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Ferrimagnets made by assembling high- spin organic polyradicals by mean of complexation with magnetic metal ions. Vii. One- dimensional chains made by an alternating array of mn(ll)(hfac)2 and 1,3- bis(n- oxy- tert-butylamino)benzenes

Published online by Cambridge University Press:  10 February 2011

Katsuya Inoue  and
Hiizu lwamura
Katsuya Inoue
Affiliation:
Department of Chemistry, School of Science, Kitasato University, 1- 15- 1 Kitasato, Sagamihara, Kanagawa 228, Japan, [email protected]
Hiizu lwamura
Affiliation:
Institute for Fundamental Research in Organic Chemistry Kyushu University, Hakozaki, Higashi- ku, Fukuoka 812- 81, Japan, [email protected]
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Abstract

Manganese bis(hexafluoroacetylacetonate), Mn(hfac)2, reacts with a series of bisnitroxide radicals, 5- R- 1,3- bis(N- oxy- tert- butylamino)benzene 1R (R = H, Cl, and Br), to give 1:1 polymeric complexes of formula [Mn(hfac)2·1R]n. The X- ray crystal structure of the 1H complex reveals that it crystallizes in the monoclinic system, space group P21/n, with a= 9.212(3) Å, b= 16.620(3) Å, c= 20.088(2) Å, β= 98.46(1)°, V= 3042(1)Å3, and Z= 4. The manganese(II) ion and 1H molecule makes onedimensional chains by ligation of the latter serving as a bis(monodentate) ligand to the former. The crystals of the 1H complex undergo transition to a metamagnet at 5.5 K. Similar 1cl and 1Br complexes behave as ferrimagnets with transition temperatures of 5.2 and 5.0 K, respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 413: Symposium W – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials III , 1995 , 313
Copyright
Copyright © Materials Research Society 1996

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References

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