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Issue 32, 2018
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Co-synthesis of atomically precise nickel nanoclusters and the pseudo-optical gap of Ni4(SR)8

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Abstract

Three sizes of atomically precise tiara-like structural Nin(SR)2n (n = 4, 5 and 6) are co-synthesized by a one-pot method and isolated using thin layer chromatography. The molecular formulas of Ni5(SR)10 and Ni6(SR)12 are determined using matrix-assisted laser desorption ionization mass spectrometry, and the tiara-like structures of Ni4(SR)8 and Ni6(SR)12 are proved using single-crystal X-ray crystallography. Nuclear magnetic resonance shows that Ni5(SR)10 has a similar tiara-like structure too. The electrochemical gap enlarges with the increase of the cluster size, which agrees with the calculated HOMO–LUMO gap and optical gap by TD-DFT, but the experimental optical gap is GO(Ni4(SR)8) > GO(Ni6(SR)12) > GO(Ni5(SR)10) due to Ni4(SR)8 owning a pseudo-optical gap at 2.0 eV.

Graphical abstract: Co-synthesis of atomically precise nickel nanoclusters and the pseudo-optical gap of Ni4(SR)8

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Publication details

The article was received on 21 May 2018, accepted on 16 Jul 2018 and first published on 17 Jul 2018


Article type: Paper
DOI: 10.1039/C8DT02059K
Citation: Dalton Trans., 2018,47, 11097-11103

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    Co-synthesis of atomically precise nickel nanoclusters and the pseudo-optical gap of Ni4(SR)8

    Y. Pan, J. Chen, S. Gong and Z. Wang, Dalton Trans., 2018, 47, 11097
    DOI: 10.1039/C8DT02059K

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