Yg. Yin et al., Syntheses, crystal structure and properties of complexes of metallocene - conjugated macrocyclic ligand, ACT CHIM S, 57(1), 1999, pp. 93-99
Four complexes ([Co(III)(2)(L1)(2)(AcO)(2)(OH)] (AcO)( I)(2) 4H(2)O 1, [Fe(
III)(2) (L1)(2) (AcO)(2)(OH)](ClO4)(2)(I) 2, [Co(III)(2)(L1)(2) (AcO)(2)(OH
)](ClO4)(3) 4H(2)O 3, and[Fe(III)(2)(L1)(2) (AcO)(2)(OH)] (AcO)(ClO4)(2) 4H
(2)O 4)(where L1 = N - ferrocenylmethyl - 1,4,7 - triazacyclononane and L2=
N - ruthenocenylmethyl - 1,4, 7 - triazacyclononane). were synthesised and
characterized. Crystal structure of 1 shows that the complexes have a line
arly arranged four - core skeleton which can be depicted as Mc - B - M - B'
- M - B - Me (where Me represents metallocenylCunit, B and B' represent br
idging groups). Electrochemical investigation of these complexes confirms t
hat introduction of the guest metal ions, M, onto the free ligand induces a
n anodic shift of the redox potential of metallocene and, at the same time,
that coordination of ligand to the metal ions causes change in the electro
chemical behavior of the guest ion. No interaction is observed between two
metallocene components separated by TACN - M (III) fragment, but an interac
tion between two guest ions is emphasized by the capture of mix - valence s
pecies during the course of electrochemical investigation.