ISSN:
0044-2313
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
On Oxopalladates of Alkali MetalsAccording to X-ray data of single crystals there are: Na2PdO2 (yellow rod-shaped crystals) orthorhombic, a = 3.077, b = 10.359, c = 8.351 Å, Z = 4; dx = 4.60, dpyk = 4.63 g · cm-3. „K2PdO3“ (black square prism) orthorhombic, a = 6.202, b = 9.219, c = 4× 11.372 = 45.48 Å, Z = 24, dx = 3.60, dpyk = 3.50 g · cm-3, and „K6PdO4“ (orange square prism) orthorhombic (pseudotetragonal), a = b = 12.368, c = 13.593 Å, Z = 8, D24 - P212121.„Rb2PdO3“ (black) is isostructural (Guinier data) to „K2PdO3“, a = 7.354, b = 9.605, c = 11.586 Å, dx = 4.58, dpyk = 4.47 g · cm-3. Na2PdO3 exists in another reddish brown form, isostructural to Li2MnO3 (C2h6 - C2/c), a = 5.374, b = 9.309, c = 10.789 Å, β = 99.5°, Z = 8, dx = 5.00, dpyk = 4.73 g · cm-3.
Notes:
Orthorhombisch kristallisieren nach Einkristalldaten Na2PdO2 (gelbe Stäbchen), C2v12-Cmc21 oder D2h17 - Cmcm mit a = 3,077, b = 10,359, c = 8,351 Å, Z = 4, drö = 4,60 und dpyk = 4,63 g · cm-3, „K2PdO3“ (schwarze quadratische Säulen) mit a = 6,202, b = 9,219, c = 4× 11,371 = 45,48 Å, Z = 24, drö = 3,60 und dpyk = 3,50 g · cm-3 und „K6PdO4“ (orangerote quadratische Säulen) (pseudotetragonal) mit a = b = 12,368, c = 13,593 Å, Z = 8, D24 - P212121.„Rb2PdO3“ (schwarz) ist nach Guinier-Daten isotyp mit „K2PdO3“, a = 6,354, b = 9,309, c = 11,586 Å, drö = 4,58 und dpyk = 4,47 g · cm-3. Von Na2PdO3 existiert eine weitere rotbraune Form, die mit Li2MnO3 (C2h6 - C2/c) isotyp ist, a = 5,374, b = 9,309, c = 10,789 Å, β = 99,5°, Z = 8, drö = 5,00 und dpyk = 4, 73 g · cm-3.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19764240103
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