ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Nd1.5Sr0.5(Cu, Al)O4 and Nd2(Cu, Ni)O4, a Contribution about the Coordination of Cu2+ PositionsThis contribution deals with X-ray single crystal investigations of (I) Nd1.5Sr0.5(Cu, Al)O4 and (II) Nd2(Cu, Ni)O4. I belongs to the K2NiF4-typ [a = 3.7338; c = 12.7378 Å; space group D4h17-14/mmm; Z = 2]. II show Cu2+ and Ni2+ with statistic distribution and orthorhombic distorted K2NiF4-type [a = 5.3653; b = 5.4364; c = 12.4599 Å; space group C2v17-Cc2a; Z = 4]. I and II loose the originally planar CuO4 polyhedra of the Nd2CuO4 type.
Notes:
Es wird über Röntgenbeugungsuntersuchungen an Einkristallen von (I) Nd1,5Sr0,5(Cu, Al)O4 und (II) Nd2(Cu, Ni)O4 berichtet. I kristallisiert im K2NiF4-Typ [a = 3,7338; c = 12,7378 Å; Raumgruppe D4h17-I4/mmm; Z = 2]. II enthält Cu2+ und Ni2+ statistisch verteilt, mit orthorhombischer Verzerrung des K2NiF4-Typs [a = 5,3653; b = 5,4364; c = 12,4599 Å; Raumgruppe C2v17-Cc2a; Z = 4]. In I und II ist die ursprünglich planare Koordination von Cu2+ des Nd2CuO4-Typs verlorengegangen.
Additional Material:
4 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19895730102
