The impact of the lanthanide contraction on the structure of complexes of a calix[4]arene trisamide

G.L. Nealon, M. Mocerino, M.I. Ogden, Brian Skelton

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12 Citations (Scopus)

Abstract

The syntheses of samarium, holmium, and ytterbiumcomplexes of a tris-amide calix[4]arene are described,and the resulting structures are compared with the previouslyreported gadolinium complex. The syntheses involvedthe reaction of 5,11,17,23-tetra-tert-butyl-24-hydroxy-26,27,28-tris(diethylcarbamoylmethoxy)calix[4]arene with theappropriate lanthanide picrate hydrate. Structural studiesdemonstrated that a picrate anion acts as a quasi-bidentateligand with Sm (and Gd), is unidentate in the Ho complex,but is found in the second coordination sphere for thesmallest lanthanide cation (Yb) investigated.
Original languageEnglish
Pages (from-to)25-30
JournalJournal of Inclusion Phenomena and Macrocyclic Chemistry
Volume65
Issue number1/2
DOIs
Publication statusPublished - 2009

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