Heterometallic 3d–4f coordination polymers: Synthesis, characterization and magnetic properties of 1D zigzag chains containing samarium and terbium

Reaction of the copper precursor [Cu(MeOsaltn)(H 2O)] (H 2MeOsaltn = N, N′-bis(3-methoxysalicylidene)-1,3-diaminopropane) with Ln(NO 3) 3·6H 2O (Ln = Sm and Tb) and pyrazine-2,3-dicarboxylic acid (H 2pyrdic) results in the formation of 1D zigzag chains with the general formula of [Cu(MeOsaltn)Ln(NO...

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Bibliographic Details
Published in:Solid state sciences 2009-04, Vol.11 (4), p.766-771
Main Authors: Ion, Adrian E., Spielberg, Eike T., Sorace, Lorenzo, Buchholz, Axel, Plass, Winfried
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Coordination polymer
Copper
Exact sciences and technology
Lanthanide
Magnetic properties
Physics
Samarium
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
Terbium
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Summary:Reaction of the copper precursor [Cu(MeOsaltn)(H 2O)] (H 2MeOsaltn = N, N′-bis(3-methoxysalicylidene)-1,3-diaminopropane) with Ln(NO 3) 3·6H 2O (Ln = Sm and Tb) and pyrazine-2,3-dicarboxylic acid (H 2pyrdic) results in the formation of 1D zigzag chains with the general formula of [Cu(MeOsaltn)Ln(NO 3)(pyrdic)] n · nDMF. X-ray crystal structures reveal that the samarium and terbium compounds are isostructural and crystalize in the orthorhombic space group Pbcn. The chains are composed of heterodinuclear copper–lanthanide building blocks which are linked by the pyrazine-2,3-dicarboxylate bridging units. Temperature-dependent susceptibility measurements indicate antiferromagnetic exchange interactions for the samarium–copper chain whereas for the terbium–copper compound ferromagnetic interactions are observed. [Display omitted]
ISSN:1293-2558
1873-3085
DOI:10.1016/j.solidstatesciences.2008.05.019