Coordination polymers showing redox activity have been constructed by using ferrocene-based bidentate ligands, 1,1'-(4-dipyridinethio)ferrocene (1) and 1,1'-(2-dipyridinethio)ferrocene (2). The ligand of 1 formed an Ag(I) coordination polymer, 1 x AgPF(6) x (CH(3)CN)(2) (3). This complex showed a 1-D double-chain structure, with a weak interchain Ag...Ag interaction. Combination of 1 with M(hfac)(2) (M = Mn, Cu, Zn) afforded 1-D chain complexes, 1 x M(hfac)(2) (M = Mn (5), Cu (6), Zn (7)). The complex 2 x CuPF(6) (8) showed a 1-D twisted helix-like chain structure.
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Horikoshi et al. (2002) studied this question.