Syntheses and Crystal Structures of Fused Thiophenes: [7]Helicene and Double Helicene, a D-2-Symmetric Dimer of 3,3 '-Bis(dithieno[2,3-b:3 ',2 '-d]thiophene)
| Data(s) |
2009
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| Resumo |
The efficient synthesis of (TMS)(2)-[7]helicene (rac-3) and double helicene, a D-2-symmetric dimer of 3,3'-bis(dithieno-[2,3-b:3',2'-d]thiophene) (rac-4) was developed. The crystal structures of 3 and 4 show both strong intermolecular pi-pi interactions and S center dot center dot center dot S interactions. UV/vis spectra reveal that both 3 and 4 show significant pi-electron delocalization. |
| Identificador | |
| Idioma(s) |
英语 |
| Fonte |
Li CL;Shi JW;Xu L;Wang YG;Cheng YX;Wang H.Syntheses and Crystal Structures of Fused Thiophenes: [7]Helicene and Double Helicene, a D-2-Symmetric Dimer of 3,3 '-Bis(dithieno[2,3-b:3 ',2 '-d]thiophene),JOURNAL OF ORGANIC CHEMISTRY,2009,74(1):408-411 |
| Palavras-Chave | #CROSS-CONJUGATED OLIGOTHIOPHENES #FIELD-EFFECT TRANSISTORS #CARBON-SULFUR #ASYMMETRIC-SYNTHESIS #BETA-OLIGOTHIOPHENES #MOLECULES #TETRAPHENYLENES #SEMICONDUCTOR #DERIVATIVES #HELIX |
| Tipo |
期刊论文 |
