Synthesis and Properties of Dinuclear Europium(Ⅲ)Complex Containing 2-Benzoylbenzoic Acid

• 作者: YANG Ying-Qun LI Chang-Hong LI Wei YANG Tian-Yi
• 来源期刊: 结构化学
• 年，卷（期）: 2022,（3）
• 页码范围: 248-252
• 页数: 5页
• 语种: 英文
• DOI: 10.14102/j.cnki.0254-5861.2011-3348

摘要

A new europium(Ⅲ)complex[Eu2(C14H9O3)6(2,2'-bipy)2]·(2,2'-bipy)2 has been synthesized with 2-benzoylbenzoic acid and 2,2'-bipyridine as ligands.Crystal data:triclinic,space group P1,with a=13.5251(5),b=13.9453(5),c=15.3582(5)?,a=76.922(3)°,β=79.740(3)°,y=64.248(4)°,V=2530.83(18)?3,Dc=1.496 g/cm3,Z=1,μ(MoKfa)=1.305 mm-1,F(000)=1156,the final R=0.0340 and wR=0.0638.The Eu(Ⅲ)ion is coordinated by eight atoms to give a distorted square antiprism coordination geometry.The complex exhibits antiferromagnetism in the temperature range of 300～2 K,and two intense fluorescence emission bands arising from the transitions of Eu3+:5Do →7F1(595 nm)and 5Do → 7F2(618 nm),respectively.In addition,the fluorescence sensing properties of the complex in CrO42-solution were studied.