A new heptanuclear trigonal prismatic cluster [PrCu6(μ3-OH)3(Gly)6im6](ClO4)6 was synthesized through the self-assembly of Pr3+, Cu2+, glycine and imidazole in aqueous solution and characterized by X-ray structure ...A new heptanuclear trigonal prismatic cluster [PrCu6(μ3-OH)3(Gly)6im6](ClO4)6 was synthesized through the self-assembly of Pr3+, Cu2+, glycine and imidazole in aqueous solution and characterized by X-ray structure analysis. The compound belongs to the trigonal R3 space group with a = b = 15.8761(2), c = 23.4943(5) ?, V = 5128.4(1) ?3, Z = 3, Dc = 1.965 g/cm3, μ = 2.869 mm-1, F(000) = 3012, the final R = 0.0332 and wR = 0.0844 for 3596 independent reflections. In the cation, the Pr3+ ion is situated at the center of a prism formed by six copper atoms and coordinates to nine oxygen atoms with a tricapped trigonal prismatic coordination polyhedron. Six glycine ligands and six imidazole terminal ligands participate in constructing the cluster.展开更多
Two isostructural metal-organic frameworks formulated as [Gd7（L）4（μ3-OH）8（HCOO）（DMF）6（H20）].DMF·H2O （1） and [Tbv（L）4（P3-OH）8（HCOO）（DMF）5（HzO）]·DMFoH2O （2） （H3L=3,5-di（4＇-carboxylp...Two isostructural metal-organic frameworks formulated as [Gd7（L）4（μ3-OH）8（HCOO）（DMF）6（H20）].DMF·H2O （1） and [Tbv（L）4（P3-OH）8（HCOO）（DMF）5（HzO）]·DMFoH2O （2） （H3L=3,5-di（4＇-carboxylphenyl）benzoic acid） have been synthesized and structurally characterized. The building blocks of the structures are the heptanuclear lanthanide clusters of the dicubane-like type [Lnv7（μ3-OH）s]13＋ （Ln=Gd, Tb） which are formally assembled into porous three-dimensional networks through the linkage of L. Variable temperature magnetic studies down to 2 K reveal antiferromagnetic interactions in complex 1. Furthermore, the fluorescence property of 2 was also studied.展开更多
基金This research was supported by the State Key Laboratory of Structural Chemistry the National Science and Technology of China (001CB1089)+8 种基金 the Chinese Academy of Sciences (CAS) the National Science Foundation of China (20333070 2027307390206040) and the Science Foundation of CAS and Fujian Province (2002F0142003J0422004J0412004H201-1)
文摘A new heptanuclear trigonal prismatic cluster [PrCu6(μ3-OH)3(Gly)6im6](ClO4)6 was synthesized through the self-assembly of Pr3+, Cu2+, glycine and imidazole in aqueous solution and characterized by X-ray structure analysis. The compound belongs to the trigonal R3 space group with a = b = 15.8761(2), c = 23.4943(5) ?, V = 5128.4(1) ?3, Z = 3, Dc = 1.965 g/cm3, μ = 2.869 mm-1, F(000) = 3012, the final R = 0.0332 and wR = 0.0844 for 3596 independent reflections. In the cation, the Pr3+ ion is situated at the center of a prism formed by six copper atoms and coordinates to nine oxygen atoms with a tricapped trigonal prismatic coordination polyhedron. Six glycine ligands and six imidazole terminal ligands participate in constructing the cluster.
基金This work was supported by the National Natural Science Foundation of China （Nos. J1103303, 21302185）.
文摘Two isostructural metal-organic frameworks formulated as [Gd7（L）4（μ3-OH）8（HCOO）（DMF）6（H20）].DMF·H2O （1） and [Tbv（L）4（P3-OH）8（HCOO）（DMF）5（HzO）]·DMFoH2O （2） （H3L=3,5-di（4＇-carboxylphenyl）benzoic acid） have been synthesized and structurally characterized. The building blocks of the structures are the heptanuclear lanthanide clusters of the dicubane-like type [Lnv7（μ3-OH）s]13＋ （Ln=Gd, Tb） which are formally assembled into porous three-dimensional networks through the linkage of L. Variable temperature magnetic studies down to 2 K reveal antiferromagnetic interactions in complex 1. Furthermore, the fluorescence property of 2 was also studied.
