PbCu3(OH)(NO3)(SeO3)3·1/2H2O und Pb2Cu3O2(NO3)2(SeO3)2: Synthese und Kristallstrukturuntersuchung期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

PbCu3(OH)(NO3)(SeO3)3·1/2H2O und Pb2Cu3O2(NO3)2(SeO3)2: Synthese und Kristallstrukturuntersuchung

Authors:	Herta Effenberger

Affiliation:	(1) Institut für Mineralogie und Kristallographie, Universität Wien, A-1010 Wien, Österreich

Abstract:	Crystals of PbCu₃(OH)(NO₃)(SeO₃)₃·1/2H₂O [a=7.761(3)Å,b=9.478(4)Å,c=9.514(4)Å, =66.94(2)°, =69.83(2)°, =81.83(2)°, space group P,Z=2] and Pb₂Cu₃O₂(NO₃)₂(SeO₃)₂ [a=5.884(2)Å,b=12.186(3)Å,c=19.371(4)Å, space group Cmc2₁,Z=4] were synthesized under hydrothermal conditions. Their crystal structures were refined with three-dimensional X-ray data toR_w=0.033 resp. 0.055. In PbCu₃(OH)(NO₃)(SeO₃)₃·1/2H₂O the Cu atoms are [4+1] and [4+2] coordinated and via SeO₃ groups a three-dimensional atomic arrangement is built up. In Pb₂Cu₃O₂(NO₃)₂(SeO₃)₂ there are $_infty ^2 [{text{Pb}}_{text{2}} {text{Cu}}^{{text{[4]}}} _3 {text{O}}_{text{2}} ({text{SeO}}_{text{2}} )_2 ]$ sheets, which are connected only via Pb-O bonds ranging from 2.98 Å to 3.16 Å.

Keywords:	PbCu₃(OH)(NO₃)(SeO₃)₃· 1/2H₂O Pb₂Cu₃O₂(NO₃)₂(SeO₃)₂ Crystal structure Crystal chemistry
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