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RESEARCH PRODUCT
Endohedral Mixed Aggregates: Sodium Alkoxide Cages with Organic or Inorganic Central Anions and Variable Hull.
Jan KlettErkam Cebisubject
540 Chemistry and allied sciencesMetalationSodiumalkoxidechemistry.chemical_elementHot Paper010402 general chemistry01 natural sciencesCatalysischemistry.chemical_compoundPolymer chemistryNucleophilic substitutionReactivity (chemistry)isotopic labelingsodiumFull Paper010405 organic chemistryOrganic ChemistryaggregationGeneral ChemistryFull PapersAlkali metal0104 chemical scienceschemistry540 ChemieAlkoxideHalogenAlkoxy groupcage compoundsdescription
Abstract Alkali metal alkoxides are widely used in chemistry due to their Brønsted basic and nucleophilic properties. Potassium alkoxides assist alkyllithium in the metalation of hydrocarbons in Lochmann‐Schlosser‐bases. Both compounds form mixed aggregates, which enhance the thermal stability, solubility, and the basic reactivity of these mixtures. A very unusual spherical mixed alkoxy aggregate was discovered by Grützmacher et al., where a central dihydrogen phosphide anion is surrounded by a highly dynamic shell of thirteen sodium atoms and a hull of twelve tert‐butoxide groups. This structural motif can be reproduced by a reaction of trimethylsilyl compounds of methane, halogens, or pseudo‐halogens with excess sodium tert‐butoxide. A nucleophilic substitution releases the corresponding anion, which is then encapsulated by the sodium alkoxide units. The compounds are soluble in hydrocarbon solvents, enabling studies of solutions by high‐resolution NMR spectroscopy and IR/Raman studies of the crystalline materials.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-03-12 | Chemistry (Weinheim an der Bergstrasse, Germany) |