Three-spin system with a twist: a bis(semiquinonato)copper complex with a nonplanar configuration at the copper(II) center.
Three-spin system with a twist: a bis(semiquinonato)copper complex with a nonplanar configuration at the copper(II) center.
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具有扭曲的三自旋系统：在铜（II）中心具有非平面构型的双（半醌）铜络合物。
DOI：
10.1002/anie.200462339
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发表时间：
2005
影响因子：
--
通讯作者：
W. Kaim
中科院分区：
文献类型：
--
作者：
Shengfa Ye;B. Sarkar;F. Lissner;T. Schleid;J. van Slageren;J. Fiedler;W. Kaim
在四配位铜（II）中心周围具有显着非平面环境的络合物比较罕见，并且经常与铜酶建模[1]或与蓝铜蛋白中高度扭曲的1型铜中心有关。[2]这些中心表现出部分硫配位和作为电子转移网站，穿梭于CuII和CuI状态之间。CuII，I对也可以在与一个[3，4]或两个[5，6]非无辜醌配体（Q）的电子转移相互作用中是活性的。虽然在[7]和[4]氧化酶内观察到了生物化学相关的价态互变异构体平衡CuII（Q2 I）QCuI（QCII），但Cu（Q）2化合物的重点是研究稳定三自旋系统（QCII）CuII（QCII）中的自旋-自旋相互作用。[5，6]使用空间保护的邻苯并半醌单亚胺，如QxC_（12），Chaudhuri埃塔尔已经描述了一个平面的这样的配合物[（QxC <$）CuII（QxC <$）]（1），具有（↑，↑，↓）基态，含有两个反铁磁耦合的自由基配体。[6]美国
Complexes with a significantly nonplanar environment around tetracoordinate copper (ii) centers are comparatively rare and were often investigated in connection with copper enzyme modeling [1] or with the highly distorted type 1 copper centers in blue copper proteins.[2] These centers exhibit partial sulfur coordination and act as electron-transfer sites, shuttling between the CuII and CuI states. The CuII, I couple can also be active in the electron-transfer interaction with one [3, 4] or two [5, 6] non-innocent quinone ligands (Q). While a biochemically relevant valence tautomer equilibrium CuII (Q2À) QCuI (QCÀ) has been observed within [7] and outside [4] oxidase enzymes, the focus with Cu (Q) 2 compounds has been on the study of spin–spin interaction in stable three-spin systems (QCÀ) CuII (QCÀ).[5, 6] Using sterically protected o-benzosemiquinonemonoimines, such as QxC À, Chaudhuri etal. have described a planar such complex [(QxC À) CuII (QxC À)](1), with a (↑,↑,↓) ground state containing two antiferromagnetically coupled radical ligands.[6]
影响因子：
56.9
作者：
Wang, YD;DuBois, JL;Stack, TDP
通讯作者：
Stack, TDP