4-methyl-4',5'-bis(methylsulfanyl)tetrathiafulvalene | 150758-34-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二硫醇
• 英文名称: 4-methyl-4',5'-bis(methylsulfanyl)tetrathiafulvalene
• 英文别名: 4,5-bis(methylthio)-4'-methyltetrathiafulvalene；2-(4-methyl-1,3-dithiol-2-ylidene)-4,5-bis(methylsulfanyl)-1,3-dithiole
• CAS: 150758-34-2
• 化学式: C₉H₁₀S₆
• 分子量: 310.574
• InChiKey: VKLGUFHBPICKDE-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.3
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  152
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  4-methyl-4',5'-bis(methylsulfanyl)tetrathiafulvalene 在 lithium diisopropyl amide 、 全氟己基碘烷 作用下， 以 乙醚 、 环己烷 为溶剂， 反应 3.0h， 以65%的产率得到4-iodo-5-methyl-4',5'-bis(methylsulfanyl)tetrathiafulvalene
  参考文献：
  名称：

  New bi(tetrathiafulvalenyl) derivatives and their radical cations: synthetic and X-ray structural studies

  摘要：

  一系列双（四硫富瓦烯基）衍生物已通过Ullmann偶联反应（在回流的N,N-二甲基甲酰胺中使用铜）或通过在20°C下与铜（I）噻吩-2-羧酸盐（CuTC）在1-甲基吡咯烷-2-酮中反应，从碘代TTF前体制备得到。溶液电化学和UV-VIS光谱学研究表明，在这些体系中，两个TTF单元之间没有显著的键间相互作用。报道了4,5,5',5'',4''',5'''-六甲硫基-4',4''-双四硫富瓦烯9和4,5:4''',5'''-双（乙二硫基）-5',5''-二甲基-4',4''-双四硫富瓦烯8+··ClO4−的1∶1高氯酸盐半导体的X射线晶体结构。在9中，中心键的扭转角度为89°，在8+··ClO4−中为77°。8+··ClO4−的晶体堆积特征为通过硫原子接触的阳离子形成的褶皱层，平行于（001）平面；阴离子位于平行于z轴并穿过阳离子图案的无穷通道中。

  DOI：

  10.1039/b000790k
• 作为产物：
  描述：

  dimethyl 4,5-bis(methylthio)-1,3-dithiole phosphonate ester 以38%的产率得到
  参考文献：
  名称：

  Fourmigue Marc, Krebs Frederik C., Larsen Jan, Synthesis, (1993) N 5, S 509-513

  摘要：

  DOI：

文献信息

• Synthesis and crystal engineering of new halogenated tetrathiafulvalene (TTF) derivatives and their charge transfer complexes and radical ion salts
  作者：Andrei S. Batsanov、Martin R. Bryce、Antony Chesney、Judith A. K. Howard、Derek E. John、Adrian J. Moore、Clare L. Wood、Hagit Gershtenman、James Y. Becker、Vladimir Y. Khodorkovsky、Arkady Ellern、Joel Bernstein、Igor F. Perepichka、Vincent Rotello、Mark Gray、Alejandro O. Cuello

  DOI：10.1039/b101866n

  日期：——

  Efficient syntheses are reported for tetraiodotetrathiafulvalene 2, 4-iodo-5-methyl-4′,5′-bis(methylsulfanyl)TTF 3, and 4-iodo-4′,5′-bis(methylsulfanyl)TTF 4 by iodination, using perfluorohexyl iodide, of lithiated derivatives of the corresponding TTF system. Bromination and chlorination of lithiotrimethylTTF using 1,2-dibromotetrafluoroethane and hexachloroethane gave 4-bromo- and 4-chloro-4′,5,5′-trimethylTTF 6 and 7, respectively. Phosphite-induced self-coupling or cross-coupling reactions of 4-iodo-1,3-dithiole-2-thione or 4,5-diiodo-1,3-dithiole-2-thione(one) half-units resulted in TTF derivatives with partial loss of the iodine substituent(s). 4,5-Dibromo-4′,5′-bis(cyanoethylsulfanyl)TTF 15 was prepared by cross-coupling methodology, and converted into 4,5-dibromo-4′,5′-bis(methylsulfanyl)TTF 16 by reaction with caesium hydroxide and then methyl iodide. EPR data are reported for the electrochemically generated cation radicals of trimethylTTFX derivatives (X = I, Br and Cl) 5–7, respectively. For the neutral donors, the X-ray crystal structures are reported for 2, 5, 6, tetramethylTTF 8 and 15. Structure 2 is characterised by a particularly dense packing with continuous chains of intra-stack I⋯I contacts (4.17–4.19 Å). The crystals of 6 and 8 are isomorphous, while the structure of 5 is different. The iodo-substituent in 5 affects the packing in a way the bromo-substituent in 6 does not, due to differences in specific interactions rather than steric demands of I and Br, which are similar. Structure 15 comprises face-to-face dimers with inter-dimer Br⋯Br (3.57 Å) and Br⋯S (3.55 Å) contacts: a remarkable difference in bond distances between the Br and S-substituted dithiole rings is observed. The 1 ∶ 1 charge-transfer (CT) complexes 3·TCNQ and 4·TCNQ (TCNQ = 7,7,8,8-tetracyano-p-quinodimethane, 17) display mixed stair-like stacks of alternating D and A moieties: the overall degree of CT is estimated from bond length analysis to be 0.2 e and 0.3 e, respectively. In 3·TCNQ either position of the disordered iodine atom has one short (inter-stack, but intra-layer) contact with a cyano group (I⋯N distances of 3.14 and 3.18 Å). In 4·TCNQ a similar I⋯N contact is much longer (3.35 Å). In the structure of 5+·I3−·½I2 the cation radical is disordered; dimeric cation radicals display short intra-dimer contacts (S⋯S 3.38–3.39 Å, C⋯C 3.35 Å) consistent with electron coupling. Each dimer is surrounded by four I3− anions. The crystal structure of 16+·I3− is comprised of layers with interplanar separations of 3.55 Å. Cations of one layer overlap with anions of the next, and the packing can be described as mixed stacks parallel to the a axis. The remarkably high conductivity of this salt for a system of 1 ∶ 1 stoichiometry (σrt = 8 × 10−2 S cm−1) is ascribed to partial charge transfer (the charge on the TTF moiety is estimated as +⅔ from bond length analysis) and a continuous system of short non-bonding contacts.

