Spectrophotometric study of the cation-induced dimerization of heteroleptic terbium(III) tetra-15-crown-5-bisphthalocyaninate


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We proposed a new approach to the synthesis of heteroleptic crown-substituted terbium(III) bisphthalocyaninate, [(15C5)4Pc]Tb(Pc) (1) based on the reaction of unsubstituted lanthanum bisphthalocyaninate (La(Pc)2) with tetra-15-crown-5-phthalocyanine (H2[(15C5)4Pc]) and terbium(III) acetate in a mixture of octanol and chloronaphthalene in the presence of 1,8-diazabicyclo[ 5.4.0]undec-7-ene as an organic base. For the first time, we carried out a comparative spectrophotometric titration of compound 1 with MBPh4 solutions (M = K, Rb, Cs) and demonstrated the formation of isostructural cofacial supramolecular dimers. Spectral-structural correlations were developed for evaluation of the distances between phthalocyanine ligands in new supramolecular assemblies, which can be used for the development of polynuclear suprasingle-molecule magnetic materials.

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A. Martynov

A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: Martynov.Alexandre@gmail.com
俄罗斯联邦, Build. 4, 31 Leninsky prosp., Moscow, 119991

A. Bykov

Department of Chemistry, Lomonosov Moscow State University

Email: Martynov.Alexandre@gmail.com
俄罗斯联邦, Build. 3, 1 Leninskie Gory, Moscow, 119991

Yu. Gorbunova

A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences; N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: Martynov.Alexandre@gmail.com
俄罗斯联邦, Build. 4, 31 Leninsky prosp., Moscow, 119991; 31 Leninsky prosp., Moscow, 119991

A. Tsivadze

A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences; N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: Martynov.Alexandre@gmail.com
俄罗斯联邦, Build. 4, 31 Leninsky prosp., Moscow, 119991; 31 Leninsky prosp., Moscow, 119991

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