Linear or cyclic clusters of Cu(II) with a hierarchical relationship

Gavin A. Craig, Mike Schütze, David Aguilà, Olivier Roubeau, Jordi Ribas-Ariño, Sergi Vela, Simon J. Teat, Guillem Aromí

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The polydentate ligand 2,6-bis(5-(2-hydroxyphenyl)-pyrazol-3-yl)-pyridine, H4L, exhibits a series of coordination pockets favoring the establishment of metal sequences with predetermined motifs, together with a degree of flexibility for the formation of clusters with various overall topologies. With Cu(II) under strong basic conditions it has a marked tendency to stabilize a cyclic [Cu16L8] cluster. The sequential formation of this compound via [Cu7L8]2– intermediates, recognized in its structure, is suggested by crystallographic evidence, which shows the persistent formation of the complex salt (NBu4)2[Cu7L8] in the presence of the organic cation. Also, the crystallographic identification of the related cluster [Cu11L5(OH)2(py)12] from similar reaction conditions underscores the rich multiplicity of species attainable from this simple reaction system.
Original languageEnglish
Pages (from-to)3290-3297
Number of pages8
JournalInorganic Chemistry
Volume53
Issue number7
DOIs
Publication statusPublished - 7 Apr 2014

Keywords

  • Cu(II)
  • polydentate ligand
  • hierarchical relationship

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