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Issue 14, 2012
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Ag44(SR)304−: a silver–thiolate superatom complex

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Intensely and broadly absorbing nanoparticles (IBANs) of silver protected by arylthiolates were recently synthesized and showed unique optical properties, yet question of their dispersity and their molecular formulas remained. Here IBANs are identified as a superatom complex with a molecular formula of Ag44(SR)304− and an electron count of 18. This molecular character is shared by IBANs protected by 4-fluorothiophenol or 2-naphthalenethiol. The molecular formula and purity is determined by mass spectrometry and confirmed by sedimentation velocity-analytical ultracentrifugation. The data also give preliminary indications of a unique structure and environment for Ag44(SR)304−.

Graphical abstract: Ag44(SR)304−: a silver–thiolate superatom complex

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The article was received on 31 Mar 2012, accepted on 04 Jun 2012 and first published on 15 Jun 2012

Article type: Paper
DOI: 10.1039/C2NR30773A
Nanoscale, 2012,4, 4269-4274

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    Ag44(SR)304−: a silver–thiolate superatom complex

    K. M. Harkness, Y. Tang, A. Dass, J. Pan, N. Kothalawala, V. J. Reddy, D. E. Cliffel, B. Demeler, F. Stellacci, O. M. Bakr and J. A. McLean, Nanoscale, 2012, 4, 4269
    DOI: 10.1039/C2NR30773A

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