Capping Ligand Perturbed Slow Magnetic Relaxation in Dysprosium Single-Ion Magnets

	Capping Ligand Perturbed Slow Magnetic Relaxation in Dysprosium Single-Ion Magnets
	Bi Y ; Guo YN ; Zhao L ; Guo Y ; Lin SY ; Jiang SD ; Tang JK ; Wang BW ; Gao S
刊名	chemistry-a european journal
	2011
卷号	17 期号:44 页码:12476-12481
关键词	MOLECULE-MAGNET LANTHANIDE COMPLEXES LN(III) SPINTRONICS BEHAVIOR CLUSTER SERIES ANALOG LEVEL STATE
ISSN号	0947-6539
通讯作者	tang jk
中文摘要	single-ion magnets 1 and 2 and their diamagnetic analogues 3 and 4 for magnetic-site dilution were obtained through substitution of the coordinated water molecules of [ln(tta)(3)-(h(2)o)(2)] (ln=dy (1, 2), y (3, 4); tta = 4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedionate) by 2,2'-bipyridine (1, 3) and 1,10-phenanthroline (2, 4) capping ligands. their structures and magnetic properties were investigated with the goal of identifying features relevant to modulating relaxation dynamics of single-ion magnets. the metal ions in all complexes adopt an approximately square-antiprismatic (sap) o(6)n(2) coordination environment. the sap polyhedrons for both 1 and 2 show slight longitudinal compression, while the coordination sphere of 1 deviates more from an ideal sap than that of 2, as indicated by the skew angles of the sap environment. the similar values of u(eff) for the two magnetically diluted samples imply nearly the same distribution of low-lying states for their dy(iii) centers, which is consistent with the slight axial contraction observed for 1 and 2 and further corroborated by ligand-field analysis. the fast quantum tunneling rate tau(qtm) of 1, which is about ten times faster than that of 2, can presumably be associated with the larger rotation of the sap surroundings. this distortion may result in a significant transverse anisotropy terms, and thus strongly affect the dynamic behavior of the system.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000297317500032
公开日期	2012-06-08
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44305]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Bi Y,Guo YN,Zhao L,et al. Capping Ligand Perturbed Slow Magnetic Relaxation in Dysprosium Single-Ion Magnets[J]. chemistry-a european journal,2011,17(44):12476-12481.
APA	Bi Y.,Guo YN.,Zhao L.,Guo Y.,Lin SY.,...&Gao S.(2011).Capping Ligand Perturbed Slow Magnetic Relaxation in Dysprosium Single-Ion Magnets.chemistry-a european journal,17(44),12476-12481.
MLA	Bi Y,et al."Capping Ligand Perturbed Slow Magnetic Relaxation in Dysprosium Single-Ion Magnets".chemistry-a european journal 17.44(2011):12476-12481.