  报道了四碘四硫富瓦烯的高效合成方法，4-碘-5-甲基-4′,5′-双(甲基硫巴)TTF 3，以及4-碘-4′,5′-双(甲基硫巴)TTF 4，该方法通过用全氟己基碘对相应TTF体系的锂化衍生物进行碘化反应。使用1,2-二溴四氟乙烷和六氯乙烷对锂三甲基TTF进行溴化和氯化，分别得到了4-溴-和4-氯-4′,5,5′-三甲基TTF 6和7。由磷酸酯诱导的4-碘-1,3-二噁烯-2-硫酮或4,5-二碘-1,3-二噁烯-2-硫酮(一个)半单元的自偶联或交叉偶联反应导致TTF衍生物伴有部分碘取代基的损失。通过交叉偶联方法合成了4,5-二溴-4′,5′-双(氰乙基硫巴)TTF 15，并通过与氢氧化铯和随后与碘甲烷的反应转化为4,5-二溴-4′,5′-双(甲基硫巴)TTF 16。报告了为电化学生成的三甲基TTF衍生物(X = I, Br和Cl)的阳离子自由基进行的电子顺磁共振(EPR)数据。对于中性给体，报告了2、5、6、四甲基TTF 8和15的X射线晶体结构。结构2的特征在于具有特别密集的堆积形态，形成连续的堆叠内I⋯I接触(4.17–4.19 Å)。6和8的晶体是同构的，而5的结构则不同。由于特定相互作用的差异，而不是I和Br相似的立体要求，使得5中的碘取代基影响了堆积，而6中的溴取代基则没有。结构15由面对面二聚体组成，具有二聚体间的Br⋯Br(3.57 Å)和Br⋯S(3.55 Å)接触：观察到Br和S取代的二噁烯环之间的键长距离存在显著差异。1:1电荷转移(CT)复合物3·TCNQ和4·TCNQ(TCNQ = 7,7,8,8-四氰基-p-奎诺二甲烷，17)显示出交替的D和A基团的混合阶梯状堆叠：通过键长分析估计的CT整体程度分别为0.2 e和0.3 e。在3·TCNQ中，无序的碘原子在某个位置与一个氰基之间有一个短的(堆叠间，但层内)接触(I⋯N距离为3.14和3.18 Å)。在4·TCNQ中，类似的I⋯N接触则较长(3.35 Å)。在结构5+·I3−·½I2中，阳离子自由基无序；二聚阳离子自由基显示短的二聚内接触(S⋯S 3.38–3.39 Å, C⋯C 3.35 Å)，与电子耦合一致。每个二聚体周围都有四个I3−阴离子。16+·I3−的晶体结构由层组成，层间距离为3.55 Å。一个层的阳离子与下一个层的阴离子重叠，堆积可描述为沿a轴的混合堆叠。这种1:1化学计量比体系的盐具有显著高的导电性(σrt = 8 × 10−2 S cm−1)，归因于部分电荷转移(通过键长分析估计TTF基团的电荷为+⅔)和一种连续的短非键接触体系。
• A Selective Synthesis of Ethylenedithiotetrathiafulvalene (EDT-TTF) and Related Molecules
  作者：Marc Fourmigué、Frederik C. Krebs、Jan Larsen

  DOI：10.1055/s-1993-25894

  日期：——

  A selective synthesis of the ethylenedithiotetrathiafulvalene (EDT-TTF), involving a Wittig-Horner reaction is described and extended to related unsymmetrically substituted tetrathiafulvalenes, whose electrochemical properties are reported.

  描述了涉及 WiTTig-Horner 反应的亚乙基二硫四硫富瓦烯 (EDT-TTF) 的选择性合成，并将其扩展到相关的不对称取代的四硫富瓦烯，并报道了其电化学性质。