Dipolar Quinoidal Acene Analogues as Stable Isoelectronic Structures of Pentacene and Nonacene

Quinoidal thia‐acene analogues, as the respective isoelectronic structures of pentacene and nonacene, were synthesized and an unusual 1,2‐sulfur migration was observed during the Friedel–Crafts alkylation reaction. The analogues display a closed‐shell quinoidal structure in the ground state with a d...

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Published inAngewandte Chemie Vol. 127; no. 48; pp. 14620 - 14624
Main Authors Shi, Xueliang, Kueh, Weixiang, Zheng, Bin, Huang, Kuo-Wei, Chi, Chunyan
Format Journal Article
LanguageEnglish
German
Published Weinheim WILEY-VCH Verlag 23.11.2015
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
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Summary:Quinoidal thia‐acene analogues, as the respective isoelectronic structures of pentacene and nonacene, were synthesized and an unusual 1,2‐sulfur migration was observed during the Friedel–Crafts alkylation reaction. The analogues display a closed‐shell quinoidal structure in the ground state with a distinctive dipolar character. In contrast to their acene isoelectronic structures, both compounds are stable because of the existence of more aromatic sextet rings, a dipolar character, and kinetic blocking. They exhibit unique packing in single crystals resulting from balanced dipole–dipole and [CH⋅⋅⋅π]/[CH⋅⋅⋅S] interactions. Chinocene: Zwei chinoide Acen‐Analoga wurden synthetisiert. Die Produkte sind gut löslich und hoch stabil. In ihren physikalischen Eigenschaften unterscheiden sie sich, wegen ihrer geschlossenschaligen chinoiden Struktur mit dipolarem Charakter im Grundzustand, deutlich von den entsprechenden Acenen. Im Einkristall bilden die Moleküle außergewöhnliche Packungen.
Bibliography:ArticleID:ANGE201507573
ark:/67375/WNG-RSFN7NGQ-9
istex:0940337A5DF8D6E53E9AA5119D6DB22DC46B83EB
MOE - No. R-143-000-573-112; No. MOE2014-T2-1-080; No. MOE2014-T3-1-004
KAUST
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ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201507573