Kristallographische Gegenüberstellung der Monokationen von Bis(fulvalen)dieisien und Bis(fulvalen) eisen-cobalt mit identischem Gegenion (PF6−)
摘要:
A crystallographical comparison of bis(fulvalene)diiron (BFFeFe+) and bis(fulvalene)iron-cobalt (BFFeCo+)mono-hexafluorophosphates reveals strikingly similar lattices. This provides further evidence for a valence averaged system also in the case of the mixed membered [0.0]metallocenophane salt BFFeCo+PF6-. Despite the nearly uniform charge distribution over both metallocene units, the heteronuclear BFFeCo+ molecules are not randomly oriented in the counter-ion environment. Lattice layers are slightly displaced in contrast to BFFeFe+PF6-. The Fe-Fe and the Fe-Co compound crystallize in the monoclinic space groups C2/m and C2/c, respectively.
Biferrocene and ferrocenylruthenocene react with HgCl2 to give very stable adducts. Large quadrupole splitting values (2.93 mm s−1 for biferrocene–2HgCl2 and 2.99 mm s−1 for ferrocenylruthenocene–5HgCl2, both at 78 K) indicate the presence of a direct interaction between the Fe and Hg atoms. The stabilities of their adducts suggest a chelating effect between the Fe and Fe or Fe and Ru atoms in biferrocene
双二茂铁和二茂铁基钌与 HgCl2 反应生成非常稳定的加合物。大的四极分裂值(双二茂铁-2HgCl2 为 2.93 mm s-1,二茂铁-5HgCl2 为 2.99 mm s-1,均在 78 K)表明 Fe 和 Hg 原子之间存在直接相互作用。它们的加合物的稳定性表明,Fe 和 Fe 或 Fe 和 Ru 原子分别在双二茂铁或二茂铁基二茂铁中具有螯合作用。
The synthesis of binuclear half-open 1,1′-biferrocene: redox behavior and an interpretation of the 57Fe Mössbauer data
Replacing the two Cp rings of 1,1′-biferrocene with pentadienyl ligands results in a cathodic shift of the redox potential for the ferrocene/ferrocenium couple and decreased quadrupole splitting in the Mössbauer spectrum and these findings can be accounted for by a change in the orbital population around the metal atom.
Electrochemical reduction of newly synthesised bis(fulvalene)diiron derivatives, [Fe2(C10H8)(C10H8–nRn)](R = CClCHCHO, n= 1 or 3), in NBu4ClO4–MeCN leads to the deposition of stable electroactive films on glassy carbon and indium–tin oxide coated glass electrodes. The difference in the number of substituents affects the electropolymerization reaction rate and physical and electrochemical properties
在NBu 4 ClO 4中对新合成的双(富瓦烯)二铁衍生物[Fe 2(C 10 H 8)(C 10 H 8– n R n)](R = CCl CHCHO,n = 1或3)进行电化学还原–MeCN导致在玻璃碳和氧化铟锡涂层的玻璃电极上沉积稳定的电活性膜。取代基数目的差异影响电聚合反应速率以及聚合物膜的物理和电化学性质。电极膜控制有机和有机金属电子受体(例如p)在氧化还原反应中的可逆性-苯醌和乙腈中的钴ce盐。
Davison, A.; Rudie, A. W., Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry, 1980, vol. 10, p. 391 - 396