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

Xueliang Shi, Weixiang Kueh, Bin Zheng, Kuo-Wei Huang, Chunyan Chi

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37 Scopus citations

Abstract

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.
Original languageEnglish (US)
Pages (from-to)14412-14416
Number of pages5
JournalAngewandte Chemie International Edition
Volume54
Issue number48
DOIs
StatePublished - Oct 8 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: C.C. acknowledges financial support from the MOE Tier 1 grant (R-143-000-573-112), Tier 2 grant (MOE2014-T2-1-080), and Tier 3 programme (MOE2014-T3-1-004). K.-W.H. acknowledges financial support from KAUST. We thank Dr. Bruno Donnadieu and Dr. Tan Geok Kheng for the crystallographic analysis.

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