Erratum to: High-Frequency and -Field Electron Paramagnetic Resonance of High-Spin Manganese(III) in Axially Symmetric Coordination Complexes
Erratum to: High-Frequency and -Field Electron Paramagnetic Resonance of High-Spin Manganese(III) in Axially Symmetric Coordination Complexes
复制标题
勘误表：轴对称配位配合物中高自旋锰 (III) 的高频场电子顺磁共振
DOI：
--
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
J. Krzystek
中科院分区：
文献类型：
--
作者：
J. Krzystek
用高频电子顺磁共振（HFEPR）研究了几种高自旋锰（III）（3d 4，S = 2）配合物：[Mn（Me 2dbm）X]和[Mn（OEP）X]（X = Cl−，Br−），其中Me 2dbm −为4，4 ′-二甲基二苯甲酰甲烷阴离子，OEP 2 −为2，3，7，8，12，13，17，18-八乙基卟啉阴离子.这些非Kramers（整数自旋）系统在常规磁场和微波频率下不具有EPR活性。然而，使用高达15 T的场与95-550 GHz范围内的多个频率相结合，可以观察到丰富详细的EPR谱。场和频率相关的HFEPR数据的分析允许精确确定这些络合物的以下自旋哈密顿参数：[Mn（Me 2dbm）Cl]，D =-2.45（3）cm−1; [Mn（Me 2dbm）Br]，D =-1.40（2）cm−1; [Mn（OEP）Cl]，D =-2.40（1）cm −1; [Mn（OEP）Cl]，D =-2.40（1）cm−1; [Mn（Me 2dbm）Br]，D =-2.45（3）cm−1; [Mn（Me 2dbm）Br]，D =-2.40（2）cm−1; [Mn（OEP）Cl]，D =-2.40（1）cm−1;[Mn（Me 2dbm）Br]，D =-2.45（3）cm−1。[Mn（OEP）Br]，D = −1.07（1）cm−1（E = 0，g = 2.0）。这些和相关的配合物的电子参数的结构数据的比较表明，定量的轴向和赤道结扎Mn（III）的电子结构的影响。这些高自旋复合物可以用作构建单分子磁体的构建块。因此，准确测定和理解这些单体单元的电子性质，最好通过HFEPR获得，对于理解和改善可以由它们形成的多核单分子磁体的性质是重要的。
High-frequency and -field electron paramagnetic resonance (HFEPR) has been used to study several complexes of high-spin manganese(III) (3d4,S = 2): [Mn(Me2dbm)X] and [Mn(OEP)X] (X = Cl−, Br−), where Me2dbm− is the anion of 4,4′-dimethyldibenzoylmethane and OEP2− is the dianion of 2,3,7,8,12,13,17,18-octaethylporphine. These non-Kramers (integer spin) systems are not EPR-active with conventional magnetic fields and microwave frequencies. However, use of fields up to 15 T in combination with multiple frequencies in the range of 95–550 GHz allows observation of richly detailed EPR spectra. Analysis of the field- and frequency-dependent HFEPR data allows accurate determination of the following spin Hamiltonian parameters for these complexes: [Mn(Me2dbm)Cl],D = −2.45(3) cm−1; [Mn(Me2dbm)Br],D = −1.40(2) cm−1; [Mn(OEP)Cl],D = −2.40(1) cm−1; [Mn(OEP)Br],D = −1.07(1) cm−1 (E ≈ 0, andg ≈ 2.0 in all cases). Comparison of structural data with the electronic parameters for these and related complexes shows quantitatively the effects of axial and equatorial ligation on the electronic structure of Mn(III). These high-spin complexes can be employed as building blocks in the construction of single-molecule magnets. Thus the accurate determination and understanding of the electronic properties, best obtainable by HFEPR, of these monomeric units is important in understanding and improving the properties of the polynuclear single-molecule magnets which can be formed from them.
新型单核锰（III）配合物的高频 EPR 研究：
影响因子：
4.6
作者：
Limburg,J;Vrettos,JS;Crabtree,RH;Brudvig,GW;dePaula,JC;Hassan,A;Barra,AL;Duboc-Toia,C;Collomb,MN
通讯作者：
Collomb,MN