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|Section2= |Section7= }} Tetracyanoquinodimethane (TCNQ) is the organic compound with the formula (NC)2CC6H4C(CN)2. This cyanocarbon is a relative of para-quinone is an electron acceptor that is used to prepare charge transfer salts, which are of interest in molecular electronics. ==Preparation and structure== TCNQ is prepared by the condensation of 1,4-cyclohexanedione with malononitrile, followed by dehydrogenation of the resulting diene with bromine:〔"Substituted Quinodimethans. I. Preparation and Chemistry of 7,7,8,8-Tetracyanoquinodimethan" J. Am. Chem. Soc. 1962, Volume 84, pp. 3370-3374. 〕 :C6H8O2 + 2 CH2(CN)2 → C6H8(C(CN)2)2 + 2 H2O :C6H8(C(CN)2)2 + 2 Br2 → C6H4(C(CN)2)2 + 4 HBr The molecule is planar, with D2h symmetry.〔Long, Robert E.; Sparks, Robert A.; Trueblood, Kenneth N. "The crystal and molecular structure of 7,7,8,8-tetracyanoquinodimethane" Acta Crystallographica 1965, volume 18, 932-9. 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Tetracyanoquinodimethane」の詳細全文を読む スポンサード リンク
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