Journal article
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Compartmentalization of alkaline-earth metals in salen-type Cu- and Ni-complexes in solution and in the solid state
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Finelli, Alba
Department of Chemistry, University of Fribourg, Switzerland
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Hérault, Nelly
Department of Chemistry, University of Fribourg, Switzerland
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Crochet, Aurélien
Department of Chemistry, University of Fribourg, Switzerland
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Fromm, Katharina M.
Department of Chemistry, University of Fribourg, Switzerland
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Published in:
- ACS Omega. - 2019, vol. 4, no. 6, p. 10231–10242
English
The precise arrangement of metal ions in type and number by a ligand represents an important challenge in biology as well as in materials science. The preorganization of different metal ions such as alkaline-earth and transition-metal ions is of particular interest for the design of catalysts or precursors of oxides. This study is based on a Ω- shaped salen-derived ligand comprising N2O2 and O2O2 coordination sites. The selective binding of Cu(II) and Ni(II) and alkaline-earth-metal ions is influenced by many factors such as the size of the cation, the solvent, or the counterion. UV–vis and 1H NMR titrations and single-crystal X-ray structures reveal that the obtained complexes tend to adopt different structures in solution compared to the solid state. Mainly discrete motifs with a stoichiometry 1:1 (LM1 to alkaline-earth-metal ions) have been shown to form in the solid state, whereas in solution, the 2:1 complexes are predominant.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Chimie
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Language
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Classification
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Chemistry
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/308084
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