Occurrence of a rare 4(9)center dot 6(6) structural topology, chirality, and weak ferromagnetism in the [NH4][M-II(HCOO)(3)] (M = Mn, Co, Ni) frameworks

doi:10.1021/ic0610031

CORC > 化学研究所 > 中国科学院化学研究所

	Occurrence of a rare 4(9)center dot 6(6) structural topology, chirality, and weak ferromagnetism in the [NH4][M-II(HCOO)(3)] (M = Mn, Co, Ni) frameworks
	Wang, Zheming ; Zhang, Bin ; Inoue, Katsuya ; Fujiwara, Hideki ; Otsuka, Takeo ; Kobayashi, Hayao ; Kurmoo, Mohamedally
刊名	INORGANIC CHEMISTRY
	2007-01-22
卷号	46 期号:2 页码:437-445
ISSN号	0020-1669
DOI	10.1021/ic0610031
英文摘要	We report the synthesis, crystal structures, thermal, IR, UV-vis, and magnetic properties of a series of divalent transition metal formates, [NH4][M(HCOO)(3)], where M = divalent Mn, Co, or Ni. They crystallize in the hexagonal chiral space group P6(3)22. The structure consists of octahedral metal centers connected by the anti-anti formate ligands, and the ammonium cations sit in the channels. The chiral structure is a framework with the rarely observed 4(9)center dot 6(6) topology, and the chirality is derived from the handedness imposed by the formate ligands around the metals and the presence of units with only one handedness. The thermal properties are characterized by a decomposition at ca. 200 degrees C. The three compounds exhibit an antiferromagnetic ground state at 8.4, 9.8, and 29.5 K for Mn, Co, and Ni, respectively. The last two display a weak spontaneous magnetization due to a small canting of the moments below the critical temperature, and the Co compound shows a further transition at lower temperatures. The isothermal magnetizations at 2 K show spin-flop fields of 600 Oe (Mn), 14 kOe (Co), and above 50 kOe (Ni) and a small hysteresis with a remnant magnetization of 25 cm(3) G mol(-1) (Co) and 50 cm(3) G mol(-1) (Ni) and coercive field of 400 Oe (Co) and 830 Oe (Ni).
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000243484700020
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/62479]
专题	中国科学院化学研究所
通讯作者	Wang, Zheming
作者单位	1.Japan Sci & Technol Corp, Inst Mol Sci, Okazaki, Aichi 4448585, Japan 2.Japan Sci & Technol Corp, CREST, Okazaki, Aichi 4448585, Japan 3.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China 5.Hiroshima Univ, Fac Sci, Dept Chem, Hiroshima 7398526, Japan 6.Univ Strasbourg 1, CNRSUMR 7140, Inst Le Bel, Chim Coordinat Organ Lab, F-67000 Strasbourg, France
推荐引用方式 GB/T 7714	Wang, Zheming,Zhang, Bin,Inoue, Katsuya,et al. Occurrence of a rare 4(9)center dot 6(6) structural topology, chirality, and weak ferromagnetism in the [NH4][M-II(HCOO)(3)] (M = Mn, Co, Ni) frameworks[J]. INORGANIC CHEMISTRY,2007,46(2):437-445.
APA	Wang, Zheming.,Zhang, Bin.,Inoue, Katsuya.,Fujiwara, Hideki.,Otsuka, Takeo.,...&Kurmoo, Mohamedally.(2007).Occurrence of a rare 4(9)center dot 6(6) structural topology, chirality, and weak ferromagnetism in the [NH4][M-II(HCOO)(3)] (M = Mn, Co, Ni) frameworks.INORGANIC CHEMISTRY,46(2),437-445.
MLA	Wang, Zheming,et al."Occurrence of a rare 4(9)center dot 6(6) structural topology, chirality, and weak ferromagnetism in the [NH4][M-II(HCOO)(3)] (M = Mn, Co, Ni) frameworks".INORGANIC CHEMISTRY 46.2(2007):437-445.