Department of Chemistry, The George Washington University, 725 21st Street, NW, Washington, DC 20052, United States.
Inorg Chem. 2013 Feb 18;52(4):2060-9. doi: 10.1021/ic3024698. Epub 2013 Jan 31.
Six novel uranyl terpyridine aromatic carboxylate coordination polymers, [UO(2)(C(6)H(2)O(4)S)(C(15)H(11)N(3))] (1), [UO(2)(C(6)H(2)O(4)S)(C(15)H(10)N(3)Cl)]·H(2)O (2), [UO(2)(C(8)H(4)O(4))(C(15)H(11)N(3))] (3), [UO(2)(C(8)H(4)O(4))(C(15)H(10)N(3)Cl)] (4), [UO(2)(C(12)H(6)O(4))(C(15)H(11)N(3))] (5), and [UO(2)(C(12)H(6)O(4))(C(15)H(10)N(3)Cl)] (6), were synthesized under solvothermal conditions and characterized by single-crystal and powder X-ray diffraction and luminescence and UV-vis spectroscopy. Compounds 1, 2, and 5 crystallize as molecular uranyl dimers, whereas compounds 3, 4, and 6 contain ladder motifs of uranyl centers. Fluorescence spectra of 1-4 show characteristic UO(2)(2+) emission, wherein bathochromic and hypsochromic shifts are noted as a function of organic species. In contrast, uranyl emission from 5 and 6 is quenched by the naphthalene dicarboxylic acid linker molecules.
六种新型铀酰三吡啶芳香羧酸配位聚合物，[UO(2)(C(6)H(2)O(4)S)(C(15)H(11)N(3))] (1)，[UO(2)(C(6)H(2)O(4)S)(C(15)H(10)N(3)Cl)]·H(2)O (2)，[UO(2)(C(8)H(4)O(4))(C(15)H(11)N(3))] (3)，[UO(2)(C(8)H(4)O(4))(C(15)H(10)N(3)Cl)] (4)，[UO(2)(C(12)H(6)O(4))(C(15)H(11)N(3))] (5)，和[UO(2)(C(12)H(6)O(4))(C(15)H(10)N(3)Cl)] (6)，是在溶剂热条件下合成的，并通过单晶和粉末 X 射线衍射以及发光和紫外可见光谱进行了表征。化合物 1、2 和 5 结晶为分子铀酰二聚体，而化合物 3、4 和 6 含有铀酰中心的梯形基元。1-4 的荧光光谱显示出特征的 UO(2)(2+)发射，其中随着有机物种的变化，出现了红移和蓝移。相比之下，5 和 6 的铀酰发射被萘二甲酸连接分子猝灭。
