A fan-shaped polynuclear Gd6Cu12 amino acid cluster: A "Hollow" and ferromagnetic Gd-6(mu(3)-OH)8 octahedral core encapsulated by six Cu-2 glycinato blade fragments

	A fan-shaped polynuclear Gd6Cu12 amino acid cluster: A "Hollow" and ferromagnetic Gd-6(mu(3)-OH)8 octahedral core encapsulated by six Cu-2 glycinato blade fragments
	S. C. Xiang ; S. M. Hu ; T. L. Sheng ; R. B. Fu ; X. T. Wu ; X. D. Zhang
刊名	Journal of the American Chemical Society
	2007-12
卷号	129 期号:49 页码:15144-+
关键词	hydroxo-lanthanide clusters single-molecule magnet crystal-structures trivalent lanthanide gadolinium complex symmetry-breaking iii complexes gd complexes ii/gd-iii ions
ISSN号	0002-7863
中文摘要	By a stepwise growth process, an axial-fan-like and high-nuclearity [Gd6Cu12] cluster compound (1) was obtained, in which Six [Cu-2] blade fragments encapsulate a "hollow" [Gd-6(mu(3)-OH)(8)] octahedral core. Without the support of a centered mu(6)-O ligand for the octahedral core, its mean Gd-mu(3)-O-Gd bridging angle (phi) is the largest one among the polynuclear [Gd-n ] (n >= 3) clusters. From the exchange and structural parameters of the reported complexes containing the GdO2Gd unit, an empirical formula was at the first time obtained. It can be concluded that phi > 110.9 degrees is a prerequisite for a GdO2Gd complex exhibiting molecular ferromagnetism. The positive exchange constants for the Gd-Gd coupling from the empirical estimation and data fitting suggest the [Gd-6] core in 1 is the first example of high-nuclearity Ln(n) cluster exhibiting the molecular ferromagnetism. The magnetic property for 1 is mainly predominated by the antiferromagnetic interaction of Cu-Cu coupling and the ferromagnetic interactions of Gd-Gd and of Gd-Cu coupling. At low field, 1 is a frustrated ferrimagnet, while it exhibits a single-ion behavior of Gd3+ ions at high field.
语种	英语
公开日期	2013-04-01
内容类型	期刊论文
源URL	[http://ir.fjirsm.ac.cn/handle/350002/6760]
专题	福建物质结构研究所_中科院福建物质结构研究所_期刊论文
推荐引用方式 GB/T 7714	S. C. Xiang,S. M. Hu,T. L. Sheng,et al. A fan-shaped polynuclear Gd6Cu12 amino acid cluster: A "Hollow" and ferromagnetic Gd-6(mu(3)-OH)8 octahedral core encapsulated by six Cu-2 glycinato blade fragments[J]. Journal of the American Chemical Society,2007,129(49):15144-+.
APA	S. C. Xiang,S. M. Hu,T. L. Sheng,R. B. Fu,X. T. Wu,&X. D. Zhang.(2007).A fan-shaped polynuclear Gd6Cu12 amino acid cluster: A "Hollow" and ferromagnetic Gd-6(mu(3)-OH)8 octahedral core encapsulated by six Cu-2 glycinato blade fragments.Journal of the American Chemical Society,129(49),15144-+.
MLA	S. C. Xiang,et al."A fan-shaped polynuclear Gd6Cu12 amino acid cluster: A "Hollow" and ferromagnetic Gd-6(mu(3)-OH)8 octahedral core encapsulated by six Cu-2 glycinato blade fragments".Journal of the American Chemical Society 129.49(2007):15144-+.