Vogler, Arnd and Kunkely, Horst
Outer-Sphere Ligand to Ligand Charge Transfer of Metal Complexes.
Journal of the Chemical Society - Chemical Communications, pp. 1616-1617.
The electronic spectra of the salts [NiII(tim)]2+[MII(mnt)2(t]i2m- = 2,3,9,1O-tetramethyl-l,4,8,11 -tetra-azacyclotetradeca-
1,3,8,10-tetraener H2mnt = 1,2-dicyano-l ,2-ethylenedithiolI M2+ = Ni2+, Pd2+, Pt2+) are dominated by an
intense absorption band which is assigned to an outer-sphere ligand to ligand charge transfer transition from the
complex anion to the cation.