Darstellung und Struktur von Ba2AsSe4(OH) · 2H2O / Preparation and Structure of Ba2AsSe4(OH) · 2H2O

Jürgen Kaub
1986 Zeitschrift für Naturforschung. B, A journal of chemical sciences  
Ba2AsSe4(OH)·2H2O 1 has been prepared by the reaction of Ba(OH)2 with As2Se3 in aqueous solution and its structure established by X-ray structural analysis. 1 crystallizes in the m onoclinic system , space group Cm (No. 8 ) with a = 8.992(4), b = 9.967(3). c = 6.340(1) A . ß - 104.51(4). Z = 2. M = 718.5, Dber = 4.34 g-cm-3. In the structure there are isolated AsSe43- tetrahedra with Cs-symmetry and As-Se bond lengths between 2.303 and 2.329 Å. The Ba2+ ions are coordinated by 6 Se and 3 O atoms
doi:10.1515/znb-1986-0407 fatcat:mxj7wypnufa3pldzq4bprhsoju