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	Two homometallic antiferromagnets based on oxalato-bridged honeycomb assemblies: (a)(2)[m-2(ii)(c2o4)(3)] (a = ammonium salt derived from diethylenetriamine; m-ii = fe2+, co2+)
	Duan, Zhiming1,2; Zhang, Yan3; Zhang, Bin1; Pratt, Francis L.4
刊名	Inorganic chemistry
	2009-03-02
卷号	48期号:5页码:2140-2146
ISSN号	0020-1669
DOI	10.1021/ic8021003
通讯作者	Zhang, bin(zhangbin@iccas.ac.cn)
英文摘要	Oxalato-bridged divalent homometallic compounds (a)(2)[m-2(ii)(c2o4)(3)] (m-ii = fe2+ (1), co2+ (2)) were obtained by a solvothermal method. they consist of honeycomb anions and cations, that is, the 5-oxo-1,4,7-triazabicyclo[4.3.0]non-6-en-7-yl ammonium ion (hereafter abbreviated as a(1)) in 1 and the 2-(2,3-dioxo-1-piperazinyl)eth-1-yl ammonium ion (hereafter abbreviated as a2) in 2, which were generated from in situ reactions of diethylenetriamine (deta) with oxalic acid catalyzed by the metal ions and yielded two compounds with different cell parameters: a = 17.2224(4)angstrom, b = 9.3151(2)angstrom, c = 15.1518(4)angstrom, beta = 95.767(1)degrees, v = 2418.5(1)angstrom(3), and z = 4, c2/c for 1 and a = 9.6924(2)angstrom, b = 15.8325(4)angstrom, c = 17.2995(4)angstrom, beta = 95.144(1)degrees, v = 2644.0(1)angstrom(3), z = 4, and p2(1)/n for 2. a, points its carbonyl group to the pocket of the honeycomb network. a2 forms a helical chain around the anion layers through hydrogen bonds along the 21 axis, and the crystal remains achiral due to the existence of the inversion symmetry. the methanol molecules occupy the holes situated between a2 and the oxalate network in 2. the distance between two anion layers in 1 was shorter than in 2 due to the template effect of the ammonium salts. in the anion layers, the hexagonal rings are elongated along the a axis in 1 and 2. there are interactions as hydrogen bonds between the cation and anion and between cations. a broad maximum observed in the temperature-dependent susceptibility curve shows antiferromagnetic interactions between paramagnetic ions. the antiferromagnetic ordering at 28 k in 1 and 21 k in 2 was confirmed by ac suspceptibility and specific heat measurements. hysteresis loops with a coercive field of 17 oe in i and 2300 oe in 2 were observed at 2 k.
WOS关键词	ORGANIC CONDUCTOR (BEDT-TTF)4CU(C2O4)2 ; MOLECULAR-BASED MAGNETS ; CRYSTAL-STRUCTURE ; OX ; CATIONS ; COMPLEX ; COMPOUND ; NETWORKS ; SERIES ; CU
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:000263667700043
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2400168
专题	中国科学院大学
通讯作者	Zhang, Bin
作者单位	1.Chinese Acad Sci, CMS & Inst Chem, Organ Solid Lab, BNLMS, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Peking Univ, Dept Phys, Beijing 100871, Peoples R China 4.Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England
推荐引用方式 GB/T 7714	Duan, Zhiming,Zhang, Yan,Zhang, Bin,et al. Two homometallic antiferromagnets based on oxalato-bridged honeycomb assemblies: (a)(2)[m-2(ii)(c2o4)(3)] (a = ammonium salt derived from diethylenetriamine; m-ii = fe2+, co2+)[J]. Inorganic chemistry,2009,48(5):2140-2146.
APA	Duan, Zhiming,Zhang, Yan,Zhang, Bin,&Pratt, Francis L..(2009).Two homometallic antiferromagnets based on oxalato-bridged honeycomb assemblies: (a)(2)[m-2(ii)(c2o4)(3)] (a = ammonium salt derived from diethylenetriamine; m-ii = fe2+, co2+).Inorganic chemistry,48(5),2140-2146.
MLA	Duan, Zhiming,et al."Two homometallic antiferromagnets based on oxalato-bridged honeycomb assemblies: (a)(2)[m-2(ii)(c2o4)(3)] (a = ammonium salt derived from diethylenetriamine; m-ii = fe2+, co2+)".Inorganic chemistry 48.5(2009):2140-2146.

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