A Series of 5-Azotetrazolyl Salicylic Acid Based Lanthanide Complexes: Syntheses, Structures and Mag

• 作 者: Wen-BinChen;Yan-XuanQiu;Yu-ZhiSu;WenDong;
• 机 构: Department of Chemistry,Guangzhou Key Laboratory for Environmentally Functional Materials and Techno
• 出 处: 中国化学会第29届学术年会
• 发表日期: 2014年期

　　Recently,the lanthanide complexes are attracting increasing attention for the large intrinsicmagnetic anisotropy of Ln(Ⅲ)ions and potential applications as high density magnetic memories,quantum computing devices,and molecular spintronics[1-6].The 5-azotetrazolyl salicylic acid(H3ASA)that contains azo,salicylic acid and tetrazole moieties should be an especially desirableligand for assembling various metal-organic complexes because it not only can dissociate mono-,di-and tri-valent anions,but also is additionally bonded by π-π interactions and hydrogen bondinginteractions.A series of dinuclear lanthanide complex [Ln2(H2ASA)2(HASA)2(H2O)8]·6H2O(Ln =Sm,Eu,Gd,Tb,Dy,Ho,Er)have been synthesized by slow evaporation of the mixed aqueoussolution of H3ASA and LnCl3·6H2O.The structures and magnetic properties have beencharacterized by X-ray diffraction and SQUID magnetometer.The result of AC magneticsusceptibility for dysprosium complex show that the in-phase(x′)and out-of-phase(x″)signalsshow obvious frequency dependence at low temperature.