Synthesis and characterization of uranyl(VI) and thorium(IV) complexes with phosphine oxides. The crystal structure of UO2(NO3)2(NO2-C6H4Ph2PO)2 |
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| Authors: | U. Casellato D. Fregona S. Tamburini P.A. Vigato R. Graziani |
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| Affiliation: | Istituto di Chimica e Tecnologia dei Radioelementi C.N.R., Corso Stati Uniti, 35100 Padua, Italy;Istituto di Chimica Generale dell''Università, Via Loredan 4, Padua, Italy |
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| Abstract: | Uranyl(VI) and thorium(IV) complexes of the type UO2(NO3)2(L1)2, UO2(NO3)2(L2)2, UO2(CH3COO)2L1, UO2(CH3COO)2L2, Th(NO3)4(L1)2 and Th(NO3)4(L2)2 (L1 = (2-nitro)phenyl-bis-phenyl phosphine oxide, L2 = triferrocenylphosphine oxide) are reported, together with their physico-chemical properties.The crystal structure of UO2(NO3)2(L1)2 is also reported. The crystals are monoclinic, space group P21/n with a = 17.78(1), b = 13.88(1), c = 17.37(1) Å, β = 114.8(1)° for Z = 4. The uranium atom is 8-coordinated, the uranyl(VI) group being equatorially surrounded by an irregular hexagon of six oxygen atoms from two trans neutral ligands and two nitrato groups. |
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| Keywords: | Author to whom correspondence should be addressed. |
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