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Synthesis and structure of Ba[sub 6]Hf[sub 5]S[sub 16] and Ba[sub 5]Hf[sub 4]S[sub 13]: The n = 5 and 4 members of the A[sub n+1]B[sub n]X[sub 3n+1] Ruddlesden-Popper phases

Journal Article · · Inorganic Chemistry; (United States)
DOI:https://doi.org/10.1021/ic00036a014· OSTI ID:7180992
;  [1];  [2]
  1. Univ. of Maryland, College Park (United States)
  2. Purdue Univ., Lafayette, IN (United States)
Two new Ba/Hf/S phases of formula Ba[sub 5]Hf[sub 4]S[sub 13] and Ba[sub 6]Hf[sub 5]S[sub 16] have been prepared from BaS, Hf, and elemental sulfur at 1,050C in BaCl[sub 2] flux reactions. The compounds are the n = 4 and 5 members of the Ba[sub n+1]Hf[sub n]S[sub 3n+1] series which are rare examples of Ruddlesden-Popper sulfides. The compounds contain perovskite blocks extending infinitely in a and b with double BaS layers and a 0 1/2 0 shift every n layers in c. The Hf-S distances in both compounds average 2.48 (2) [angstrom] with regular HfS[sub 6] octahedra. The 12-coordinate Ba atoms display Ba-S distances averaging 3.49 (2) [angstrom] with the Ba-S distances for the 9-coordinate Ba atoms in the double BaS layers ranging between 3.08 and 3.52 [angstrom].
OSTI ID:
7180992
Journal Information:
Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 31:10; ISSN 0020-1669; ISSN INOCAJ
Country of Publication:
United States
Language:
English