Einkristallstrukturbestimmungen an KBiO2 und RbBiO2 und ein kristallchemischer Vergleich der Alkalimetallbismutate(III) vom Typ MBiO2 (M = Na, K, Rb, Cs)
Abstract
deEinkristalle von KBiO2 (farblos) und RbBiO2 (farblos) wurden durch Festkörperreaktion der binären Oxide erneut dargestellt. In beiden mit NaBiO2 und CsBiO2 isotypen Verbindungen (C2/c, Z = 4) liegen nach den Ergebnissen der Röntgenstrukturanalyse (KBiO2: a = 783,13(9); b = 790,92(10); c = 596,86(8) pm; β = 124,81(1)°; 445 Diffraktometerdaten; R1 = 0,027; wR2 = 0,069; RbBiO2: a = 806,20(5); b = 838,88(4); c = 598,14(4) pm; β = 123,68(1)°; 289 Diffraktometerdaten; R1 = 0,040; wR2 = 0,101) 
[BiO2]-Ketten entlang [0 0 1] vor.
Abstract
enSingle Crystal Structure Determination on KBiO2 and RbBiO2 and a Crystal Chemical Comparison of MBiO2 (M = Na, K, Rb, Cs)
Single crystals of KBiO2 (colourless) and RbBiO2 (colourless) were obtained by solid state reaction of the respective binary metal oxides. Both crystal structures (KBiO2: C2/c; a = 783.13(9), b = 790.92(1), c = 596.86(8) pm, β = 124.81(1)°; Z = 4; 445 diffractometer data; R1 = 0.027; wR2 = 0.069; RbBiO2: C2/c; a = 806.20(5), b = 838.88(4), c = 598.14(4) pm, β = 123.68(1)°; Z = 4; 289 diffractometer data; R1 = 0.040; wR2 = 0.101) reveal infinite 
[BiO2]-chains extending along the [0 0 1] direction. The compounds are isostructural with NaBiO2 and CsBiO2.
