In:
Zeitschrift für anorganische und allgemeine Chemie, Wiley, Vol. 637, No. 11 ( 2011-09), p. 1475-1480
Abstract:
Single crystals of γ‐K(UO 2 )(NO 3 ) 3 were prepared from aqueous solutions by evaporation. The crystal structure [orthorhombic, Pbca (61), a = 9.2559(3) Å, b = 12.1753(3) Å, c = 15.8076(5) Å, V = 1781.41(9) Å 3 , Z = 8] was determined by direct methods and refined to R 1 = 0.0267 on the basis of 3657 unique observed reflections. The structure is composed of isolated anionic uranyl trinitrate units, [(UO 2 )(NO 3 ) 3 ] – , that are linked through eleven‐coordinated K + cations. Both known polymorphs of K(UO 2 )(NO 3 ) 3 (α‐ and γ‐phases) can be considered as based upon sheets of isolated complex [(UO 2 )(NO 3 ) 3 ] – ions separated by K + cations. The existence of polymorphism in the two K[UO 2 (NO 3 ) 3 ] polymorphs is due to the different packing modes of uranyl trinitrate clusters that adopt the same two‐dimensional but different three‐dimensional arrangements.
Type of Medium:
Online Resource
ISSN:
0044-2313
,
1521-3749
DOI:
10.1002/zaac.v637.11
DOI:
10.1002/zaac.201100200
Language:
English
Publisher:
Wiley
Publication Date:
2011
detail.hit.zdb_id:
201094-X
detail.hit.zdb_id:
1481139-X
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