Neumaier, Marco published the artcileKinetics of Intercluster Reactions between Atomically Precise Noble Metal Clusters [Ag25(DMBT)18]– and [Au25(PET)18]– in Room Temperature Solutions, Name: 2-Phenylethanethiol, the publication is Journal of the American Chemical Society (2021), 143(18), 6969-6980, database is CAplus and MEDLINE.
The kinetics of intercluster metal atom exchange reactions between solvated [Ag25(DMBT)18]– and [Au25(PET)18]– (DMBT and PET are 2,4-dimethylbenzenethiol and 2-phenylethanethiol, resp., both C8H10S) were probed by electrospray ionization mass spectrometry and computer-based modeling. Anion mass spectra and collision induced dissociation (CID) measurements show that both cluster monomers and dimers are involved in the reactions. We have modeled the corresponding kinetics assuming a reaction mechanism in which metal atom exchange occurs through transient dimers. Our kinetic model contains three types of generic reactions: dimerization of monomers, metal atom exchange in the transient dimers, and dissociation of the dimers to monomers. There are correspondingly 377 discrete species connected by in total 1302 reactions (i.e., dimerization, dissociation and atom exchange reactions) leading to the entire series of monomeric and dimeric products [AgmAu25-m]– (m = 1-24) and [AgmAu50-m]2- (m = 0-50), resp. The rate constants of the corresponding reactions were fitted to the exptl. data, and good agreement was obtained with exchange rate constants which scale with the probability of finding a silver or gold atom in the resp. monomeric subunit of the dimer, i.e., reflecting an entropic driving force for alloying. Allowing the dimerization rate constant to scale with increasing gold composition of the resp. reactants improves the agreement further. The rate constants obtained are phys. plausible, thus strongly supporting dimer-mediated metal atom exchange in this intercluster reaction system.
Journal of the American Chemical Society published new progress about 4410-99-5. 4410-99-5 belongs to alcohols-buliding-blocks, auxiliary class Thiol,Benzene, name is 2-Phenylethanethiol, and the molecular formula is C8H10S, Name: 2-Phenylethanethiol.
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