摘要
合成并表征了一对蒎烯修饰的稀土铕(Ⅲ)配合物Eu(TTA)3L1a(1a)和Eu(TTA)3L1b(1b)(TTA=2-噻吩甲酰三氟丙酮,L1a=(+)-4,5-双蒎烯-2,2′-联吡啶,L1b=(-)-4,5-双蒎烯-2,2′-联吡啶)。化合物的手性特征通过X射线单晶结构和圆二色光谱进行了表征。配合物1a结晶于极性空间群P1,中心Eu(Ⅲ)离子呈现出严重扭曲的四方反棱柱体的配位环境。鉴于非中心对称结构的特性,配合物1a也表现出明显的铁电性质。
A couple of pinene-containing europium （Ⅲ） complexes, Eu（TTA）3 L1 a（1 a） and Eu（TTA）3 L1 b（1 b）（TTA=thenoyltrifluoroacetonate, L1 a=（＋）-4,5-bis（pinene）-2,2′-bipyridine, L1 b=（-）-4,5-bis（pinene）-2,2′-bipyridine）, were prepared and characterized. The chiral characterization was confirmed by single crystal X-ray diffraction and distinct electronic circular dichroism（CD） signals. Complex 1 a crystallizes in the polar space group P1, and a strongly distorted square-antiprism environment around the Eu （Ⅲ） ion is exhibited. Due to the non-centrosymmetric structure, distinct ferroelectric behavior of complex 1 a was observed as expected.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2017年第11期2060-2064,共5页
Chinese Journal of Inorganic Chemistry
基金
supported by the Jiangsu Province Science Foundation for Youths (Grant No.BK20150569)
the National Natural Science Foundation of China (Grant No.201502088)
the project of Scientific and Technological Support Program in Jiangsu province (Grant No.BE2014147-2)
the Doctoral Fund of the Ministry of Education of China for financial support (Grant No.20120091130002)~~
关键词
配位化学
手性铕(Ⅲ)配合物
晶体结构
铁电性质
coordination chemistry
chiral europium（III） complexes
crystal structure
ferroelectric properties
