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A hierarchically assembled 88-nuclei silver-thiacalix[4]arene nanocluster.


ABSTRACT: Thiacalix[4]arenes as a family of promising ligands have been widely used to construct polynuclear metal clusters, but scarcely employed in silver nanoclusters. Herein, an anion-templated Ag88 nanocluster (SD/Ag88a) built from p-tert-butylthiacalix[4]arene (H4TC4A) is reported. Single-crystal X-ray diffraction reveals that C4-symmetric SD/Ag88a resembles a metal-organic super calix comprised of eight TC4A4- as walls and 88 silver atoms as base, which can be deconstructed to eight [CrO4@Ag11(TC4A)(EtS)4(OAc)] secondary building units arranged in an annulus encircling a CrO42- in the center. Local and global anion template effects from chromates are individually manifested in SD/Ag88a. The solution stability and hierarchical assembly mechanism of SD/Ag88a are studied by using electrospray mass spectrometry. The Ag88 nanocluster represents the highest nuclearity metal cluster capped by TC4A4-. This work not only exemplify the specific macrocyclic effects of TC4A4- in the construction of silver nanocluster but also realize the shape heredity of TC4A4- to overall silver super calix.

SUBMITTER: Wang Z 

PROVIDER: S-EPMC6965622 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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A hierarchically assembled 88-nuclei silver-thiacalix[4]arene nanocluster.

Wang Zhi Z   Su Hai-Feng HF   Gong Yi-Wen YW   Qu Qing-Ping QP   Bi Yan-Feng YF   Tung Chen-Ho CH   Sun Di D   Zheng Lan-Sun LS  

Nature communications 20200116 1


Thiacalix[4]arenes as a family of promising ligands have been widely used to construct polynuclear metal clusters, but scarcely employed in silver nanoclusters. Herein, an anion-templated Ag<sub>88</sub> nanocluster (SD/Ag88a) built from p-tert-butylthiacalix[4]arene (H<sub>4</sub>TC4A) is reported. Single-crystal X-ray diffraction reveals that C<sub>4</sub>-symmetric SD/Ag88a resembles a metal-organic super calix comprised of eight TC4A<sup>4-</sup> as walls and 88 silver atoms as base, which c  ...[more]

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