Structure and Bonding in MPb₅^– (M = Cu, Ag, and Au): A Combined Investigation by Theoretical Calculations and Photoelectron Imaging Spectroscopy

Abstract

Bimetallic clusters of MPb 5− (M = Cu, Ag, and Au) have been studied using density functional theory and photoelectron imaging spectroscopy. These anionic clusters and their neutrals were determined to be a Pb 5 trigonal bipyramid with the coinage metal atom on its triangular facet. This structure of each MPb 5 − or MPb 5 was found to be more than 0.5 eV lower than other structural candidates and that of each

Iodization Threshold in Size-Dependent Reactions of Lead Clusters Pbn+ with Iodomethane

“…Among others, Tang et al − found that lead clusters react with alkene, acetone and benzene, enabling the activation of the C–C and C–H bonds through different reaction pathways. Also, bimetallic clusters of MPb 5 – (M = Cu, Ag, and Au) have been studied, utilizing photoelectron spectroscopy, shedding light on relativistic electronic effects in clusters containing heavy atoms . Besides, the transition from covalent to metallic bonding in the Pb n clusters has likewise attracted interest. , It was even proposed that Pb particles could be solid state for small clusters while liquid for larger ones under condensation of lead atoms in cold He gas. , In spite of the existing literature on this subject, it is fair to say that the size-dependent properties of Pb n + clusters and structural implications for their chemical properties are still open questions.…”

“…Also, bimetallic clusters of MPb 5 − (M = Cu, Ag, and Au) have been studied, utilizing photoelectron spectroscopy, shedding light on relativistic electronic effects in clusters containing heavy atoms. 45 Besides, the transition from covalent to metallic bonding in the Pb n clusters has likewise attracted interest. 34,46 It was even proposed that Pb particles could be solid state for small clusters while liquid for larger ones under condensation of lead atoms in cold He gas.…”