Surface functionalization of dinuclear clathrochelates: Via Pd-catalyzed cross-coupling reactions: Facile synthesis of polypyridyl metalloligands

Mathieu Marmier, Giacomo Cecot, Basile F E Curchod, Philip Pattison, Euro Solari, Rosario Scopelliti, Kay Severin*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

10 Citations (Scopus)
227 Downloads (Pure)

Abstract

Dinuclear clathrochelate complexes are easily accessible by reaction of zinc(ii) triflate or cobalt(ii) nitrate with arylboronic acids and phenoldioximes. The utilization of brominated arylboronic acids and/or brominated phenoldioximes allows preparing clathrochelates with two, three, five or seven bromine atoms on the outside. These clathrochelates can undergo Pd-catalyzed cross-coupling reactions with 3- and 4-pyridylboronic acid to give new metalloligands featuring up to seven pyridyl groups. The pyridyl-capped clathrochelates display characteristics which make them interesting building blocks for structural supramolecular chemistry: they are rigid, large (up to 2.7 nm), luminescent (for M = Zn), and anionic. The pentatopic pyridyl ligands display an unusual trigonal bipyramidal geometry.

Original languageEnglish
Pages (from-to)8422-8427
Number of pages6
JournalDalton Transactions
Volume45
Issue number20
Early online date25 Apr 2016
DOIs
Publication statusPublished - 28 May 2016

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