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Synthesis, and Crystal and Electronic Structures, of the Titanium-Rich Bismuthides AE3Ti8Bi10(AE = Sr, Ba, Eu)

Journal Article · · Inorganic Chemistry
 [1];  [2]
  1. Univ. of Delaware, Newark, DE (United States); University of Delaware
  2. Univ. of Delaware, Newark, DE (United States)

Three isotypic compounds with the chemical formula AE3Ti8Bi10 (AE = Sr, Ba, Eu) have been obtained via both high-temperature solid state and flux growth reactions. Their crystal structure, representing a new type (space group P63/mmc, Pearson symbol hP42), features an open framework composed of interlinked TiBi5 square pyramids and TiBi6 octahedra. The Ti–Bi substructure is penetrated by infinite columns of face-sharing AE6 polyhedra centered by Bi atoms. First-principle calculations and physical property measurements indicate metallic behavior and absence of localized magnetic moments on the Ti atoms. Analysis of the chemical bonding reveals strong Ti–Bi and Ti–Ti bonds. Finally, the latter demonstrate classic two-center, as well as multicenter interactions.

Research Organization:
Univ. of Delaware, Newark, DE (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0008885
OSTI ID:
1595059
Journal Information:
Inorganic Chemistry, Journal Name: Inorganic Chemistry Journal Issue: 5 Vol. 58; ISSN 0020-1669
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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