In this paper,the μeff’s of RE 3+ in five series complexes were determined by means of the self made Faraday magnetic balance.The experimental lindings show that in complex formation the number of 4f electrons of RE...In this paper,the μeff’s of RE 3+ in five series complexes were determined by means of the self made Faraday magnetic balance.The experimental lindings show that in complex formation the number of 4f electrons of RE 3+ is increased.This result supports the point of view that the RE 4f orbital participates in covalent bond.展开更多
合成了系列钆钐双核稀土有机配合物Gdx Sm1- x （TTA）3phen（x＝0～0．9）．红外光谱（IR）、X射线衍射（XRD）、热重（TG）结果推测了配合物可能的分子结构；紫外可见光谱（U V／vis ）结果表明，该系列稀土有机配合物能有效的吸收紫...合成了系列钆钐双核稀土有机配合物Gdx Sm1- x （TTA）3phen（x＝0～0．9）．红外光谱（IR）、X射线衍射（XRD）、热重（TG）结果推测了配合物可能的分子结构；紫外可见光谱（U V／vis ）结果表明，该系列稀土有机配合物能有效的吸收紫外光，吸收峰主要来自于有机配体TTA和phen（270 nm和351 nm处）；荧光光谱（FS）结果表明，Gd3＋对于Sm3＋具有荧光增效，当Gd3＋的摩尔分数为0．6时，Gd0．6Sm0．4（TTA）3phen类配合物的特征荧光（562 nm ，596 n m和643 n m处）强度均达到最大．展开更多
A new binuclear cage-like complex, [Eu2(TCM)2(DMSO)6]·2DMSO, was synthesized via the reaction of H3TCM(H3TCM={2,4,6-tris[(2-carboxyphenoxy)methyl]-1,3,5-trimethylbenzene}) and Eu3+. Single crystal X-ray diffracti...A new binuclear cage-like complex, [Eu2(TCM)2(DMSO)6]·2DMSO, was synthesized via the reaction of H3TCM(H3TCM={2,4,6-tris[(2-carboxyphenoxy)methyl]-1,3,5-trimethylbenzene}) and Eu3+. Single crystal X-ray diffraction study reveals a centro symmetric binuclear neutral entity, space group P21/c with a=1.5188(2) nm, b=1.7135(3) nm, c=1.7578(2) nm, β=95.34(2)°, V=4.5549(9) nm3, Z=4. In the complex, Eu3+ metal centers are bridged together by mono- and bidentate carboxylate groups from two ligands. The most interesting fact is that the size of solvent molecules has a great influence on the binuclear cage-like complex in the shape of binuclear cage, the coordination mode of carboxylate group and the coordination number of Eu3+.展开更多
文摘In this paper,the μeff’s of RE 3+ in five series complexes were determined by means of the self made Faraday magnetic balance.The experimental lindings show that in complex formation the number of 4f electrons of RE 3+ is increased.This result supports the point of view that the RE 4f orbital participates in covalent bond.
文摘合成了系列钆钐双核稀土有机配合物Gdx Sm1- x （TTA）3phen（x＝0～0．9）．红外光谱（IR）、X射线衍射（XRD）、热重（TG）结果推测了配合物可能的分子结构；紫外可见光谱（U V／vis ）结果表明，该系列稀土有机配合物能有效的吸收紫外光，吸收峰主要来自于有机配体TTA和phen（270 nm和351 nm处）；荧光光谱（FS）结果表明，Gd3＋对于Sm3＋具有荧光增效，当Gd3＋的摩尔分数为0．6时，Gd0．6Sm0．4（TTA）3phen类配合物的特征荧光（562 nm ，596 n m和643 n m处）强度均达到最大．
文摘A new binuclear cage-like complex, [Eu2(TCM)2(DMSO)6]·2DMSO, was synthesized via the reaction of H3TCM(H3TCM={2,4,6-tris[(2-carboxyphenoxy)methyl]-1,3,5-trimethylbenzene}) and Eu3+. Single crystal X-ray diffraction study reveals a centro symmetric binuclear neutral entity, space group P21/c with a=1.5188(2) nm, b=1.7135(3) nm, c=1.7578(2) nm, β=95.34(2)°, V=4.5549(9) nm3, Z=4. In the complex, Eu3+ metal centers are bridged together by mono- and bidentate carboxylate groups from two ligands. The most interesting fact is that the size of solvent molecules has a great influence on the binuclear cage-like complex in the shape of binuclear cage, the coordination mode of carboxylate group and the coordination number of Eu3+.
