[(Me3Si)Si]3EtGe9Pd(PPh3), a Pentafunctionalized Deltahedral Zintl Cluster: Synthesis,Structure, and Solution Dynamics |
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| Authors: | Dr. Feng Li Dr. Alvaro Muñoz‐Castro Prof. Slavi C. Sevov |
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| Affiliation: | 1. http://www.nd.edu/～ssevov;2. Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, USA;3. Lab. de Química InorgánicayMateriales Moleculares, Universidad Autonoma de Chile, Santiago, Chile |
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| Abstract: | The title compound, which has a ten‐atom deltahedral cluster core of Ge9Pd, was synthesized through insertion of Pd(PPh3) into the tetrasubstituted nona‐germanium cluster [(Me3Si)Si]3EtGe9 through a reaction of the latter with Pd(PPh3)4. This first reaction of neutral tetrasubstituted nine‐atom clusters shows that they retain reactivity despite their neutral charge. The Ge9Pd core is the first that incorporates a 5‐connected transition metal other than from Group VI, a noble metal in this case. Single‐crystal X‐ray diffraction shows that the ten‐atom core is a closo‐cluster with the expected shape of a bicapped square antiprism. 1H and 13C NMR spectroscopy show that, in contrast to the parent tetra‐substituted [(Me3Si)Si]3EtGe9, the new compound does not exhibit dynamics. Relativistic DFT calculations are used to explain the differences. |
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| Keywords: | cluster compounds germanium molecular dynamics palladium Zintl anions |
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