Journal
DALTON TRANSACTIONS
Volume 48, Issue 42, Pages 15888-15895Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9dt03008e
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Funding
- National Natural Science Foundation of China [1971118, 21722106]
- EPSRC through Centre for Doctoral Training, Theory and Modelling in Chemical Sciences [EP/L015722/1]
- Radcliffe scholarship fund at University College, Oxford
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A new Zintl cluster, [(Ni@Sn-9)In(Ni@Sn-9)](5-), has been isolated in two distinct isomeric forms, one where both Ni@Sn-9 units are coordinated to the bridging In atom in an eta(3)- mode, the other where one is eta(3)- and the other eta(4)-. Density functional theory indicates that the energetic separation between these two structures is minimal, suggesting that crystal packing plays a decisive role in the structural chemistry. A comparison of the electronic structure of [(Ni@Sn-9)In(Ni@Sn-9)](5-) with [(Ni@Ge-9)Ni(Ni@Ge-9)](4-), which has four fewer valence electrons, sheds some light on possible mechanisms that lead to the fusion of cluster fragments.
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