Ring rotation controversy in cerium(IV) bis(tetraarylporphyrinate) double deckers

HPLC evidence for the question to rotate or not to rotate

Masayuki Takeuchi, Tomoyuki Imada, Masato Ikeda, Seiji Shinkai

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

To obtain unequivocal evidence for the rotation of two porphyrin rings in conventional cerium(IV) bis(tetraphenylporphyrinate) double decker analogues we newly synthesized 3 with one electron-withdrawing 4-pyridyl group and three electron-donating 4-methoxyphenyl groups per one porphyrin ring. VT-1H NMR and HPLC studies provided evidence strong enough to conclude that the two porphyrin rings do rotate in a speed a little slower than the 1H NMR time-scale.

Original languageEnglish
Pages (from-to)7897-7900
Number of pages4
JournalTetrahedron Letters
Volume39
Issue number43
DOIs
Publication statusPublished - Oct 22 1998

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Cerium
Porphyrins
High Pressure Liquid Chromatography
Nuclear magnetic resonance
Electrons
Proton Magnetic Resonance Spectroscopy

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

Cite this

Ring rotation controversy in cerium(IV) bis(tetraarylporphyrinate) double deckers : HPLC evidence for the question to rotate or not to rotate. / Takeuchi, Masayuki; Imada, Tomoyuki; Ikeda, Masato; Shinkai, Seiji.

In: Tetrahedron Letters, Vol. 39, No. 43, 22.10.1998, p. 7897-7900.

Research output: Contribution to journalArticle

Takeuchi, Masayuki ; Imada, Tomoyuki ; Ikeda, Masato ; Shinkai, Seiji. / Ring rotation controversy in cerium(IV) bis(tetraarylporphyrinate) double deckers : HPLC evidence for the question to rotate or not to rotate. In: Tetrahedron Letters. 1998 ; Vol. 39, No. 43. pp. 7897-7900.
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