99372-94-8Relevant academic research and scientific papers
Diradical Anion of Potassium Aggregate: Reduction of Dimer Boroxide Complex
Zheng, Yang,Wang, Xi,Bai, Yunfei,Wang, Xingyong,Ru, Chenglong,Chen, Wenhao,Lv, Xiaoxia,Pan, Xiaobo,Wu, Jincai
, p. 13544 - 13551 (2018)
Crystalline aggregates containing metal cation clusters wrapped by reduced hydrocarbon anions have been presented. Initially, a dimeric complex (2) possessing a bimetallic K2O2 core was synthesized from the reaction between an anthracene substituted boronic acid (2-(anthracen-9-yl)phenyl)(hydroxy)(mesityl)borane (1-H) and KN(SiMe3)2 in THF solution. The B-O bond length (1.281(4) ?) in complex 2 is comparable to those observed in oxoboranes, indicating this may be a double bond, which is supported by its Wiberg bond order (1.9) predicted by density functional theory calculations. Subsequently, potassium aggregate complexes, diradical 3 and dihydro anion 4, were obtained through the reduction reactions of dimeric complex 2 and 1-H, respectively. They exhibit similar K3O2B2 aggregate structures, but differ significantly in the geometry of the anthracene units. Complex 3 features a triplet diradical character with planar anthracene units that carry the unpaired electrons, while the anthracene groups in complex 4 display a puckered structure due to the addition of hydrogen atoms.
A gold - {2 - (9 - anthracene phenyl) II cyclohexyl phosphine} - acetonitrile complex synthesis and application of
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, (2017/08/25)
The invention relates to a gold metal complex which is [Au{dicyclohexyl-[2-(9-anthracene)phenyl]phosphine}-NCCH3](SbF6), and the gold metal complex can be conveniently synthesized. The ligand can be synthesized in a simple mode, and large scale industrial production can be realized through stable existence of the ligand in air under normal temperature. The gold complex is capable of catalyzing a cycloaddition reaction of 1,6-eneyne, and has good reaction activity. The catalyst has the advantage of less catalyst amount of a traditional metal complex, and overcomes the disadvantage of expensive cost of noble metal catalysts such as Pd and Pt. The reaction is carried out in a dichloromethane system, the catalyst amount is less, reaction condition is mild, reaction time is short, and post-treatment is convenient. The catalyst has important application in the cycloaddition reaction, and has large application prospect in industrial production.
PHOTOCHEMICAL VS. ELECTROCHEMICAL ELECTRON-TRANSFER REACTIONS. ONE-ELECTRON REDUCTION OF ARYL HALIDES BY PHOTOEXCITED ANION RADICALS.
Nelleborg, Palle,Lund, Henning,Eriksen, Jens
, p. 1773 - 1776 (2007/10/02)
Electrochemical reduction of aryl halides generally leads to expulsion of halide ion.The product aryl radical is unavoidably further reduced.In contrast, reduction of aryl halides by photoexcited anion radicals may be stopped at the aryl radical stage owing to the bimolecular nature of electron-transfer reactions.We have tested this hypothesis by photoinducing electron-transfer from anthraquinone anion radical to several aryl halides.For each halide it was possible to trap the corresponding radical by anthracene forming substituted 9-phenylanthracenes.
