Spontaneous magnetization below 7.7 K based on an extended 3-D H-bonding 
network material: synthesis, crystal structure and magnetic properties

Ren, X.-M.; Chen, Y. C.; He, C.; Gao, S.

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Spontaneous magnetization below 7.7 K based on an extended 3-D H-bonding network material: synthesis, crystal structure and magnetic properties

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Ren, X.-M.
Former Scientific Facilities, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Ren, X.-M., Chen, Y. C., He, C., & Gao, S. (2002). Spontaneous magnetization below 7.7 K based on an extended 3-D H-bonding network material: synthesis, crystal structure and magnetic properties. Journal of the Chemical Society: Dalton Transactions, 2002(20), 3915-3918.

Cite as: https://hdl.handle.net/21.11116/0000-000E-EF4B-2

Abstract

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.