Crystal chemistry of two monoclinic modifications of Bi₂Cu(SeO₃)₄

Autor(en)

Herta Silvia Effenberger

Abstrakt

Two modifications of hydrothermally synthesized Bi2Cu(SeO3)4 crystallize in space group P21/c: a 4.440(1), b 15.852(4), c 8.094(2) .ANG., beta 94.95(3)° and a 10.513(2), b 7.224(3), c 8.160(3) .ANG., beta 110.60(2)°; Z = 2. The crystal structures were refined from 2067 obsd. x-ray reflections to R = 0.029, Rw = 0.033 and from 2100 obsd. reflections to R = 0.046, Rw = 0.037. At. coordinates are given. The irregular coordination around the BiIII atoms is caused by the lone-pair electrons, the CuII atoms are planar [4] coordinated; the SeIVO3 groups form the usual trigonal pyramids. Distinguishing features are Bi2(SeO3)2 layers, which are interconnected in the two structures by Cu(SeO3)2 chains and Cu(SeO3)2 layers, resp.

Organisation(en)

Institut für Mineralogie und Kristallographie

Journal

Acta Chemica Scandinavica

Band

50

Seiten

967 - 972

Anzahl der Seiten

6

ISSN

0904-213X

Publikationsdatum

1996

Peer-reviewed

Ja

ÖFOS 2012

105113 Kristallographie, 104021 Strukturchemie, 104011 Materialchemie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/crystal-chemistry-of-two-monoclinic-modifications-of-bi2cuseo34(b9cb51dc-46cb-4187-91a7-27d85875594f).html