Attempts To Observe Spin Catalysis by Paramagnetic Particles in the Photolysis of 7-Silanorbornadiene in Solution

Olga S. Volkova; Marc B. Taraban; Victor F. Plyusnin; Tatyana V. Leshina; Michael P. Egorov; Oleg M. Nefedov

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Attempts To Observe Spin Catalysis by Paramagnetic Particles in the Photolysis of 7-Silanorbornadiene in Solution

机译：尝试观察溶液中7-硅氮硼烷二烯光解过程中顺磁性粒子的自旋催化作用

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Addition of the stable radical, 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxyl (4-OH-TEMPO), to the reaction mixture in the photolysis of 7-silanorbornadiene in solution results in the decrease of the magnetic field effect detected for the yield of stable reaction product, tetraphenylnaphthalene (TPN). The dependence of TPN yield on 4-OH-TEMPO concentration obeys the Stern-Volmer equation; the estimated rate constant of the quenching of triplet dimethylsilylene by the stable radical is k_(TEMPO) = 1.4 * 10~8 M~(-1). In accordance with the suggested hypothesis, the paramagnetic additives-the stable radical and O_2, which has been studied earlier-change the T-S conversion rate in the intermediate biradicals via the so-called spin catalysis mechanism.

机译：在溶液中7-硅基硼烷二烯的光解反应中，向反应混合物中添加稳定的自由基4-羟基-2,2,6,6-四甲基哌啶-1-氧基（4-OH-TEMPO）导致磁场效应可检测出稳定的反应产物四苯基萘（TPN）的产率。 TPN产量对4-OH-TEMPO浓度的依赖性服从Stern-Volmer方程。稳定基团猝灭三重态二甲基亚甲硅烷基的估计速率常数为k_（TEMPO）= 1.4 * 10〜8 M〜（-1）。根据提出的假设，顺磁添加剂-稳定的自由基和O_2（已被较早研究）通过所谓的自旋催化机理改变了中间双自由基中的T-S转化率。

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《The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory》 |2003年第19期|共5页
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Olga S. Volkova; Marc B. Taraban; Victor F. Plyusnin; Tatyana V. Leshina; Michael P. Egorov; Oleg M. Nefedov;
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中图分类物理化学（理论化学）、化学物理学;
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1. Attempts To Observe Spin Catalysis by Paramagnetic Particles in the Photolysis of 7-Silanorbornadiene in Solution [J] . Olga S. Volkova, Marc B. Taraban, Victor F. Plyusnin, The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2003,第19期

机译：尝试观察溶液中7-硅氮硼烷二烯光解过程中顺磁性粒子的自旋催化作用
2. Current state of the spin exchange theory in dilute solutions of paramagnetic particles. New paradigm of spin exchange and its manifestations in EPR spectroscopy [J] . Salikhov K. M. Physics - Uspekhi . 2019,第10期

机译：顺磁颗粒稀释解决方案的旋转交换理论的当前状态。旋转交换的新范式及其在EPR光谱中的表现
3. Spin Exchange Between Charged Paramagnetic Particles in Dilute Solutions [J] . Kev M. Salikhov, Aydar Ye. Mambetov, Marcel M. Bakirov, Applied Magnetic Resonance . 2014,第9期

机译：稀溶液中带电顺磁性粒子之间的自旋交换
4. MICROSCOPIC PHASE SEPARATION AND TWO TYPE OF QUASIPARTICLES IN LIGHTLY DOPED La_(2-x)Sr_xCuO_4 OBSERVED BY ELECTRON PARAMAGNETIC RESONANCE [C] . A. Shengelaya, M. Bruun, B. I. Kochelaev, NATO Advanced Study Research Workshop on Symmetry and Heterogeneity in High Temperature Superconductors . 2006

机译：通过电子顺磁共振观察到的微观相分离和两种类型的Quasiparticle，通过电子顺磁共振观察到的轻掺杂La_（2-x）Sr_xcuo_4
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6. Dynamics and ordering in a spin-labeled oligonucleotide observed by 220 GHz electron paramagnetic resonance. [O] . D E Budil, S V Kolaczkowski, A Perry, 2000

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Attempts To Observe Spin Catalysis by Paramagnetic Particles in the Photolysis of 7-Silanorbornadiene in Solution

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