A dinuclear copper(II) macrocyclic pyrazole compound catalyses the oxidative polymerisation of 2,6-dimethylphenol

WL Driessen*, PJ Baesjou, JE Bol, H Kooijman, AL Spek, J Reedijk

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The single crystal X-ray structure of the compound [Cu-2(EtPy24Pz)(NO3)(2)](NO3)(2)(H2O)(7), with EtPy24Pz is 10,24-di(pyridin-2-ylethyl)-1,5,10,15,19,24,29,30,31,32-decaaza-6,14,20,28-tetramethyl)-pentacyclo-[24.2.1.1(5,8).1(12,15),1(19,22)]dotriaconta-6,8(30),12(31), 13,20,22(32),26(29),27-octaene, shows the copper(II) ions in a square pyramidal N4O environment, crystallographically related by a twofold axis, at a distance of 7.24 Angstrom. EPR data provide evidence that the two copper (II) ions, enclosed in the macrocyclic ligand, can be brought closer together by bridging anions. A similar cooperation with the binding of dehydronated 2,6-dimethylphenol is considered to take place to incite the two-electron transfer which leads to the production of polyphenylene ether through the intermediate formation of a phenoxonium cation. (C) 2001 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)16-20
Number of pages5
JournalInorganica Chimica Acta
Volume324
Issue number1-2
Publication statusPublished - 12 Nov 2001

Keywords

  • copper
  • dinuclear
  • macrocycle
  • oxidative coupling
  • catalysis
  • X-RAY STRUCTURE
  • COUPLING POLYMERIZATION
  • COMPLEX
  • DIOXYGEN
  • KINETICS
  • LIGANDS

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