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The ligands were characterized by means of NMR spectroscopy, mass\u2010spectrometry, and DFT calculations and X\u2010ray crystallography studies for <jats:bold>RosCat1<\/jats:bold>. The influence of the amide linkage on the photophysical properties of the fluorescent ligands was assessed in different solvents and showed a higher fluorescence quantum yield for <jats:bold>RosCat1<\/jats:bold>. The coordination chemistry of these ligands with a Fe<jats:sup>III<\/jats:sup> center has been rationalized by mass\u2010spectrometric analysis and semiempirical calculations. Octahedral Fe<jats:sup>III<\/jats:sup> complexes were obtained by the chelation of three <jats:bold>RosCat1<\/jats:bold> or <jats:bold>RosCat2<\/jats:bold> ligands. Interestingly, the unconventional amide connectivity in <jats:bold>RosCat1<\/jats:bold> imposes the formation of an eight\u2010membered ring on the chelate complex through a \u201csalicylate\u2010type\u201d mode of coordination.<\/jats:p>","DOI":"10.1002\/chem.201502093","type":"journal-article","created":{"date-parts":[[2015,9,7]],"date-time":"2015-09-07T06:42:00Z","timestamp":1441608120000},"page":"15692-15704","source":"Crossref","is-referenced-by-count":8,"title":["The Influence of the Amide Linkage in the Fe<sup>III<\/sup>\u2010Binding Properties of Catechol\u2010Modified Rosamine Derivatives"],"prefix":"10.1002","volume":"21","author":[{"given":"Carla","family":"Queir\u00f3s","sequence":"first","affiliation":[]},{"given":"Andreia","family":"Leite","sequence":"additional","affiliation":[]},{"given":"Maria","family":"G.\u2005M. 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