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Halides-Promoted Construction and Assembly of Copper Nanoclusters Capped by Bulky Zwitterionic Ligands.

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Title: Halides-Promoted Construction and Assembly of Copper Nanoclusters Capped by Bulky Zwitterionic Ligands.
Authors: Jia, J. -W.1 (AUTHOR), Ren, Z.2 (AUTHOR), Luo, P.1 (AUTHOR) 949337411@qq.com, Kong, Z.2 (AUTHOR) 949337411@qq.com, Wang, Z. -Y.2 (AUTHOR), Dong, X. -Y.1 (AUTHOR)
Source: Journal of Structural Chemistry. Jun2026, Vol. 67 Issue 6, p1399-1408. 10p.
Subjects: Halides, Copper clusters, X-ray diffraction, Surface passivation, Nanocrystal synthesis, Thermochromism, Ligands (Chemistry)
Abstract: Surface-passivating agents are pivotal in determining the structures and associated properties of monolayer-protected metal nanoclusters (NCs). Herein, by utilizing bulky zwitterionic sulfur-containing ligands, namely (C6H5)3PCH2CH2CH2SNaBr (NaL∙Br) and along with halides-induced tactics, we isolated two novel copper NCs Cu14L6Br12Cl2 (1), Cu15L6BrI14 (2) as well as an assembly compound [Cu16.5L6Br16.5]n (3). X-ray diffraction analysis reveals that compound 3 is formed through the assembly of two infinite 1D chains, composed of monomers Cu14L6Br14 and Cu16L6Br16 respectively. Compounds 1, 2 and the monomers of 3 possess similar Cu12S6X6 arrangement (X = Cl, Br and I), and all three compounds demonstrate reversible luminescence thermochromic behaviors. The study enriches the structure of zwitterionic ligand-protected copper NCs, and elucidates the regulatory role of halides in modulating structures. [ABSTRACT FROM AUTHOR]
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Abstract:Surface-passivating agents are pivotal in determining the structures and associated properties of monolayer-protected metal nanoclusters (NCs). Herein, by utilizing bulky zwitterionic sulfur-containing ligands, namely (C6H5)3PCH2CH2CH2SNaBr (NaL∙Br) and along with halides-induced tactics, we isolated two novel copper NCs Cu14L6Br12Cl2 (1), Cu15L6BrI14 (2) as well as an assembly compound [Cu16.5L6Br16.5]n (3). X-ray diffraction analysis reveals that compound 3 is formed through the assembly of two infinite 1D chains, composed of monomers Cu14L6Br14 and Cu16L6Br16 respectively. Compounds 1, 2 and the monomers of 3 possess similar Cu12S6X6 arrangement (X = Cl, Br and I), and all three compounds demonstrate reversible luminescence thermochromic behaviors. The study enriches the structure of zwitterionic ligand-protected copper NCs, and elucidates the regulatory role of halides in modulating structures. [ABSTRACT FROM AUTHOR]
ISSN:00224766
DOI:10.1134/S0022476626060156