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  • 1
    ISSN: 0044-2313
    Keywords: Iron(III) ; coordination chemistry ; electronic spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of N-Phenolate-functionalized Macrocycles of 1,4,7-Triazacyclononane and of 1-Oxa-4,7-diazacyclononane and their Coordination Chemistry with Iron(III)Six new tetra- or pentadentate, N-phenolate functionalized, pendant, arm macrocyclic containing a 1,4,7-traizacyclononane or a 1-oxa-4,7-diazacyclononane backbone have been synthesized and their coordination chemistry with iron(III) has been investigated. Electronic spectra of these octahedral high-spin FeIII complexes have been measured. The Phenolate-to-iron(III) charge transfer band has been studied as a function of the number of coordinated phenolate residues (1,2, or 3) and of the substituents at the phenolate arms. The dinuclear complex [L27Fe2(μ-O2CPh)](C1O)4)3 has been synthesized where the two FeIII centres are connected via a symmetric μ-benzoato bridge and two phenolate oxygen atoms (L7 = N-(2-hydroxybenzyl)-1,4,7-triazacyclononane).
    Notes: Ausgehend von den neungliedrigen Makrocyclen 1,4,7-Triazacylononan und 1-Oxa-4,7-diazacyclononan wurden sechs neue, fünf- und vierzähnige N-phenolat-funktionalisierte Liganden synthetisiert und ihre Komplexchemie mit Eisen(III) untersucht. Die UV-vis Spektren der oktaedrischen, high-spin Eisen(III)-Komplexe wurden vermessen, und die Phenolat→Eisen(III) Charge-Transfer-Bande als Funktion der Anzahl koordinierter Phenolatliganden (1, 2 oder 3) und der Substituenten am Phenolatrest studiert. Der dinukleare Komplex [L27Fe2(μ-O2CPh)](C1O4)3, in dem die beiden FeIII- Zentren über eine symmetrische Benzoatbücke sowie über verbrückende Phenolatsauerstoffatome miteinander verknüpft sind, wurde ebenfalls hergestellt (L7 = N-(2-Hydroxybenzy1-1,4,7-Triazaxyxlononan.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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