Two-Coordinate Co(II) Imido Complexes as Outstanding Single Molecule   Magnets

doi:10.1021/jacs.6b11043

CORC > 北京大学 > 化学与分子工程学院

	Two-Coordinate Co(II) Imido Complexes as Outstanding Single Molecule Magnets
	Yao, Xiao-Nan ; Du, Jing-Zhen ; Zhang, Yi-Quan ; Leng, Xue-Bing ; Yang, Mu-Wen ; Jiang, Shang-Da ; Wang, Zhen-Xing ; Ouyang, Zhong-Wen ; Deng, Liang ; Wang, Bing-Wu ; Gao, Song
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2017
关键词	GAUSSIAN-BASIS SETS ION MAGNET LANTHANIDE COMPLEXES LIGATION SYNTHESIS ATOMS LI ANISOTROPY EXCHANGE COBALT(II) BLOCKING BEHAVIOR
DOI	10.1021/jacs.6b11043
英文摘要	The pursuit of single-molecule magnets (SMMs) with better performance urges new molecular design that can endow SMMs larger magnetic anisotropy. Here we report that two-coordinate cobalt imido complexes featuring highly covalent Co=N cores exhibit slow relaxation of magnetization under zero direct-current field with a high effective relaxation barrier up to 413 cm(-1), a new record for transition metal based SMMs. Two theoretical models were carried out to investigate the anisotropy of these complexes: single-ion model and Co-N coupling model. The former indicates that the pseudo linear ligand field helps to preserve the first-order orbital momentum, while the latter suggests that the strong ferromagnetic interaction between Co and N makes the [CoN](+) fragment a pseudo single paramagnetic ion, and that the excellent performance of these cobalt imido SMMs is attributed to the inherent large magnetic anisotropy of the [CoN](+) core with IMJ = +/- 7/2 > ground Kramers doublet.; National Natural Science Foundation of China [21421091, 21432001, 21290171, 21321001, 91422302, 21571008]; National Key Basic Research Program of China [2013CB933401]; National Key Research and Development Program [2016YFA0202900]; Natural Science Foundation of Jiangsu Province 398 of China [BK20151542]; SCI(E); ARTICLE; 1; 373-380; 139
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/475724]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Yao, Xiao-Nan,Du, Jing-Zhen,Zhang, Yi-Quan,et al. Two-Coordinate Co(II) Imido Complexes as Outstanding Single Molecule Magnets[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2017.
APA	Yao, Xiao-Nan.,Du, Jing-Zhen.,Zhang, Yi-Quan.,Leng, Xue-Bing.,Yang, Mu-Wen.,...&Gao, Song.(2017).Two-Coordinate Co(II) Imido Complexes as Outstanding Single Molecule Magnets.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY.
MLA	Yao, Xiao-Nan,et al."Two-Coordinate Co(II) Imido Complexes as Outstanding Single Molecule Magnets".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2017).