Ammonium uranyl carbonates - Complex compounds with variable coordination number?

Autor:	Václav Baran
Rok vydání:	1982
Předmět:	chemistry.chemical_compound chemistry Coordination number Inorganic chemistry Ammonium General Chemistry Uranyl
Zdroj:	Collection of Czechoslovak Chemical Communications. 47:1269-1281
ISSN:	1212-6950 0010-0765
DOI:	10.1135/cccc19821269
Popis:	A series of ammonium uranyl carbonate (AUC) solid samples were prepared. Their chemical composition varied systematically and corresponded to the formula (NH4)x[UO2(CO3)y] with molar coefficients from x = 4.0 and y = 3.0 to 1.1 and 1.3, resp. The first samples of this series, with x in the range 4.0-2.7 and y in the range 3.0-2.3, revealed identical IR spectra as well as X-ray patterns, in contrast to the other ones. A reliable explanation of this fact is not at hand, one of the possibilities being the variable coordination number of the uranyl central ion. IR spectra of AUC and its sodium analogue were confronted, too, with the conclusion that architecture of both complexes is the same but with distinct quantitative differences.
Databáze:	OpenAIRE
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