摘要
基于己二酰肼双缩(溴代)吡啶甲醛Schiff碱配体HLx(x=1,2),合成了2例双核Fe(Ⅱ)配合物,并通过红外光谱、X射线单晶衍射分析及磁化率测量等手段对配合物进行了表征。X射线单晶衍射分析结果表明,每个独立单元中均含有2个Fe(Ⅱ)离子、2个配体单元和4个高氯酸根阴离子,Fe(Ⅱ)离子呈N4O2八面体配位构型。分子间π…π堆积作用将配阳离子连成超分子一维链结构。磁性测试表明2个配合物都是高自旋态,同时配合物2呈现弱的分子间铁磁耦合作用。
Two binuclear Fe(Ⅱ) complexes of bis-pyridylhydrazone Schiff base ligands HLx(x=1, 2) have been successfully synthesized and characterized by infrared spectroscopy, X-ray single crystal diffraction and magnetic susceptibility measurements. Single-crystal structural determinations reveal that the Fe (Ⅱ) ion is chelated by two pyridylhydrazone Schiff base ligands to form a FeN4 O2 distorted octahedral structure and four free perchlorates serve as charge balancing anions. Intermolecular π…π stacking is present in the complexes, connecting adjacent[Fe2(HLx)2]4+cations to form supramolecular chains. Magnetic susceptibility measurement shows that the complexes are both in the high-spin state, meanwhile complex 2 exhibits weak intermolecular ferromagnetic coupling. CCDC:1946771, 1;1946772, 2.
作者
张男
苑娟
刘美姣
金怡姝
寇会忠
ZHANG Nan;YUAN Juan;LIU Mei-Jiao;JIN Yi-Shu;KOU Hui-Zhong(Department of Chemistry, Tsinghua University, Beijing 100084, China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2019年第11期2066-2072,共7页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21571113,21771115)资助项目
关键词
双核铁配合物
单晶结构
磁性
高自旋
酰腙
dinuclear iron(Ⅱ) complex
crystal structure
magnetism
high-spin
hydrazine
