Hess Corinna R, Weyhermüller Thomas, Bill Eckhard, Wieghardt Karl
Max Planck Institut für Bioanorganische Chemie, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany.
Angew Chem Int Ed Engl. 2009;48(20):3703-6. doi: 10.1002/anie.200900725.
Mixed doubles: The dimeric complex [{Fe(tim)}(2)] (see structure, tim = 2,3,9,10-tetramethyl-1,4,8,11-tetraazacyclotetradeca-1,3,8,10-tetraene) represents an unprecedented complex containing an unsupported Fe-Fe bond. The crystal structure confirms the presence of reduced tim units, thus indicating ligand redox activity. Spectroscopic and computational studies establish a triplet ground state for [{Fe(tim)}(2)] and suggest a mixed-valence compound with respect to both the Fe ions and the ligands.
二聚配合物[{Fe(tim)}(2)]（见结构，tim = 2,3,9,10 - 四甲基 - 1,4,8,11 - 四氮杂环十四碳 - 1,3,8,10 - 四烯）代表了一种前所未有的含有未配位Fe - Fe键的配合物。晶体结构证实了还原态tim单元的存在，从而表明配体具有氧化还原活性。光谱和计算研究确定[{Fe(tim)}(2)]的基态为三重态，并表明该化合物在铁离子和配体方面均为混合价态化合物。
