Yao Haiyun, Calvez Guillaume, Daiguebonne Carole, Suffren Yan, Bernot Kevin, Guillou Olivier
Institut des Sciences Chimiques de Rennes, Université Rennes, INSA Rennes, CNRS, UMR 6226, F-35708 Rennes, France.
Inorg Chem. 2021 Nov 1;60(21):16782-16793. doi: 10.1021/acs.inorgchem.1c02662. Epub 2021 Oct 12.
Solvothermal reactions between hexanuclear complexes with the general chemical formula [Ln(μ-O)(μ-OH)(NO)(HO)]·2NO·2HO and 2-bromobenzoic acid (2-bbH) lead to a series of isostructural one-dimensional coordination polymers with the general chemical formula [Ln(2-bb)] with Ln = Sm, Eu, Tb, Dy, and Y. These coordination polymers crystallize in the orthorhombic space group 2 (No. 43) with the following cell parameters: = 29.810(3) Å, = 51.185(6) Å, = 11.7913(14) Å, = 17992(4) Å, and = 16. The europium- and terbium-based derivatives show sizable luminescence intensities under UV excitation. Isostructural heterolanthanide coordination polymers have also been prepared. Their luminescent properties suggest that during the synthetic process the starting hexanuclear complexes are destroyed but strongly influence the distribution of the different lanthanide ions over the metallic sites of the crystal structure. Indeed, it is possible to prepare heterolanthanide coordination polymers in which lanthanide-ion segregation is controlled.
通式为[Ln(μ - O)(μ - OH)(NO)(HO)]·2NO·2HO的六核配合物与2 - 溴苯甲酸（2 - bbH）之间的溶剂热反应生成了一系列通式为[Ln(2 - bb)]的同构一维配位聚合物，其中Ln = Sm、Eu、Tb、Dy和Y。这些配位聚合物结晶于正交晶系空间群2（编号43），具有以下晶胞参数： = 29.810(3) Å， = 51.185(6) Å， = 11.7913(14) Å， = 17992(4) Å，且 = 16。基于铕和铽的衍生物在紫外激发下表现出相当大的发光强度。还制备了同构的异镧系配位聚合物。它们的发光性质表明，在合成过程中起始的六核配合物被破坏，但强烈影响不同镧系离子在晶体结构金属位点上的分布。实际上，可以制备出其中镧系离子分离受到控制的异镧系配位聚合物。
