二价铁羧酸盐配合物的水依赖反应。
Water-dependent reactions of diiron(II) carboxylate complexes.
作者信息
Yoon Sungho, Lippard Stephen J
机构信息
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
出版信息
J Am Chem Soc. 2004 Dec 29;126(51):16692-3. doi: 10.1021/ja044489y.
Carboxylate-rich diiron(II) compounds with varying numbers of water ligands have been characterized, including the first complex with a {Fe2(mu-OH2)2(mu-O2CArTol)}3+ unit. The isolation of these complexes reveals how water can alter the structural properties of carboxylate-bridged diiron(II) core similar to those that occur in a variety of dioxygen-activating metalloenzyme cores. Mössbauer and variable temperature, variable field magnetic susceptibility experiments indicate that the compound [Fe2(mu-OH2)2(mu-O2CAr4F-Ph)(O2CAr4F-Ph)3(THF)2(OH2)] has a high-spin diiron(II) core with little significant magnetic exchange coupling.
已对具有不同数量水配体的富羧基二价铁化合物进行了表征，其中包括首个具有{Fe2(μ - OH2)2(μ - O2CArTol)}3+单元的配合物。这些配合物的分离揭示了水如何改变羧酸盐桥联二价铁核心的结构性质，类似于在各种双加氧激活金属酶核心中发生的情况。穆斯堡尔谱以及变温和变场磁化率实验表明，化合物[Fe2(μ - OH2)2(μ - O2CAr4F - Ph)(O2CAr4F - Ph)3(THF)2(OH2)]具有高自旋二价铁核心，且几乎没有明显的磁交换耦合。
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