An iron(III) phosphonate cluster containing a nonanuclear ring

Hong-Chang Yao; Jun-Jie Wang; Yun-Sheng Ma; Oliver Waldmann; Wen-Xin Du; You Song; Yi-Zhi Li; Li-Min Zheng; Silvio Decurtins; Xin-Quan Xin

doi:10.1039/B600763E

An iron(iii) phosphonate cluster containing a nonanuclear ring†

Hong-Chang Yao,^a Jun-Jie Wang,^a Yun-Sheng Ma,^a Oliver Waldmann,*^b Wen-Xin Du,^c You Song,^a Yi-Zhi Li,^a Li-Min Zheng,*^a Silvio Decurtins*^b and Xin-Quan Xin^a

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* Corresponding authors

^a State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing, P. R. China
E-mail: lmzheng@nju.edu.cn

^b Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, Bern, Switzerland
E-mail: oliver.waldmann@iac.unibe.ch, silvio.decurtins@iac.unibe.ch

^c State Key Laboratory of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou, P. R. China

Abstract

This communication reports the first example of cyclic ferric clusters with an odd number of iron atoms capped by phosphonate ligands, namely, [Fe₉(μ-OH)₇(μ-O)₂(O₃PC₆H₉)₈(py)₁₂]. The magnetic studies support a S = 1/2 ground state with an exchange coupling constant of about J ≈ −30 K.

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An iron(iii) phosphonate cluster containing a nonanuclear ring†

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