Acyclic and cyclic di- and tri(4-oxyphenyl-1,2-phenyleneethynylene)s: Their synthesis and ferromagnetic spin interaction

Hiroyuki Nishide*, Masahiro Takahashi, Junichi Takashima, Yong Jin Pu, Eishun Tsuchida

*この研究の対応する著者

研究成果: Article査読

30 被引用数 (Scopus)

抄録

A new set of π-conjugated and alternant but non-Kekule-type di- and tri(1,2-phenyleneethynylene)s pendantly substituted with phenoxyl radicals at the 4 positions (1a, 2a, and 3a) was synthesized. The synthesis of these acyclic and cyclic compounds was achieved through the head-to-tail coupling of 2-bromo(or -iodo)-4-[3',5'-di-tert-butyl-4'-trimethylsiloxyl(or - hydroxy)phenyl]-1-ethynylbenzenes. The di- and triphenoxyl compounds (1a, and 2a and 3a) were triplet and quartet at the ground state, respectively, which was ascribed to a ferromagnetic coupling effect of the diphenyl ethynylene bridge for the pendant phenoxyls' spins. The cyclic π-conjugation in 3a exhibited a stronger effect on the spin alignment.

本文言語English
ページ(範囲)7375-7380
ページ数6
ジャーナルJournal of Organic Chemistry
64
20
DOI
出版ステータスPublished - 1999 10 1

ASJC Scopus subject areas

  • 有機化学

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