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Layered Quaternary Germanides-Synthesis and Crystal and Electronic Structures of AELi(2)In(2)Ge(2) (AE = Sr, Ba, Eu)
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK). University of Delaware, United States.ORCID iD: 0000-0002-0537-4234
Number of Authors: 22019 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 58, no 12, p. 7895-7904Article in journal (Refereed) Published
Abstract [en]

Three new quaternary germanides with the composition AELi(2)In(2)Ge(2) (AE = Sr, Ba, Eu) have been synthesized and structurally characterized. The layered crystal structure of these phases features homoatomic In-In bonding, but there are no direct Ge-Ge bonds. Such a crystallographic arrangement can be regarded as an ordered quaternary derivative of the CaCu4P2 structure (trigonal syngony, Pearson code hR7). Comprehensive analysis of the structural genealogy suggests relationships with the structures of other layered pnictides and chalcogenides, which are discussed. Partitioning of the available valence electrons and the assignment of the formal charges indicate that the composition of the new germanides is charge-balanced. First-principles calculations and electrical transport measurements indicate poor metallic behavior, resulting from significant hybridization of the electronic states.

Place, publisher, year, edition, pages
2019. Vol. 58, no 12, p. 7895-7904
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-171125DOI: 10.1021/acs.inorgchem.9b00588ISI: 000472241400031PubMedID: 31140792OAI: oai:DiVA.org:su-171125DiVA, id: diva2:1343570
Available from: 2019-08-17 Created: 2019-08-17 Last updated: 2019-12-04Bibliographically approved

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