کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1303002 | 974728 | 2010 | 4 صفحه PDF | دانلود رایگان |
A new clover-shaped trinuclear uranium(VI) complex of the formula [(UO2)3(phen)3(μ3-O)(μ2-OH)2(NO2)]·NO3·3DMF·H2O (1) (phen = 1,10-phenanthroline, DMF = N,N′-dimethylformamide) was prepared by reaction of UO2(NO3)2·6H2O and phen under ultrasonic condition. X-ray single-crystal diffraction analysis shows that each U(VI) ion is in a seven-coordinated pentagonal–bipyramidal environment, with two O atoms in axial positions forming a uranyl ion. Each uranyl ion in 1 is coordinated by one chelating phen ligand and three O atoms at the equatorial plane. Interestingly, one central μ3-oxo incorporates two μ2-OH− and one NO2− to link uranyl ions into a clover-shaped motif. The molecules of 1 are packed within the space through hydrogen bonds, π···π and lone-pair···π interactions. The solid diffuse-reflectance UV/vis and photoluminescence spectra of 1 were measured and discussed.
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Journal: Inorganic Chemistry Communications - Volume 13, Issue 7, July 2010, Pages 859–862