Series of Lanthanide Organometallic Single-Ion Magnets

doi:10.1021/ic202511n

CORC > 北京大学 > 化学与分子工程学院

	Series of Lanthanide Organometallic Single-Ion Magnets
	Jiang, Shang-Da ; Liu, Shan-Shan ; Zhou, Li-Nan ; Wang, Bing-Wu ; Wang, Zhe-Ming ; Gao, Song
刊名	inorganic chemistry
	2012
关键词	LIGAND-FIELD PARAMETERS F-ELECTRONIC STRUCTURES HIGH-SPIN MOLECULES MAGNETIZATION RELAXATION COMPLEXES BEHAVIOR METALLOCENES NANOMAGNETS DERIVATIVES LESSONS
DOI	10.1021/ic202511n
英文摘要	The synthesis, structures, and magnetic properties of a series of lanthanide organometallic mixed sandwich molecules, (Cp)Ln(COT), are investigated, where Cp is the pentamethylcyclopentadiene anion and COT is the cyclooctatetraene dianion and Ln represents Tb-III, Dy-III, Ho-III, Er-III, and Tail Among the five complexes, Dy and Ho complexes are determined to be single-ion magnets in addition to the previously reported Er complex. Both Dy and Ho complexes show obvious quantum tunneling magnetization relaxation in the absence of a static field. The diluted Ho complex behaves two sets of thermally activated relaxation as we reported previously in Er due to the COT ring static disorder. A stair-shaped hysteresis for the Er compound can be observed at 1.6 K with Hc = 1 kOe at a sweeping rate over 700 Oe/s. The quantum tunneling decoherence relaxation rate increases from Er to Ho to Dy, which may be caused by the relative increase of transverse anisotropy coming from the larger tilting of the two aromatic rings within the molecule. The fine electronic structure is analyzed with ligand-field theory employing the effective Hamiltonian method. The zero-field splitting is determined to be Ising type, and the energy gap between the ground state and the first excited one is consistent with the barrier obtained by Arrhenius analysis.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000301007100043&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Chemistry, Inorganic & Nuclear; SCI(E); PubMed; 108; ARTICLE; 5; 3079-3087; 51
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/149919]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Jiang, Shang-Da,Liu, Shan-Shan,Zhou, Li-Nan,et al. Series of Lanthanide Organometallic Single-Ion Magnets[J]. inorganic chemistry,2012.
APA	Jiang, Shang-Da,Liu, Shan-Shan,Zhou, Li-Nan,Wang, Bing-Wu,Wang, Zhe-Ming,&Gao, Song.(2012).Series of Lanthanide Organometallic Single-Ion Magnets.inorganic chemistry.
MLA	Jiang, Shang-Da,et al."Series of Lanthanide Organometallic Single-Ion Magnets".inorganic chemistry (2012).