TY - JOUR
T1 - Two new uranyl fluoride complexes with UVIO-alkali (Na, Cs) interactions
T2 - Experimental and theoretical studies
AU - Chen, Fei
AU - Wang, Congzhi
AU - Shi, Weiqun
AU - Zhang, Miao
AU - Liu, Caiming
AU - Zhao, Yuliang
AU - Chai, Zhifang
PY - 2013/10/21
Y1 - 2013/10/21
N2 - Two new layered 3D uranyl fluoride complexes: Na3(UO 2)2F3(OH)4(H2O) 2 (1) and Cs(UO2)2F5 (2) have been prepared using the hydrothermal method and characterized via single crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic space group C2/c [a = 15.125(3) Å, b = 6.941(1) Å, c = 11.257(2) Å, and β = 94.76(3)°] and compound 2 in the orthorhombic space group Cmcm [a = 12.149(2) Å, b = 11.862(2) Å, c = 12.366(2) Å], respectively. Both of them possess extended 3D structures. Furthermore, UVIO- alkalis (Na, Cs) interactions were observed in two compounds, which is relatively rare in U(vi) complexes. By introducing alkali ions, the layered structures can be further assembled into three-dimensional ones. Density functional theory (DFT) studies confirmed that the interactions between the alkalis and the oxygens of uranyl mainly ionic with small proportion of covalency, which results in the formation of these uranyl fluoride complexes with 3D structures.
AB - Two new layered 3D uranyl fluoride complexes: Na3(UO 2)2F3(OH)4(H2O) 2 (1) and Cs(UO2)2F5 (2) have been prepared using the hydrothermal method and characterized via single crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic space group C2/c [a = 15.125(3) Å, b = 6.941(1) Å, c = 11.257(2) Å, and β = 94.76(3)°] and compound 2 in the orthorhombic space group Cmcm [a = 12.149(2) Å, b = 11.862(2) Å, c = 12.366(2) Å], respectively. Both of them possess extended 3D structures. Furthermore, UVIO- alkalis (Na, Cs) interactions were observed in two compounds, which is relatively rare in U(vi) complexes. By introducing alkali ions, the layered structures can be further assembled into three-dimensional ones. Density functional theory (DFT) studies confirmed that the interactions between the alkalis and the oxygens of uranyl mainly ionic with small proportion of covalency, which results in the formation of these uranyl fluoride complexes with 3D structures.
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U2 - 10.1039/c3ce41261j
DO - 10.1039/c3ce41261j
M3 - Article
AN - SCOPUS:84884231960
SN - 1466-8033
VL - 15
SP - 8041
EP - 8048
JO - CrystEngComm
JF - CrystEngComm
IS - 39
ER -