Synthesis, structure, and stability in acid of copper(II) and zinc(II) complexes of cross-bridged tetraazamacrocycles

Timothy J. Hubin, Nathaniel W. Alcock, Martha D. Morton, Daryle H. Busch

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44 Scopus citations

Abstract

New copper(II) and zinc(II) complexes of cross-bridged tetraazamacrocyclic ligands derived from 1,4,8,11-tetraazacyclotetradecane (cyclam), 1,4,7,10-tetraazacyclotridecane ([13]aneN4), and 1,4,7,10-tetraazacyclododecane (cyclen) have been synthesized. The X-ray crystal structures of the two cyclen-derived complexes have been determined and show both metal ions to be in distorted octahedral environments with the ligand in a cis-folded conformation. The bridged-ligand complexes are remarkably stable kinetically under harsh acidic conditions, as seen from their dissociation reactions. The electrochemical and spectroscopic properties of the Cu2+ complexes have also been investigated.

Original languageEnglish (US)
Pages (from-to)33-40
Number of pages8
JournalInorganica Chimica Acta
Volume348
DOIs
StatePublished - May 15 2003

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Keywords

  • Bridged macrocycles
  • Complex stability
  • Macrobicycle
  • Tetraazamacrocycles

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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