Synthesis and crystal structure of a new open-framework iron phosphate (NH4)(4)Fe-3(OH)(2)F-2 H-3(PO4)(4) : Novel linear trimer of corner-sharing Fe(III) octahedra

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	Synthesis and crystal structure of a new open-framework iron phosphate (NH4)(4)Fe-3(OH)(2)F-2 H-3(PO4)(4) : Novel linear trimer of corner-sharing Fe(III) octahedra
	Mi, J. X. ; Wang, C. X. ; Chen, N. ; Li, R. ; Pan, Y. M. ; Mi JX(宓锦校)
刊名	http://dx.doi.org/10.1016/j.jssc.2010.09.008
	2010-12
关键词	RAY-ABSORPTION-SPECTROSCOPY PRE-EDGE HYDROTHERMAL SYNTHESIS OXIDATION-STATE PHYSICAL-PROPERTIES MIXED-VALENCE K-EDGE INFORMATION MINERALS SPECTRA
英文摘要	National Natural Science Foundation of China [40972035]; Natural Science and Engineering Research Council of Canada; NSERC; NRC; CIHR; University of Saskatchewan; A new iron phosphate (NH4)(4)Fe-3(OH)(2)F-2[H-3(PO4)(4)] has been synthesized hydrothermally at HF concentrations from 0.5 to 1.2 mL. Single-crystal X-ray diffraction analysis reveals its three-dimensional open-framework structure (monoclinic, space group P2(1)/n (No. 14), a=6.2614(13) angstrom, b=9.844(2) angstrom, c=14.271(3) angstrom, beta=92.11(1)degrees, V=879.0(3) angstrom(3)). This structure is built from isolated linear trimers of corner-sharing Fe(III) octahedra, which are linked by (PO4) groups to form ten-membered-ring channels along [1 0 0]. This isolated, linear trimer of corner-sharing Fe(III) octahedra, [(FeO4)(3)(OH)(2)F-2], is new and adds to the diverse linkages of Fe polyhedra as secondary building units in iron phosphates. The trivalent iron at octahedral sites for the title compound has been confirmed by synchrotron Fe K-edge XANES spectra and magnetic measurements. Magnetic measurements also show that this compound exhibit a strong antiferromagnetic exchange below T-N=17 K. consistent with superexchange interactions expected for the linear trimer of ferric octahedra with the Fe-F-Fe angle of 132.5 degrees. (C) 2010 Elsevier Inc. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/59321]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Mi, J. X.,Wang, C. X.,Chen, N.,et al. Synthesis and crystal structure of a new open-framework iron phosphate (NH4)(4)Fe-3(OH)(2)F-2 H-3(PO4)(4) : Novel linear trimer of corner-sharing Fe(III) octahedra[J]. http://dx.doi.org/10.1016/j.jssc.2010.09.008,2010.
APA	Mi, J. X.,Wang, C. X.,Chen, N.,Li, R.,Pan, Y. M.,&宓锦校.(2010).Synthesis and crystal structure of a new open-framework iron phosphate (NH4)(4)Fe-3(OH)(2)F-2 H-3(PO4)(4) : Novel linear trimer of corner-sharing Fe(III) octahedra.http://dx.doi.org/10.1016/j.jssc.2010.09.008.
MLA	Mi, J. X.,et al."Synthesis and crystal structure of a new open-framework iron phosphate (NH4)(4)Fe-3(OH)(2)F-2 H-3(PO4)(4) : Novel linear trimer of corner-sharing Fe(III) octahedra".http://dx.doi.org/10.1016/j.jssc.2010.09.008 (2010).