Uranyl Halides from Liquid Ammonia: [UO2(NH3)5]Cl2·NH3 and [UO2F2(NH3)3]2·2NH3 and Their Decomposition Products [UO2Cl2(NH3)3] and [UO2F2(NH3)3]
Uranyl Halides from Liquid Ammonia: [UO2(NH3)5]Cl2·NH3 and [UO2F2(NH3)3]2·2NH3 and Their Decomposition Products [UO2Cl2(NH3)3] and [UO2F2(NH3)3]
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液氨中的卤化铀:[UO2(NH3)5]Cl2·NH3 和 [UO2F2(NH3)3]2·2NH3 及其分解产物 [UO2Cl2(NH3)3] 和 [UO2F2(NH3)3]
DOI:
10.1002/zaac.201200127
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
F. Kraus
中科院分区:
文献类型:
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作者:
P. Woidy;A. J. Karttunen;F. Kraus
Uranyl chloride UO2Cl2and uranyl fluoride UO2F2react with dry liquid ammonia under the formation of traffic‐green crystals of pentaammine dioxido uranium(VI) dichloride ammonia (1/1) [UO2(NH3)5]Cl2·NH3(1) and sulfur‐yellow crystals of triammine difluorido dioxido uranium(VI) ammonia (2/2) [UO2F2(NH3)3]2·2NH3(2), respectively. Low‐temperature X‐ray structure analyses on single crystals of the two compounds were conducted. Compound1crystallizes in the orthorhombic space groupCmcmwitha= 12.7865(2),b= 10.5106(2),c= 8.7089(2) Å,V= 1170.45(4) Å3at 123 K withZ= 4. Compound2crystallizes in the orthorhombic space groupPnmawitha= 20.8451(5),b= 9.1267(2),c= 8.3371(2) Å,V= 1586(6) Å3at 123 K withZ= 4. Further investigations on the room‐temperature decomposition products of compounds1and2by Raman and IR spectroscopy, TGA MS and X‐ray powder diffraction measurements and deuteration studies led to the identification of triammine dichlorido dioxido uranium(VI) UO2Cl2(NH3)3(3) and triammine difluorido dioxido uranium(VI) UO2F2(NH3)3(4) in the form of fern‐green and zinc‐yellow powders. Quantum chemical studies at the DFT‐PBE0/TZVP level of theory support the experimental observations andalso show that the O≡U≡O triple bonding in the [UO2F2(NH3)3] molecule of compound2is weaker in comparison to the one in the [UO2(NH3)5]2+dication of compound1.
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DOI:
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发表时间:
2012
期刊:
影响因子:
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作者:
U. Betke;M. Wickleder
通讯作者:
M. Wickleder
DOI:
10.1002/zaac.201100200
发表时间:
2011
期刊:
Zeitschrift für anorganische und allgemeine Chemie
影响因子:
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作者:
L. Jouffret;S. Krivovichev;P. Burns
通讯作者:
P. Burns
DOI:
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发表时间:
1989
期刊:
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通讯作者:
R. Rogers
DOI:
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发表时间:
1938
期刊:
影响因子:
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作者:
G. Conn;C. Wu
通讯作者:
C. Wu
影响因子:
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作者:
F. Kraus;S. Baer
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