Synthesis, crystal structure and magnetic property of a binuclear   iron(III) citrate complex

doi:10.1023/A:1011055306645

CORC > 北京大学 > 化学与分子工程学院

	Synthesis, crystal structure and magnetic property of a binuclear iron(III) citrate complex
	Hao, X ; Wei, YG ; Zhang, SW
刊名	transition metal chemistry
	2001
关键词	OXO HEMERYTHRIN PERSPECTIVE CHEMISTRY CENTERS BIOLOGY
DOI	10.1023/A:1011055306645
英文摘要	The compound (Hql)(2)[Fe-2(cit)(2)(H2O)(2)]. 4H(2)O (1) [ql = quinoline, cit(4-) = C(O-)(CO2-)(CH2CO2-)(2)], prepared by reacting ferric nitrate, sodium citrate and quinoline in a molar ratio of 1:1:1 in aqueous solution, was characterized by density measurements, elementary analysis, i.r., X-ray crystallography and magnetic measurements. The X-ray crystallography results reveal that the molecule (1) consists of a binuclear iron(III) citrate anionic complex [Fe-2(cit)(2)(H2O)(2)](2-) and two protonated quinolines [Hql](+). The anionic complex has a centro-symmetric structure, in which two Fe3+ ions are bridged by two mu (2)-alkoxo groups of the two deprotonated citrate ligands. The other coordination sites of the two slightly distorted octahedra are completed by all the carboxylate groups of the two cit(4-) ligands in a monodentate mode, and two coordinated water molecules. Magnetic measurements indicate that the two Fe3+ ions are antiferromagnetically coupled below 200 K. A least-squares fit of variable-temperature (1.5-291 K) molar susceptibility data to a dimer model gave the coupling constant J/k = -6.35(7) K and Lande factor g = 2.052(9), where the spin-only Heisenberg-Dirac-van Vleck Hamiltonian is expressed as H = -2JS(1)S(2).; Chemistry, Inorganic & Nuclear; SCI(E); EI; 9; ARTICLE; 4-5; 384-387; 26
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/211916]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Hao, X,Wei, YG,Zhang, SW. Synthesis, crystal structure and magnetic property of a binuclear iron(III) citrate complex[J]. transition metal chemistry,2001.
APA	Hao, X,Wei, YG,&Zhang, SW.(2001).Synthesis, crystal structure and magnetic property of a binuclear iron(III) citrate complex.transition metal chemistry.
MLA	Hao, X,et al."Synthesis, crystal structure and magnetic property of a binuclear iron(III) citrate complex".transition metal chemistry (2001).