Unusual reactivity of copper(I) complexes of functionalised calix[4]arenes

Coordination chemistry of calix[4]arene derivatives with lower rim functionalisation and their applications

“…A study by McGinley and co-workers reported on the chemical behaviour of metal ions, specifically copper(II) and copper(I) ions, complexed at the lower rim of functionalised calixarenes [81] ( Fig. 39).…”

Wide- and narrow-rim functionalised calix[4]arenes: synthesis and characterisation

“…To test this theory, we decided to carry out an initial study of the reaction between cis-bis(2,2 0 -bipyridine)dichloro-ruthenium(II) (Ru-(bipy) 2 Cl 2 ) and the calix [4]arene derivatives 11, 12 and 13. This consisted of carrying out the reaction, in each case, in ethanol at reflux temperature for 3 h followed by the addition of tetrabutylammonium hexafluorophosphate in order to precipitate a solid material.…”

“…As part of a broad study of the interactions of various functional groups at both the wide and narrow rims, we have prepared and characterised some dipyridyl calix [4]arenes and their copper(I/II) complexes. 2 This paper describes the functionalisation of the narrow rim with either n-butyl, benzyl or ester groups and the subsequent wide-rim derivatisation via amide groups containing a bipyridyl group.…”

Calixarene complexes with soft metal ions

“…44 Many reports deal with calixarene copper complexes. [45][46][47][48][49][50] In investigation of calixarenes 1-3 bearing β-ketoimine groups, it was shown that these functions enable their complexation with transition metal ions. Calixarenes 1-3 exist in a cone conformation in solution; with Cu 2+ , Ag + and Hg 2+ ions they yield the 1:1 complexes.…”