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	Coordination complexes of 2-(4-quinolyl)nitronyl nitroxide with m(hfac)(2) [m = mn(ii), co(ii), and cu(ii)]: syntheses, crystal structures, and magnetic characterization
	Wang, HM; Liu, ZL; Liu, CM; Zhang, DQ; Lu, ZL; Geng, H; Shuai, ZG; Zhu, DB
刊名	Inorganic chemistry
	2004-06-28
卷号	43期号:13页码:4091-4098
ISSN号	0020-1669
DOI	10.1021/ic049946q
通讯作者	Zhang, dq(dqzhang@iceas.ac.cn)
英文摘要	Three new complexes of the formula m2l2 derived from 2-(4-quinolyl)nitronyl nitroxide (4-qnnn) and m(hfac)(2) [m- = mn(ii), co(ii), and cu(ii)], (4-qnnn)(2).[mn(hfac)(2)](2) (1), (4-qnnn)2-[co(hfac)(2)](2).2h(2)o (2), and (4-qnnn)(2).cu-(hfac)(2).cu'(hfac)(2) (3), were synthesized and characterized structurally as well as magnetically. complexes 1 and 2 are four-spin complexes with quadrangle geometry, in which both the nitrogen atoms of quinoline rings and oxygen atoms of nitronyl nitroxides are involved in the formation of coordination bonds. for complex 3, however, the nitrogen atoms of quinoline rings are coordinated with cu(ii) ion to afford a three-spin complex, which is further linked to another molecule of cu(hfac)(2) (referred to as cu'(hfac)(2)) to form a 1d alternating chain. the magnetic behaviors of the three complexes were investigated. for complex 1, as the nitronyl nitroxides and mn(ii) ions are strongly antiferromagnetically coupled, consequently its temperature dependence of magnetic susceptibility was fitted to the model of spin-dimer with s = 2, yielding the intradimer magnetic exchange constant of j = -0.82 cm(-1). for complex 2, the temperature dependence of the magnetic susceptibility in the t > 50 k region was simulated with the model of two-spin unit with s-1 = 3/2 and s-2 = 1/2, leading to j = -321.9 cm(-1) for the magnetic interaction due to co(ii)...o coordination bonding, d = -16.3 cm-1 (the zero-field splitting parameter), g = 2.26, and zj = -3.8 cm(-1) for the magnetic interactions between co(ii) ions and nitronyl nitroxides through quinoline rings and those between nitronyl nitroxides due to the short o...o short contacts. the temperature dependence of magnetic susceptibility of 3 was approximately fitted to a model described previously affording j(1) = -6.52 cm(-1) and j(2) = 3.64 cm(-1) for the magnetic interaction between nitronyl nitroxides and cu(ii) ions through the quinoline unit via spin polarization mechanism and the weak o...cu coordination bonding, respectively.
WOS关键词	SUBSTITUTED NITRONYL NITROXIDE ; SPIN POLYNITROXIDE RADICALS ; VERSATILE BRIDGING LIGANDS ; TRANSITION-METAL-COMPLEXES ; HIGH T-C ; MOLECULAR MATERIAL ; MANGANESE(II) ; COPPER(II) ; EXCHANGE ; CHAINS
WOS研究方向	Chemistry
WOS类目	Chemistry, Inorganic & Nuclear
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000222165700047
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2376959
专题	中国科学院大学
通讯作者	Zhang, DQ
作者单位	1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Wang, HM,Liu, ZL,Liu, CM,et al. Coordination complexes of 2-(4-quinolyl)nitronyl nitroxide with m(hfac)(2) [m = mn(ii), co(ii), and cu(ii)]: syntheses, crystal structures, and magnetic characterization[J]. Inorganic chemistry,2004,43(13):4091-4098.
APA	Wang, HM.,Liu, ZL.,Liu, CM.,Zhang, DQ.,Lu, ZL.,...&Zhu, DB.(2004).Coordination complexes of 2-(4-quinolyl)nitronyl nitroxide with m(hfac)(2) [m = mn(ii), co(ii), and cu(ii)]: syntheses, crystal structures, and magnetic characterization.Inorganic chemistry,43(13),4091-4098.
MLA	Wang, HM,et al."Coordination complexes of 2-(4-quinolyl)nitronyl nitroxide with m(hfac)(2) [m = mn(ii), co(ii), and cu(ii)]: syntheses, crystal structures, and magnetic characterization".Inorganic chemistry 43.13(2004):4091-4098.

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