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1D and 2D FeII Azide Coordination Polymers with Ferromagnetic Canting

Morsy A.M. Abu -Youssef ; Vratislav Langer (Institutionen för kemi- och bioteknik, Oorganisk miljökemi) ; Dominique Luneau ; Eman Shams ; Mohamed A. S. Goher ; Lars Öhrström (Institutionen för kemi- och bioteknik, Fysikalisk kemi)
European Journal of Inorganic Chemistry (1434-1948). Vol. 2008 (2008), 1, p. 112-118.
[Artikel, refereegranskad vetenskaplig]

The two compounds [FeII(pyridine)2(N3)2(H2O)] (1) and [FeII(4-acetylpyridine)2(N3)2] (2) were prepared. The X-ray crystal structures show end-to-end (EE) bridging azides in both cases with a 1D Fe-NNN-Fe chain for 1 and a 2D Fe-NNN-Fe net in 2. Both compounds show similar magnetic behaviour where the high-temperature data are consistent with antiferromagnetic couplings and the low-temperature data indicate ferrimagnetic ordering based on spin canting at 20 and 45 K. Compound 2 also shows a hysteresis loop. These findings are compared to the related 3D coordination polymer [Fe(N3)2(4,4'-bipyridine)]. According to network analyses the latter compound was shown to contain the new uninodal six-connected-network topology (510 · 64 · 7)-jsm.

Nyckelord: X-ray structure analysis, coordination polymer, ferromagnetism

Denna post skapades 2007-12-19. Senast ändrad 2014-11-10.
CPL Pubid: 63553


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Institutionen för kemi- och bioteknik, Oorganisk miljökemi (2005-2014)
Institutionen för kemi- och bioteknik, Fysikalisk kemi (2005-2014)


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