TY  - JOUR
AU  - Yu, Na
AU  - Klepov, Vladislav
AU  - Neumeier, Stefan
AU  - Depmeier, Wulf
AU  - Bosbach, Dirk
AU  - Suleimanov, Evgeny V.
AU  - Alekseev, Evgeny
TI  - Further Insight into Uranium and Thorium Metaphosphate Chemistry and the Effect of Nd$ ^{3+}$ Incorporation into Uranium(IV) Metaphosphate
JO  - European journal of inorganic chemistry
VL  - 2015
IS  - 9
SN  - 1434-1948
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2015-05881
SP  - 1562 - 1568
PY  - 2015
AB  - A tetragonal modification of uranium polymetaphosphate U(PO3)4, a mixed U4+/Nd3+ polymetaphosphate “(U0.62Nd0.38)(PO3)4”, and two new tetraphosphates, Th(P4O12) and U(P4O12), were synthesized. The structures of the obtained materials were characterized by X-ray diffraction and Raman spectroscopy. The presence of Nd in (U0.62Nd0.38)(PO3)4 was proven by energy-dispersive X-ray spectroscopy (EDX), and the measured degree of substitution for U agrees well with the X-ray crystallography results; however, the mechanism of the necessary charge compensation could not be identified. The cation arrangements in the crystal structures of thorium and uranium polymetaphosphates have been studied in terms of Voronoi–Dirichlet polyhedra. Different conformations of the tetraphosphate polyanions were observed in the crystal structures of Th(P4O12) and U(P4O12). The Raman spectrum of a single crystal of Th(P4O12) was recorded, and the bands were assigned.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000351435100010
DO  - DOI:10.1002/ejic.201403098
UR  - https://juser.fz-juelich.de/record/255767
ER  -