Formate - The analogue of azide: Structural and magnetic properties of   M(HCOO)(2)(4,4 &apos;-bpy)center dot nH(2)O (M=Mn, Co, Ni; n=0, 5)

doi:10.1021/ic049170t

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	Formate - The analogue of azide: Structural and magnetic properties of M(HCOO)(2)(4,4 '-bpy)center dot nH(2)O (M=Mn, Co, Ni; n=0, 5)
	Wang, XY ; Wei, HY ; Wang, ZM ; Chen, ZD ; Gao, S
刊名	inorganic chemistry
	2005
关键词	ORGANIC SUPRAMOLECULAR COMPLEX CRYSTAL-STRUCTURE WATER CLUSTERS WEAK FERROMAGNETISM COORDINATION POLYMERS EXCHANGE INTERACTION NEUTRON-DIFFRACTION COPPER(II) FORMATE (H2O)(10) CLUSTER PHASE TRANSITION
DOI	10.1021/ic049170t
英文摘要	Reaction of transition metal formate M(HCOO)(2).2H(2)O (M = Mn, Co, Ni) with 4,4'-bpy (4,4-bipyridine) has led to four new compounds with the formula M(HCOO)(2)(4,4'-bpy).nH(2)O (M = Mn, Co (1.Mn, 2.Co), n = 0; M = Co, Ni (3.Co, 4.Ni), n = 5). Compounds 1.Mn and 2.Co are isomorphous and crystallized in the tetragonal crystal system with the chiral space group P4(1)2(1)2. They are of three-dimensional diamondoid structure connected by anti-anti formate with 4,4'-bpy in the cavities of the framework reinforcing the intermetallic connections; the diamondlike net was observed also in their azide analogue (Mn(N-3)(2)(4,4'-bpy)). Compounds 3.Co and 4.Ni are isomorphous also but crystallized in the monoclinic crystal system with the space group Cc. Both structures are uninterpenetrated 3D ''CdSO4" type with big channels, constructed by anti-anti formate and 4,4'-bpy. This type of net was not observed in their azide analogue. Residing in the channels, water molecules form a new type of 1D tape constructed by vertex-sharing cyclic pentamers. Magnetic measurements were performed on all of these four compounds. 1.Mn and 2.Co are weak ferromagnets with the critical temperature T-c = 5.3 and 7.4 K, respectively. 3.Co is an antiferromagnet with Neel temperature T-N = 3.0 K, and 4.Ni is a weak ferromagnet below 20 K. Hysteresis loop can be observed for 2.Co and 4.Ni at 1.8 K. As an analogue of azide, formate can be used to construct molecular architectures, which structurally and magnetically have great similarities to and also differences from those of azide. This offers a promising method for the design of new molecular architectures with formate.; Chemistry, Inorganic & Nuclear; SCI(E); PubMed; 0; REVIEW; 3; 572-583; 44
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/199498]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wang, XY,Wei, HY,Wang, ZM,et al. Formate - The analogue of azide: Structural and magnetic properties of M(HCOO)(2)(4,4 '-bpy)center dot nH(2)O (M=Mn, Co, Ni; n=0, 5)[J]. inorganic chemistry,2005.
APA	Wang, XY,Wei, HY,Wang, ZM,Chen, ZD,&Gao, S.(2005).Formate - The analogue of azide: Structural and magnetic properties of M(HCOO)(2)(4,4 '-bpy)center dot nH(2)O (M=Mn, Co, Ni; n=0, 5).inorganic chemistry.
MLA	Wang, XY,et al."Formate - The analogue of azide: Structural and magnetic properties of M(HCOO)(2)(4,4 '-bpy)center dot nH(2)O (M=Mn, Co, Ni; n=0, 5)".inorganic chemistry (2005).