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Abstract
Two uranyl complexes, UO2(p-C7H4O2Br)2(H2O) and UO2(m-C7H4O2Br)2, are synthesized by hydrothermal method and their structures determined by single-crystal X-ray diffraction. UO2(p-C7H4O2Br)2(H2O): R = 0.0606, monoclinic, space group P2(1)/c, with a =19.8400(12) Å, b = 8.8081(5) Å, c = 10.0914(6) Å, α = 90°, β = 92.687(2)°, γ = 90°, Z = 4, has a chair configuration with two cations. UO2(m-C7H4O2Br)2: R = 0.0333, monoclinic, space group P2(1)/c, with a = 5.1084(7) Å, b = 17.642(3) Å, c = 9.0716(13) Å, α = 90°, β = 94.063(2)°, γ = 90(2)°, Z = 2, forms a 1D chain with the ligand (m-bromobenzoic acid) taking the bridging mode.
Acknowledgements
The authors thank the National Basic Research Program of China (the 973 Program, No. 2003CB214606), National Natural Science Foundation of China (No. 20671076), the Program for Changjiang Scholars and Innovative Research Team in University PCSIRT (IRT 0559), the Key Laboratory Research and Establish Program of Shaanxi Education Section, China (No. 03JS006), and the Special Foundation of Shaanxi Education Section, China (No. 04JK143) for their financial support of this work.