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Issue 10, 2010
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Canted antiferromagnetic behaviours in isostructural Co(ii) and Ni(ii) frameworks with helical lvt topology

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Abstract

The hydrothermal reaction of the versatile ligand 5-methyl-1,2,4-triazolo[1,5-a]pyrimidin-7(4H)-one (Hmtpo), and cobalt/nickel acetate afforded two isostructural Co(II) and Ni(II) frameworks [M(mtpo)2(H2O)]n (M = Co (1Co) or Ni (2Ni)). Both of them consist of heterochiral helical meshes fused together into a non-interpenetrated lvt topological network containing only planar four-coordinate nodes. The frameworks can be rationalized to a rare 6-c crs net if the water-donated hydrogen-bonds are considered. Two isomorphous complexes exhibit spin-canted antiferromagnetism, with the critical temperature Tc of ca. 3.0 K for 1Co and 19 K for 2Ni. The additional magnetic measurements (after the removal of guest molecules), IR, TGA and XRPD of the complexes were also discussed.

Graphical abstract: Canted antiferromagnetic behaviours in isostructural Co(ii) and Ni(ii) frameworks with helical lvt topology

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Article information


Submitted
05 Nov 2009
Accepted
29 Mar 2010
First published
12 May 2010

CrystEngComm, 2010,12, 2938-2942
Article type
Paper

Canted antiferromagnetic behaviours in isostructural Co(II) and Ni(II) frameworks with helical lvt topology

Q. Lin, J. Zhang, X. Cao, Y. Yao, Z. Li, L. Zhang and Z. Zhou, CrystEngComm, 2010, 12, 2938
DOI: 10.1039/B923235D

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