AI Article Synopsis
- The paramagnetic cluster [Cu Al ](Cp*) is formed from [CuMes] and [AlCp*], featuring an all-hydrocarbon ligand-stabilized structure.
- This cluster has a Mackay-type nested icosahedral shape and a unique 67-electron superatom configuration with three unpaired electrons in weakly antibonding states.
- The presence of twelve Cp* ligands protects the structure from reactivity, allowing for temperature-independent magnetism due to the formation of a conduction band.
Article Abstract
The paramagnetic cluster [Cu Al ](Cp*) was obtained from the reaction of [CuMes] and [AlCp*] (Cp*=η -C Me ; Mes=mesityl). This all-hydrocarbon ligand-stabilized M magic atom-number cluster features a Mackay-type nested icosahedral structure. Its open-shell 67-electron superatom configuration is unique. Three unpaired electrons occupy weakly antibonding jellium states. The situation prefigures the formation of a conduction band, which is in line with the measured temperature-independent magnetism. Steric protection by twelve Cp* ligands suppresses the intrinsic polyradicalar reactivity of the Cu Al core.
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| http://dx.doi.org/10.1002/anie.201806039 | DOI Listing |
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