| 摘要: | 摘要： Two mixed-metal uranium compounds, [Cu(4,4′-bpy)(UO2)0.5(HPO4)(H2PO4)]·H2O (1) and [Cu(4,4′-bpy)(UO2)0.5(HAsO4)(H2AsO4)]·1.5H2O (2) have been synthesized under hydrothermal conditions and structurally characterized by single-crystal X-ray diffraction, fluorescence spectroscopy, and magnetic susceptibility. They are the first examples of mixed-metal uranium phosphate and arsenate incorporating an organic ligand. Their structures contain copper uranyl phosphate/arsenate layers which are covalently linked by 4,4′-bpy pillars to form a 3-D framework structure. The fluorescence spectrum of 1 shows the characteristic vibronic structure of the UO22+ moiety despite the presence of copper(II) ions in its structure. The two compounds are isostructural and crystallize in the monoclinic space group C2/c with a=20.184(4)Å, b=8.921(2)Å, c=19.095(3)Å, β=115.15(1)°, and R1=0.0244 for 1, and a=20.184(1)Å, b=9.0210(5)Å, c=19.714(1)Å, β=114.879(1)°, and R1=0.0399 for 2. A new copper uranyl phosphate and the arsenate analog have been presented. The compounds contain copper uranyl phosphate/arsenate layers covalently linked by 4,4′-bipyridine pillars into an open-framework structure. [Display omitted]
出版者： Amsterdam: Elsevier Inc
出版日期： 2013-01
出處： Journal of solid state chemistry, 2013-01, Vol.197, p.456-459
版權： 2012 Elsevier Inc.
版權： 2014 INIST-CNRS
識別號： ISSN: 0022-4596
識別號： EISSN: 1095-726X
識別號： DOI: 10.1016/j.jssc.2012.08.031
識別號： CODEN: JSSCBI |
