Isomeric molecular rectangles resulting from self-assembly of dicopper complexes of macrocyclic ligands

Anna Company, Laura Gómez, Josep Maria López Valbuena, Ruben Mas-Ballesté, Jordi Benet-Buchholz, Antoni Llobet, Miquel Costas

Research output: Contribution to journalArticleResearchpeer-review

21 Citations (Scopus)

Abstract

Dinuclear copper complexes containing hexaazacyclophane macrocyclic ligands react with the disodium salt of terephthalic acid resulting in the self-assembly of rectangular molecules with the general formula [(Cu 2L)2(p-(O2-CC6H4CO 2)2)]X4, where X = CF3SO3 and ClO4 (3X4, L = Me2p and 4X4, L = Me2m). Tetranuclear complexes 3(CF3SO3)4 (as polymorphs 3a and 3b) and 4(ClO4)4 have been characterized by single-crystal X-ray diffraction analysis providing definitive proof of their structure as well as their metrical parameters. 3a contains, in its unit cell, two isomeric cationic units (3asyn and 3aanti) that differ in the relative position of the two O carboxylate atoms which bind to the Cu atoms of the different macrocyclic complexes, leading to boxes with different metrical parameters. ESI-MS analyses of solutions of the tetranuclear complexes 3(CF 3SO3)4 and 4(CF3SO3) 4 exhibit cluster ions which match the solid state formulation, thus demonstrating that the cages are retained in solution. © 2006 American Chemical Society.
Original languageEnglish
Pages (from-to)2501-2508
JournalInorganic Chemistry
Volume45
Issue number6
DOIs
Publication statusPublished - 20 Mar 2006

Fingerprint Dive into the research topics of 'Isomeric molecular rectangles resulting from self-assembly of dicopper complexes of macrocyclic ligands'. Together they form a unique fingerprint.

Cite this