Side-chain coordination polymers containing redox-active pendants: complexation of ferrocene-based bidentate ligands with M(hfac)<sub>2</sub>(hfac = 1,1,1,5,5,5-hexafluoroacetylacetonate, M = Mn, Ni, Cu, Zn) and CuX (X = I, Br)
作者:Ryo Horikoshi、Mikio Ueda、Tomoyuki Mochida
DOI:10.1039/b212518h
日期:——
Coordination polymers with redox active pendants, 5-ferrocenylpyrimidine·M(hfac)2}n [Mâ=âMn (1a), Ni (1b), Cu (1c), Zn (1d)] and 5-ferrocenylpyrimidine·CuX}n [Xâ=âI (2a), Br (2b)], have been prepared and characterized. In complex 1c, the Cu(II) ions are linked by the bridging ligands to form one-dimensional chains. This complex was shown to exhibit an antiferromagnetic intra-chain interaction, which was analyzed by the BonnerâFisher model (2J/kBâ=ââ6.3 K). Complex 2a shows a two-dimensional sheet-like structure, in which one-dimensional chains, consisting of the Cu(I) ions and the ligands, are further bridged by iodide anions. These compounds show quasi-reversible redox processes of the ferrocenyl groups in the solid state.
具有氧化还原活性侧链的配位聚合物,5-二茂铁基嘧啶·M(hfac)2}n [M−=−Mn (1a), Ni (1b), Cu (1c), Zn (1d)] 和 5已制备并表征了-二茂铁基嘧啶·CuX}n [X-=-I (2a), Br (2b)]。在配合物 1c 中,Cu(II) 离子通过桥连配体连接形成一维链。该复合物表现出反铁磁链内相互作用,并通过 Bonner–Fisher 模型 (2J/kB–=–6.3 K) 进行了分析。配合物2a显示出二维片状结构,其中由Cu(I)离子和配体组成的一维链进一步通过碘阴离子桥联。这些化合物显示出固态二茂铁基的准可逆氧化还原过程。