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Electron-Poor Polar Intermetallics: Complex Structures, Novel Clusters, and Intriguing Bonding with Pronounced Electron Delocalization

TitleElectron-Poor Polar Intermetallics: Complex Structures, Novel Clusters, and Intriguing Bonding with Pronounced Electron Delocalization
Publication TypeJournal Article
Year of Publication2018
AuthorsLin, QS, Miller, GJ
JournalAccounts of Chemical Research
Volume51
Pagination49-58
Date Published01
Type of ArticleReview
ISBN Number0001-4842
Accession NumberWOS:000423252900007
Keywordsapproximant, au-ga system, building-blocks, chemistry, derivatives, gold, icosahedral quasi-crystal, metal-clusters, phases, sn system, zn system
Abstract

) component together metal/metalloid clusters that mimic the backbones of aromatic hydrocarbon molecules, which give evidence of extensive electronic delocalization and multicenter bonding. Thus, we can identify three distinct, valence electron-poor, polar intermetallic systems that have yielded unprecedented phases adopting novel structures containing complex clusters and intriguing bonding characteristics. In this Account, we summarize our recent specific progress in the developments of novel Au-rich BaAl4-type related structures, shown in the gold-rich grid, lithiation-modulated Ca-etallics containing unprecedented hydrocarbon-like planar Co-Ge metal clusters and pronounced delocalized multicenter bonding. We will focus mainly on novel structural motifs, bonding analyses, and the role of valence electrons for phase stability.

DOI10.1021/acs.accounts.7b00488
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