A New Bis(phthalocyaninato) Terbium Single-Ion Magnet with an Overall Excellent Magnetic Performance

• Published in: Inorganic chemistry Vol. 56; no. 22; pp. 13889 - 13896
• Main Authors: Chen, Yuxiang, Ma, Fang, Chen, Xiaoxiang, Dong, Bowei, Wang, Kang, Jiang, Shangda, Wang, Chiming, Chen, Xin, Qi, Dongdong, Sun, Haoling, Wang, Bingwu, Gao, Song, Jiang, Jianzhuang
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 20.11.2017
• ISSN: 0020-1669; 1520-510X
• DOI: 10.1021/acs.inorgchem.7b02010

Bulky and strong electron-donating dibutylamino groups were incorporated onto the peripheral positions of one of the two phthalocyanine ligands in the bis­(phthalocyaninato) terbium complex, resulting in the isolation of heteroleptic double-decker (Pc)­Tb­{Pc­[N­(C4H9)2]8} {Pc = phthalocyaninate; Pc­[N­(C4H9)2]8 = 2,3,9,10,16,17,23,24-octakis­(dibutylamino)­phthalocyaninate} with the nature of an unsymmetrical molecular structure, a square-antiprismatic coordination geometry, an intensified coordination field strength, and the presence of organic radical-f interaction. As a total result of all these factors, this sandwich-type tetrapyrrole lanthanide single-ion magnet (SIM) exhibits an overall enhanced magnetic performance including a high blocking temperature (T B) of 30 K and large effective spin-reversal energy barrier of U eff = 939 K, rendering it the best sandwich-type tetrapyrrole lanthanide SIM reported thus far.