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Ferro-and Antiferromagnetic Behaviors of Some Organomatallic and Coordinated Compounds

Published online by Cambridge University Press:  25 February 2011

H. H. Wei  and
Y. F. Chang
H. H. Wei
Affiliation:
Department of Chemistry, Tamkang University Tamsui, Taiwan.
Y. F. Chang
Affiliation:
Department of Chemistry, Tamkang University Tamsui, Taiwan.
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Abstract

Several new examples of ferro- and antiferromagnetic organometallic and coordinated compounds have been investigated by means of the temperature-dependent magnetic measurements and Mössbauer spectroscopy. Above 70 K the Cu3 [Fe(CN)6] 2-4H2O compound is ferromagnetic as it obeys the Curie-Weiss experession, χm= C/(T-θ), with θ = 25 K; μeff evalued at 200 K is 4.91 μβ. Below 20 K this compound displays the onset of spontaneous magnetization in zero applied field. Above 10 K the Cu[(bpy>2] 3 [Fe(CN)6] 2.5H2O is also ferromagnetic (θ= 2.5 K). Above 20 K the antiferromagnetic [Fe(C5H4Me)2] + [TCNOJ- (θ= 3.25 K) and [Fe(C5H4Me)2]+[TCNE]- (θ= -3.64 K) obey the Curie-Weiss expression. The e.p.r. and Mössbauer spectra for these compounds have been discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 247: Symposium N – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials , 1992 , 463
Copyright
Copyright © Materials Research Society 1992

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References

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