Nitroxide Radical Spin Probes for Exploring Halogen-Bonding Interactions in Solution

Gualandi Lorenzo; Mezzina Elisabetta; Franchi Paola; Lucarini Marco

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Nitroxide Radical Spin Probes for Exploring Halogen-Bonding Interactions in Solution

机译：一氧化氮自由基自旋探针，用于探索溶液中的卤素键相互作用

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The synthesis of 2,3,5,6-tetrafluoro-4-iodobenzyl tert-butyl nitroxide (2-I) and its use as spin probe for the detection of halogen-bond (XB) complexes by EPR is reported. Formation of a XB complex between 2-I and several XB acceptors was evidenced by a significant change in the value of the benzylic hyperfine splitting upon complexation. Thermodynamic parameters for the formation of XB complex with quinuclidine were obtained by recording EPR spectra in the temperature range 203-294 K. In addition, competitive experiments allowed for the measurement of the equilibrium constant of the XB complex with a chloride anion. The proposed procedure constitutes the first direct EPR methodology providing a reliable determination of the strength of the XB bond in solution.

机译：报道了2,3,5,6-四氟-4-碘苄基叔丁基硝基氧化氮（2-I）的合成及其作为自旋探针用于EPR检测卤素键（XB）配合物的用途。络合时苄基超精细拆分值的显着变化证明了2-I与几个XB受体之间XB络合物的形成。通过在203-294 K的温度范围内记录EPR光谱，获得了与奎尼丁形成XB配合物的热力学参数。此外，竞争实验还允许测量氯离子与XB配合物的平衡常数。拟议的程序构成了第一个直接EPR方法，提供了溶液中XB键强度的可靠确定。

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《Chemistry: A European journal》 |2016年第45期|共5页
作者
Gualandi Lorenzo; Mezzina Elisabetta; Franchi Paola; Lucarini Marco;
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正文语种 eng
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electron paramagnetic resonance; halogen bonding; nitroxide; spin probes; supramolecular chemistry;

机译：电子顺磁共振;卤素键;氮氧化物;自旋探针;超分子化学;

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1. Nitroxide Radical Spin Probes for Exploring Halogen-Bonding Interactions in Solution [J] . Gualandi Lorenzo, Mezzina Elisabetta, Franchi Paola, Chemistry: A European journal . 2016,第45期

机译：一氧化氮自由基自旋探针，用于探索溶液中的卤素键相互作用
2. INTRAMOLECULAR SPIN-INTERACTIONS BETWEEN TWO NITRONYL NITROXIDE OR IMINO NITROXIDE RADICAL UNITS LINKED TO THIENO[2,3-B]THIOPHENE AND THIENO[2,3-B]THIENO[3',2'-D]THIOPHENE CHROMOPHORES [J] . Akita T., Kobayashi K. Tetrahedron . 1996,第20期

机译：连接到噻吩并[2,3-B]噻吩和噻吩[2,3-B]噻吩[3'，2'-D]噻吩色团的两个硝基亚硝基氧自由基或亚氨基亚硝基氧自由基单元之间的分子内自旋相互作用
3. Two hetero-spin metal-radical complexes exhibiting strong antiferromagnetic interactions between the metal ions and nitroxide radicals [J] . Dong-Zhao Gao, Dai-Zheng Liao, Zong-Hui Jiang Transition Metal Chemistry . 2008,第1期

机译：两种杂旋金属-自由基配合物在金属离子和氮氧化物自由基之间表现出强反铁磁相互作用
4. Magneto-Structural Relationship on Strong Exchange Interactions between Chelating Nitroxide Radical and Transition-Metal Spins [C] . A Okazawa International Conference on Advanced Materials Science and Technology . 2017

机译：磁结构关系对螯合硝基X和过渡金属旋转的强交换相互作用
5. Reactions of peroxyl radicals with nitroxides, and, Development of a nitroxide-based fluorescent probe for peroxyl radicals [D] . Tang, Yu 2006

机译：过氧自由基与氮氧化物的反应，以及用于过氧自由基的基于氮氧化物的荧光探针的开发
6. EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide Free Radicals in Liquids 6. Separating Line Broadening due to Spin Exchange and Dipolar Interactions [O] . Barney L Bales, Michelle Meyer, Steve Smith, -1

机译：EpR线路班次和线路形状的变化由于自旋氮氧自由由于自旋交换和偶极相互作用自由基液体中分离6线扩张的交易所
7. EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide-Free Radicals in Liquids 4. Test of a Method to Measure Re-Encounter Rates in Liquids Employing 15N and 14N Nitroxide Spin Probes [O] . Barney L. Bales, Miroslav Peric 2016

机译：由于液体中无氮自由基的自旋交换引起的EpR线移位和线形变化4.使用15N和14N氮氧自旋探针测量液体中再遇率的方法测试
8. Characterization of Starburst Dendrimers by Electron Paramagnetic Resonance. 2.Positively Charged Nitroxide Radicals or Variable Chain Length Used as Spin Probes [R] . Ottaviani, M. F., Cossu, E., Turro, N. J., 1995

机译：用电子顺磁共振表征星爆树枝状大分子。 2.正电荷氮氧自由基或可变链长用作自旋探针

Nitroxide Radical Spin Probes for Exploring Halogen-Bonding Interactions in Solution

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