New Intermediate Phases of the Composition La 2n+2 Cu n+4 O 4n+7  in the LaCuO System: the Crystal Structure and Thermal Stability of La 2 Cu 2 O 5 | Zendy

Norrestam Rolf | Zendy; Nygren Mats | Zendy; Bovin JanOlov | Zendy

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New Intermediate Phases of the Composition La 2n+2 Cu n+4 O 4n+7 in the LaCuO System: the Crystal Structure and Thermal Stability of La 2 Cu 2 O 5

Author(s) -

Norrestam Rolf,

Nygren Mats,

Bovin JanOlov

Publication year - 1991

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.199108641

Subject(s) - homologous series , crystallography , phase (matter) , crystal structure , polyhedron , composition (language) , materials science , thermal , chemistry , mineralogy , physics , combinatorics , thermodynamics , mathematics , linguistics , philosophy , organic chemistry

The structure of the new LaCuO phase, La 2 Cu 2 O 5 , stable at 1075–1100°C, is characterized by La 2 CuO 4 layers two CuO octahedrons wide which share edges with the CuO polyhedrons of the separating “walls”. This construction led to the postulate that a homologous series (La 2n+2 Cu n+4 O 4n+7 ) exists, and besides La 2 Cu 2 O 5 (n = 2), La 8 Cu 7 O 19 (n = 3) has already been prepared and characterized structurally.

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