Synthesis, Structure, Spectroscopic Studies, and Complexation of Novel Crown Ether Butadienyl Dyes
2002 (English)In: Helvetica Chimica Acta, Vol. 85, no 1, 60-81 p.Article in journal (Refereed) Published
Butadienyl dyes of the benzothiazole series with various fragments of benzocrown ethers 1a-c were synthesized for the first time. The structures and spectral properties of crown-containing butadienyl dyes and their complexes with alkali and alkaline-earth metal cations were studied by X-ray diffraction analysis and 1H-NMR, UV/VIS, and resonance Raman spectroscopy. To interpret the experimental results, quantum-chemical calculations were performed. In the case of Sr2+ and Ba2+ ions, the formation of strong sandwich complexes [M(1b)2]2+ of an unusual structure involving stacking interactions was established; the dye molecules are arranged one above another in the complex according to the head-to-head' pattern.
Place, publisher, year, edition, pages
2002. Vol. 85, no 1, 60-81 p.
IdentifiersURN: urn:nbn:se:umu:diva-9088DOI: 10.1002/1522-2675(200201)85:1<60::AID-HLCA60>3.0.CO;2-COAI: oai:DiVA.org:umu-9088DiVA: diva2:148759