Synthesis and Structure of an Organo-templated Oxouranium Phosphite

来源 :Chemical Research in Chinese Universities | 被引量 : 0次 | 上传用户:weisu890221
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A novel layered oxouranium phosphite open-structure [(C10H24N2)(H2O)][(UO2)2(HPO3)3](denoted as TJPU-8,TJPU=Tianjin Polytechnic University) was hydrothermally synthesized with isophorondiamine(IPDA) as the template.Single crystal structure refinement disclosed that TJPU-8 crystallized in the monoclinic space group P21c with cell parameters a=1.8346(9) nm,b=0.6734(1) nm,c=2.0639(0) nm,β=114.61(5)°,V=2.3182(8) nm3,Z=2.TJPU-8 was constructed by UO7 monomer,U2O12 dimer and HPO3 groups.The monomeric UO7 or dimeric U2O12 was connected by HPO3 groups to form two types of 4-ring chains.An undulating sheet was then generated by connecting these two types of chains via HPO3 bridges.The layer structure formed by stacking the sheets along the a direction via the strong H-bonds of organoamine cations and water molecules intercalated in the interlayer spaces with the framework oxygen atoms.Although a mixture of cis-and trans-IPDA was used,only cis-IPDA served as the template.A typical green light emission of TJPU-8 is observed when excited by 266 nm laser. A novel layered oxouranium phosphite open-structure [(C10H24N2) (H2O)] [(UO2) 2 (HPO3) 3] (denoted as TJPU-8, TJPU = Tianjin Polytechnic University) was hydrothermally synthesized with isophorondiamine (IPDA) as the template . Single crystal structure refinement disclosed that TJPU-8 crystallized in the monoclinic space group P21c with cell parameters a = 1.8346 (9) nm, b = 0.6734 (1) nm, c = °, V = 2.3182 (8) nm3, Z = 2. TJPU-8 was constructed by UO7 monomer, U2O12 dimer and HPO3 groups. The monomeric UO7 or dimeric U2O12 was connected by HPO3 groups to form two types of 4-ring chains. An undulating sheet was then generated by connecting these two types of chains via HPO3 bridges. The layer structure formed by stacking the sheets along the a direction via the strong H-bonds of organoamine cations and water molecules intercalated in the interlayer spaces with the framework oxygen atoms.Although a mixture of cis-and trans-IPDA was used, only cis-IPDA served as the template. A typical green light emission of TJPU-8 is observed when excited by 266 nm laser.
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