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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2002     Display Documents



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ID: 7141.0, MPI für Festkörperforschung / FKF Publikationen 2002
Spontaneous magnetization below 7.7 K based on an extended 3-D H-bonding network material: synthesis, crystal structure and magnetic properties
Authors:Ren, X.-M.; Chen, Y. C.; He, C.; Gao, S.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Journal of the Chemical Society: Dalton Transactions
Volume:2002
Issue / Number:20
Start Page:3915
End Page:3918
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The structure of the complex [4-aminopyridinium][Ni(mnt)(2)],
as determined by X-ray single crystal analysis, consists of 4-
aminopyridinium cations and [Ni(mnt)(2)](-) anions. The
interactions between anions and cations via the bifurcated
N(Py)-H...NC H-bonds give rise to a 1-D zigzag chain of
alternating cations and anions, and a 3-DH-bonding network
through further N(NH2)-H...NC interactions chi(dc) and chi(ac)
have been measured down to 1.8 K and analysed, indicating the
existence of a spin canting phenomenon. Below the critical
temperature (around 7.7 K), the sample spontaneously
magnetizes, and the hysteresis loop was observed at 1.85 K,
corresponding parameters are as follows: H-c = 150 Oe and M-r =
7.9 emu mol(-1). The pathway of the exchange interaction in
this complex via H-bonding is discussed in light of the crystal
structure analysis.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Anqing Normal Coll, Dept Chem, Anqing 246011, Peoples R China
; Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
; Peking Univ, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China
Identifiers:ISI:000178460600022
ISSN:1472-7773
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