ISSN:
0044-2313
Keywords:
Sodium tetraamido aluminate
;
sodium tetraamido gallate
;
crystal structure
;
IR spectra
;
thermal behaviour
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Redetermination of Structure and Properties of the Isotypic Sodium Tetraamido Metallates of Aluminium and GalliumCrystals for x-ray structure determination of NaAl(NH2)4 and NaGa(NH2)4 were obtained by the reaction of the metals with ammonia in autoclaves at 100°C and P(NH3) = 60 bar within 7 days. The compounds crystallize isotypic in the space group P21/c with Z = 4 NaAl(NH2)4 a = 7.328(2) Å, b = 6.047(2) Å, c = 13.151(3) Å, β = 94.04(1)° NaGa(NH2)4 a = 7.4087(8) Å, b = 6.0917(5) Å, c = 12.855(2) Å, β = 92.10(1)°The structures were refined inclusively all H-positions of the amide ions. The ternay amides are furthermore characterized by their IR spectra and their thermal behaviour.
Notes:
Für röntgenographische Strukturbestimmungen geeignete Kristalle von NaAl(NH2)4 und NaGa(NH2)4 wurden durch Umsetzung der Metalle mit NH3 in Autoklaven bei 100°C und P(NH3) = 60 bar in 7d erhalten. Die Verbindungen kristallisieren isotyp in der Raumgruppe P21/c mit Z = 4 NaAl(NH2)4 a = 7,328(2) Å, b = 6,047(2) Å, c = 13,151(3) Å, β = 94,04(1)° NaGa(NH2)4 a = 7,4087(8) Å, b = 6,0917(5) Å, c = 12,855(2) Å, β = 92,10(1)°Die Strukturen wurden einschließlich aller H-Lagen der NH2--Ionen bestimmt. Die ternären Amide werden außerdem IR-spektroskopisch und bezüglich ihres thermischen Verhaltens charakterisiert.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/zaac.19936190224
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