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Title: Electron and Spin Delocalization in [Co 6 Se 8 (PEt 3 ) 6 ] 0/+1 Superatoms
Abstract Molecular clusters can function as nanoscale atoms/superatoms, assembling into superatomic solids, a new class of solid‐state materials with designable properties through modifications on superatoms. To explore possibilities on diversifying building blocks, here we thoroughly studied one representative superatom, Co6Se8(PEt3)6. We probed its structural, electronic, and magnetic properties and revealed its detailed electronic structure as valence electrons delocalize over inorganic [Co6Se8] core while ligands function as an insulated shell.59Co SSNMR measurements on the core and31P,13C on the ligands show that the neutral Co6Se8(PEt3)6is diamagnetic and symmetric, with all ligands magnetically equivalent. Quantum computations cross‐validate NMR results and reveal degenerate delocalized HOMO orbitals, indicating aromaticity. Ligand substitution keeps the inorganic core nearly intact. After losing one electron, the unpaired electron in [Co6Se8(PEt3)6]+1is delocalized, causing paramagnetism and a delocalized electron spin. Notably, this feature of electron/spin delocalization over a large cluster is attractive for special single‐electron devices.  more » « less
Award ID(s):
1913885 1751949
PAR ID:
10493399
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ; ; ; ; ;
Corporate Creator(s):
Editor(s):
ChemPhysChem
Publisher / Repository:
ChemPhysChem
Date Published:
Journal Name:
ChemPhysChem
Edition / Version:
1
Volume:
25
Issue:
2
ISSN:
1439-4235
Page Range / eLocation ID:
2270 to 2278
Subject(s) / Keyword(s):
superatoms solid state NMR magnetism
Format(s):
Medium: X Size: 1.2M Other: pdf/A
Size(s):
1.2M
Sponsoring Org:
National Science Foundation
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