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Synthesis, structure, and magnetism of three azido-bridged Co2+ compounds with a flexible coligand 1,2-(tetrazole-1-yl)ethane
Li, Ru-Yin; Wang, Xin-Yi; Liu, Tao; Xu, Hong-Bin; Zhao, Fei; Wang, Zhe-Ming; Gao, Song
2008-09-15
Source PublicationINORGANIC CHEMISTRY
ISSN0020-1669
Volume47Issue:18Pages:8134-8142
AbstractBy utilizing suitable coligand endi (1, 2-(tetrazole-1-yl)ethane)) with variable conformations, we synthesized three new azido-bridged Co2+ compounds with molecular formulas Co(endi)(N-3)(2) (1, 3) and Co(endi)(2)(N-3)(2) (2) by tuning the stoichiometric ratio of ligand/metal and the concentration of the solution. All of the compounds have been characterized structurally and magnetically. In all three structures, the azide ions use the end-to-end mode to link the Co2+ centers to the 1 D chain (1) and 2D (4,4) layers (2 and 3). The endi coligands adopt a trans conformation in compound 1 and a gauche conformation in compounds 2 and 3. Linked by bridging endi, the 1D chains in compound 1 and 2D layers in compound 3 are extended, resulting in the final 2D layer for compound 1 and the 3D network for compound 3, whereas in compound 2, the endi acts as only a terminal ligand to separate the 2D layers. Compound 1 consists of dual end-to-end azido-bridged 1D Co2+ chains that are linked by trans endi into a 2D layer and are further extended to a 3D framework through H bonds. Compound 2 is a 2D (4,4) layer that is connected by end-to-end azido ions. The gauche endi ligands act as terminal ligands to separate the neighboring layers thoroughly. Compound 3 has a (4,4) 2D layer that is similar to that of compound 2, and these layers are further extended to a 3D network through gauche endi. The magnetic investigation shows that compound 3 is antiferromagnetically coupled and compound 2 is a weak ferromagnet with a critical temperature of 22 K, which is quite high compared with that of the previously reported 2D azido-bridged Co2+ compounds.
DOI10.1021/ic800570a
Indexed BySCI
Language英语
WOS IDWOS:000259093700030
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:66[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65214
Collection中国科学院化学研究所
Corresponding AuthorGao, Song
AffiliationPeking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Li, Ru-Yin,Wang, Xin-Yi,Liu, Tao,et al. Synthesis, structure, and magnetism of three azido-bridged Co2+ compounds with a flexible coligand 1,2-(tetrazole-1-yl)ethane[J]. INORGANIC CHEMISTRY,2008,47(18):8134-8142.
APA Li, Ru-Yin.,Wang, Xin-Yi.,Liu, Tao.,Xu, Hong-Bin.,Zhao, Fei.,...&Gao, Song.(2008).Synthesis, structure, and magnetism of three azido-bridged Co2+ compounds with a flexible coligand 1,2-(tetrazole-1-yl)ethane.INORGANIC CHEMISTRY,47(18),8134-8142.
MLA Li, Ru-Yin,et al."Synthesis, structure, and magnetism of three azido-bridged Co2+ compounds with a flexible coligand 1,2-(tetrazole-1-yl)ethane".INORGANIC CHEMISTRY 47.18(2008):8134-8142.
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