A Geometrically Constraining Bis(benzimidazole) Ligand and Its Nearly Tetrahedral Complexes with Fe(II) and Mn(II)
作者:Robert T. Stibrany、Maxim V. Lobanov、Harvey J. Schugar、Joseph A. Potenza
DOI:10.1021/ic030180o
日期:2004.2.1
nine-membered M(4) rings in the twist-boat-boat conformation. Individually, the cations show R,R or S,S stereochemistry, and the crystals are racemates. Mn(II)(4)2.(ClO4)2 exhibits a quasi-reversible Mn(II) --> Mn(III) oxidation at E(1/2) = 0.64 V; the corresponding Fe(II) --> Fe(III) oxidation occurs at E(1/2) = 1.76 V. The electrochemical stability of the Fe(III) oxidation state in this system suggests the