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Heteroleptic phthalocyaninato-[tetra(15-crown-5)phthalocyaninato] lanthanides(III) double-deckers: Synthesis and cation-induced supramolecular dimerisationстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 9 июня 2017 г.
- Авторы: Martynov Alexander G., Gorbunova Yuliya G.
- Журнал: Inorganica Chimica Acta
- Том: 360
- Номер: 1
- Год издания: 2007
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 122
- Последняя страница: 130
- DOI: 10.1016/j.ica.2006.07.078
- Аннотация: A series of heteroleptic bisphthalocyaninates [(15C5)(4)Pc]M(Pc) ((15C5)(4)Pc = 2,3,9,10,16,17,24,25-tetrakis(15-crown-5)phthalocyaninate; Pc = unsubstituted phthalocyaninate; M = La, Sm, Dy, Tm) was synthesized. The raise-by-one-story method was applied in the cases of Sm, Dy and Tm complexes, whereas for the La complex we have developed a new synthetic approach. The complex [(15C5)(4)Pc]La(Pc) is the first representative of heteroleptic lanthanum diphthalocyaninates. Homoleptic counterparts M[(15C5)(4)Pc](2) and M(Pc)(2), M = La, Sm, Dy, Tm have also been prepared for comparative studies. The UV-Vis spectral properties of all synthesized heteroleptic compounds were investigated and compared to those of the homoleptic unsubstituted and crown-substituted diphthalocyaninates. Cation-induced dimerisation of heteroleptic complexes was studied. The observed spectral effects were explained in terms of excitonic coupling between chromophoric molecules. The unsymmetrical distribution of electronic density over macrocyclic ligands is established.
- Добавил в систему: Горбунова Юлия Германовна