Compartmentalization of alkaline-earth metals in salen-type Cu- and Ni-complexes in solution and in the solid state
- Finelli, Alba Department of Chemistry, University of Fribourg, Switzerland
- Hérault, Nelly Department of Chemistry, University of Fribourg, Switzerland
- Crochet, Aurélien Department of Chemistry, University of Fribourg, Switzerland
- Fromm, Katharina M. Department of Chemistry, University of Fribourg, Switzerland
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30.06.2019
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.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Chimie
- Language
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- English
- Classification
- Chemistry
- License
- License undefined
- Identifiers
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- RERO DOC 326954
- DOI 10.1021/acsomega.9b00365
- Persistent URL
- https://folia.unifr.ch/unifr/documents/308084
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