摘要
以2-(4-甲基苯甲酰基)苯甲酸(HL)为配体合成了一个新的锰((Ⅱ)配合物Mn(L)2(2,2’-bipy)2。该配合物晶体属单斜晶系,空间群P21/c,晶胞参数:a=1.719 8(2) nm,b=1.039 80(14) nm,c=2.346 3(3) nm,β=95.732(3)°,V=4.174 8(9) nm3,Dc=1.346 g·cm-3,Z=4, μ(Mo Kα)=0.373 mm-1,F(000)=1 756,最终偏离因子R1=0.042 3,wR2=0.094 9。标题配合物的中心锰(Ⅱ)离子处于变形的八面体配位环境中。测定了配合物的电化学、荧光和磁性。结果表明:在循环伏安过程中,配合物的电子转移是准可逆的,对应的电极反应是Mn(Ⅲ)/Mn(Ⅱ);配合物在536~556 nm之间有一个较强的荧光发射峰;在300~2 K,配合物有反铁磁性。
A new complex Mn(L)2(2,2'-bipy)2 (1) with 2-(4-methylbenzoyl)benzoic acid (HL) as a ligand has been synthesized. Crystal data for 1 are as follows: monoclinic, space group P21/c, a=1.719 8(2) nm, b=1.039 80(14) nm, c=2.346 3(3) nm, β=95.732(3)°, V=4.174 8(9) nm3, Dc=1.346 g·cm-3, Z=4, μ(Mo Kα)=0.373 mm-1, F(000)=1 756, final discrepancy factors R1=0.042 3, wR2=0.094 9. In 1, Mn(Ⅱ) ion is coordinated by six atoms to give a distorted octahedral coordination geometry. The electrochemical, luminescence and magnetic properties of 1 are studied. The results show that the electron transfer of 1 is quasi reversible in the electrode reaction corresponding to Mn(Ⅲ)/Mn(Ⅱ), and 1 exhibits one relatively strong fluorescent emission band at around 536~556 nm. In addition, 1 displays antiferromagnetic property in temperatures range of 300~2 K. CCDC: 924900.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2014年第3期659-663,共5页
Chinese Journal of Inorganic Chemistry
基金
湖南省科学技术厅科技计划项目(No.2012GK3030)
湖南省教育厅科学研究项目(No.11C0186)
衡阳市科技计划项目(No.2011kG28)
湖南省重点建设学科资助项目