A twin-TCNQ-type acceptor: synthesis of 11,11,12,12,13,13,14,14-octacyano-1,4:5,8-anthradiquinotetramethane and the structure of its (1 : 1) tetraethylammonium salt
dicyanomethylation with excess of NaCH(CN)2 followed by repetition of the successive bromination–dehydrobromination procedure gives the title compound (20%), the structure of which has been confirmed by X-ray analysis of its monoanionic semiconductor Et4N+ salt.
用八氢蒽的溴化Ñ然后用过量胆碱(CN)的溴代琥珀酰亚胺dicyanomethylation(NBS)2,接着连续溴化-脱溴化氢步骤的重复,得到标题化合物(20%),其结构已被证实X -射线分析其单阴离子半导体Et 4 N +盐。
ELECTRODE ACTIVE MATERIAL COMPRISING QUINODIMETHANE DERIVATIVES, AND DERIVATIVES, AND SECONDARY BATTERY COMRISING THE SAME
申请人:SAMSUNG ELECTRONICS CO., LTD.
公开号:US20170288228A1
公开(公告)日:2017-10-05
An electrode active material including at least one selected from a quinodimethane derivative and a lithium salt thereof, wherein the quinodimethane derivative has at least three linearly-condensed aryl groups and at least two quinodimethane moieties.
A Twin-TCNQ-Type Acceptor. Synthesis of 11,11,12,12,13,13,14,14-Octacyano-1,4:5,8-anthradiquinotetramethane and Structures of the Tetraethylammonium Salts of Its Mono- and Dianion
stronger acceptor than tetracyanoquinodimethane (TCNQ, E1⁄21 0.17 V vs. SCE). Both 1:1 and 2:1salts, (Et4N)(OCNAQ) and (Et4N)2(OCNAQ), were obtained from reactions of Et4NI with potassium and lithium salts of OCNAQ, respectively. The X-raycrystal analyses of these salts indicate that the TCNQ moieties are boat-shaped bent to opposite directions. With the 1:1salt, which behaves as a semiconductor (4...
Polycyclic aromatic hydrocarbons are difficult substrates for hydrogenation because of the thermodynamic stability caused by aromaticity. We report here the first chromium- and cobalt-catalyzed, regiocontrolled hydrogenation of polycyclic aromatic hydrocarbons at ambient temperature. These reactions were promoted by low-cost chromium or cobalt salts combined with diimino/carbene ligand and methylmagnesium