Analogy of the Coordination Chemistry of Alkaline Earth Metal and Lanthanide Ln²⁺ Ions: The Isostructural Zoo of Mixed Metal Cages [IM(OtBu)₄{Li(thf)}₄(OH)] (M=Ca, Sr, Ba, Eu), [MM′₆(OPh)₈(thf)₆] (M=Ca, Sr, Ba, Sm, Eu, M′=Li, Na), and their Derivatives with 1,2-Dimethoxyethane
- Maudez, William Department of Chemistry, University of Basel, Switzerland
- Meuwly, Markus Department of Chemistry, University of Basel, Switzerland
- Fromm, Katharina M. Department of Chemistry, University of Fribourg, Switzerland
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17.07.2007
Published in:
- Chemistry - A European Journal. - 2007, vol. 13, no. 29, p. 8302 - 8316
aggregation
alkaline earth metals
cage compounds
cluster compounds
lanthanides
solid-state structures
English
As previously shown, alkali and alkaline earth metal iodides in nonaqueous, aprotic solvents behave like transition metal halides, forming cis- and trans-dihalides with various neutral O-donor ligands. These compounds can be used as precursors for the synthesis of new mixed alkali/alkaline earth metal aggregates. We show here that Ln²⁺ ions form isostructural cluster compounds. Thus, with LiOtBu, 50 % of the initial iodide can be replaced in MI₂, M=Ca, Sr, Ba, Eu, to generate the mixed-metal alkoxide aggregates [IM(OtBu)₄{Li(thf)}₄(OH)], for which the M***Missing image substitution***OH contacts were investigated by theoretical methods. With M′OPh (M′=Li, Na), a new mixed-metal aryloxide cluster type [MM′₆(OPh)₈(thf)₆] is obtained for M=Ca, Sr, Ba, Sm, Eu. Their stability versus DME (DME=1,2-dimethoxyethane) as bidentate ligand is studied.
- 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 8850
- DOI 10.1002/chem.200700597
- Persistent URL
- https://folia.unifr.ch/unifr/documents/300594
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