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两个含有2,6-二氟苯甲酸配体稀土配合物的合成及晶体结构(英文)
Synthesis, Crystal Structures of Two Lanthanides Complexes with 2,6-Difluorobenzoic Acid
【摘要】 利用2,6-二氟苯甲酸和1,10-菲咯啉作为配体分别与Tm3+、Yb3+离子在常温下反应,制得2个稀土配合物[Tm(dfba)2(phen)(μ2-dfba)]2 (1)和[Yb(dfba)2(phen)(μ2-dfba)]2 (2)(dfba-=2,6-二氟苯甲酸根,phen=1,10-菲咯啉)。用元素分析、红外光谱对2个稀土配合物进行了表征,并用单晶X射线衍射确定了配合物的晶体结构;测定了配合物1和2的热稳定性。结构分析表明配合物1和2具有相似的晶体结构。每个Ln3+与2个dfba-配体和1个phen分子配位,形成[Ln(dfba)2(phen)]+结构单元,[Ln(dfba)2(phen)]+单元再通过2个不同的dfba-配体桥联形成双核分子[Ln(dfba)2(phen)(μ2-dfba)]2(Ln=Tm,Yb)。
【Abstract】 Two complexes [Tm(dfba)2(phen)(μ2-dfba)]2(1) and [Yb(dfba)2(phen)(μ2-dfba)]2(2)(dfba-=2,6-difluorobenzoate and phen=1,10-phenanthroline) were synthesized by the reaction of 2,6-difluorobenzote and phenanthroline with Tm3+and Yb3+ions,respectively.The complexes 1 and 2 were characterized by elemental analysis,FT-IR spectra,thermal gravimetric analysis(TGA) and their crystal structures were determined by single X-ray diffraction.The crystal structures analysis indicated that the complexes 1 and 2 are isostructural.Each Ln3+is coordinated with two dfba-ligands and one phen molecule to form a [Ln(dfba)2(phen)]+unit,and the neighboring two [Ln(dfba)2(phen)]+units are bridged by two different dfba-ligands to form a binuclear molecule,[Ln(dfba)2(phen)(μ2-dfba)]2(Ln=Tm,Yb).CCDC:1960656,1;1960657,2.
【Key words】 2,6-difluorobenzoicacid; 1,10-phenanthroline; Tm3+; Yb3+; crystal structure;
- 【文献出处】 无机化学学报 ,Chinese Journal of Inorganic Chemistry , 编辑部邮箱 ,2020年05期
- 【分类号】O641.4
- 【下载频次】142