Syntheses and structures of a novel trinaphthylene hexaimino cryptand: Three different conformations of a macrobicyclic ligand

Tadanobu Sato, Atsushi Suzuki, Ken Sakai, Taro Tsubomura

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A synthesis in good yield of a new hexaimino cryptand containing two tris(2-aminoethyl)amine moieties bridged by three naphthylene groups is reported. Ag+ and Cu+ cryptates of the ligand have also been prepared and characterized. The cryptand and cryptates have been structurally analyzed by X-ray diffraction, unveiling three different conformations. The macrobicyclic ligand has an anti conformation in the cryptand, but has a sym form in each cryptate. Although the Ag+ cryptates have a symmetric structure on the three arms, one of the three arms in the Cu+ complex shows remarkable bending. The bent conformation is intrinsic of the Cu+ complex, as indicated by X-ray analyses and MM2 calculations. The temperature dependence of the 1H NMR spectra has also been investigated, revealing fluxional behaviors of the ligand in each compound.

Original languageEnglish
Pages (from-to)379-388
Number of pages10
JournalBulletin of the Chemical Society of Japan
Volume69
Issue number2
DOIs
Publication statusPublished - Jan 1 1996
Externally publishedYes

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Crown Ethers
Conformations
Ligands
Nuclear magnetic resonance
X ray diffraction
X rays
cryptand
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Syntheses and structures of a novel trinaphthylene hexaimino cryptand : Three different conformations of a macrobicyclic ligand. / Sato, Tadanobu; Suzuki, Atsushi; Sakai, Ken; Tsubomura, Taro.

In: Bulletin of the Chemical Society of Japan, Vol. 69, No. 2, 01.01.1996, p. 379-388.

Research output: Contribution to journalArticle

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