title: An iron(III) phosphonate cluster containing a nonanuclear ring.
abstract: This communication reports the first example of cyclic ferric clusters with an odd number of iron atoms capped by phosphonate ligands, namely, [Fe9(mu-OH)(7)(mu-O)2(O3PC6H9)8(py)12]. The magnetic studies support a S = 1/2 ground state with an exchange coupling constant of about J approximately equal to -30 K.
authors.affiliation: State Key Laboratory of Coordination Chemistry, Coordination Chemistry Institute, Nanjing University, Nanjing 210093, P. R. China.
authors.forename: Hong-Chang
authors.initials: HC
authors.lastname: Yao
authors.forename: Jun-Jie
authors.initials: JJ
authors.lastname: Wang
authors.forename: Yun-Sheng
authors.initials: YS
authors.lastname: Ma
authors.forename: Oliver
authors.initials: O
authors.lastname: Waldmann
authors.forename: Wen-Xin
authors.initials: WX
authors.lastname: Du
authors.forename: You
authors.initials: Y
authors.lastname: Song
authors.forename: Yi-Zhi
authors.initials: YZ
authors.lastname: Li
authors.forename: Li-Min
authors.initials: LM
authors.lastname: Zheng
authors.forename: Silvio
authors.initials: S
authors.lastname: Decurtins
authors.forename: Xin-Quan
authors.initials: XQ
authors.lastname: Xin