Understanding proton capture and cation-induced dimerization of [Ag29 (BDT)12 ]3- clusters by ion mobility mass spectrometry

Physical Chemistry Chemical Physics : PCCP
Papri ChakrabortyThalappil Pradeep

Abstract

Proton transfer reactions have been a topic of fundamental interest in several areas of chemistry and biology. However, such reactivity has not been explored in detail for nanoscale materials. In this article, we present a unique reaction of an atomically precise monolayer-protected silver nanocluster, [Ag29(BDT)12]3-, with a proton (H+). Under controlled conditions, the strong proton affinity facilitated a complete conversion of the cluster to its protonated form, [Ag29(BDT)12H]2-. Moreover, binding of alkali metal ions (Li+, Na+, K+, Rb+ and Cs+) induced specific structural changes and also favored dimerization of the cluster. In this case, the cations acted as a bridge between the two clusters and the degree of dimerization was specific to the size of the cations. The conformational changes and separation of the alkali-metal ion bound dimers from their respective monomers have been investigated by ion mobility mass spectrometry (IM MS) and tandem mass spectrometric studies. Density functional theory (DFT) calculations have been used to determine the possible structures of the monomers and the dimers. Similar reactivity of the cluster can also be extended to other metal ions. While the present study helps to expand the ion-ch...Continue Reading

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Citations

Mar 7, 2019·Chemical Society Reviews·Xi Kang, Manzhou Zhu
Aug 1, 2019·Physical Chemistry Chemical Physics : PCCP·Keisuke HirataTatsuya Tsukuda
Aug 8, 2020·Chemical Society Reviews·Xi KangRongchao Jin
Nov 12, 2020·Small·Ian D AndersonChristopher J Ackerson
Feb 2, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Jing ZhugeAli Morsali
Apr 17, 2021·The Journal of Chemical Physics·Kiichirou Koyasu, Tatsuya Tsukuda
Jun 18, 2021·Journal of the American Chemical Society·Yuan ZengIndranath Chakraborty
May 27, 2020·ACS Omega·Luigi StagiPlinio Innocenzi

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