. This is the second effect directly or indirectly involved in conductive properties of these crystals. Magnetic effects are briefly discussed in Sect. 4.2. 

The question of the mechanism of the magnetic exchange coupling between the two Cu(II) ions is still unanswered because of the lack of information regarding additional ligands bridging the two metal ions. A recent model75) based on electronic... 

The effective hamiltonian representation of equations [8-10] is readily extensible to systems with more than one TM. The Hdd< matrix for such cases contains terms that account for d-electron delocalization (via the second term in Equation 9) from one metal to another - indirectly via the bridging ligands or directly via the corresponding off-diagonal terms of Hdd [33]. This interaction produces magnetic-exchange coupling, which is reviewed elsewhere [34, 35],... 

MAGNETIC EXCHANGE COUPLING AND POTENT ANTIVIRALACTIVrTY OF [(VO)3(SbW9033)2] ... 

Magnetic Exchange Coupling and Potent Antiviral Activity of l(V0)3(SbW903j)2] ... 

Copper(II) also experiences magnetic exchange coupling with co-balt(II) and nickel(II) when they occupy the zinc site. In the former case J has been estimated to be 17 cm (257). The electronic spectra of copper(II) are barely affected by the presence of cobalt(II) or nick-el(II) instead of zinc(II) (243, 258). The same holds when cadmium and mercury are in the zinc site (243). 

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