Superatom Paramagnetism in Au 102 (SR) 44 1-/0/1+/2+ Oxidation States

Gold nanoclusters show distinctive magnetic properties and electronic structure. Nanoclusters of sufficiently small size restructure geometrically to stabilize electronically (e.g., a Jahn-Teller effect), whereas geometric distortion may not be possible in larger nanoclusters. In this work, the char...

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Bibliographic Details
Published in:Inorganic chemistry 2020-03, Vol.59 (6), p.3509-3512
Main Authors: Window, Phillip S, Ackerson, Christopher J
Format: Article
Language:English
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Summary:Gold nanoclusters show distinctive magnetic properties and electronic structure. Nanoclusters of sufficiently small size restructure geometrically to stabilize electronically (e.g., a Jahn-Teller effect), whereas geometric distortion may not be possible in larger nanoclusters. In this work, the charge-state-dependent magnetism of the Au (SPh) nanocluster is investigated through Evans method NMR measurements. The 2+ charge state is shown as paramagnetic. This suggests that the nanocluster does not distort geometrically to pair electrons. Because the nanocluster lies within the transition range of molecule-like to bulk-like properties, this suggests that the geometric stabilization that becomes important in larger "magic number clusters" may be resistant to electronically driven distortions observed in smaller nanoclusters.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.9b02787