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Structural Chemistry of an n = 1 Member of the Ruddlesden–Popper Sr n +1 (Co 0.5 Ta 0.5 ) n O 3 n +1 Homologous Series: Sr 4 CoTaO 8
Author(s) -
Boulahya Khalid,
Parras Marina,
GonzálezCalbet José María
Publication year - 2007
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200700047
Subject(s) - chemistry , homologous series , perovskite (structure) , selected area diffraction , crystallography , series (stratigraphy) , block (permutation group theory) , group (periodic table) , salt (chemistry) , stereochemistry , inorganic chemistry , diffraction , organic chemistry , mathematics , optics , biology , paleontology , physics , geometry
A layered perovskite related compound with the Sr 4 CoTaO 8 composition was isolated. This material constitutes the n = 1 member of the recently reported [Sr n +1 (Co 0.5 Ta 0.5 ) n O 3 n +1 ] Ruddlesden–Popper series. XRPD, SAED and HREM reveal that this compound crystallizes as a K 2 NiF 4 ‐type with space group I 4/ mmm . The structure is formed by one Sr 2 CoTaO 6 perovskite block that intergrows with one SrO rock salt layer; no ordering between the Co and Ta cations was established. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)