Synthesis, structure and magnetic properties of a cobalt(II) mesoxalate 1D coordination polymer

Mesoxalate ligand (H2mesox)2−, the conjugate base of the mesoxalic acid (2,2’‐dihydroxyl‐malonic acid) reacts with cobalt (II) ions to form the 1‐D coordination polymer {[Co(H2mesox)(H2O)2] ⋅ H2O}n. This compound displays a structure based on homochiral polymeric chains which stack together in an AA...

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Bibliographic Details
Published in:Zeitschrift für anorganische und allgemeine Chemie (1950) 2021-03, Vol.647 (5), p.485-489
Main Authors: Gil‐Hernández, Beatriz, Sanchiz, Joaquín
Format: Article
Language:English
Subjects:
Cobalt
Cobalt (II) complexes
Coordination compounds
Coordination polymers
Crystallization
Hydrogen bonding
Ising model
Low temperature
Magnetic properties
Mesoxalic acid
Water chemistry
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Summary:Mesoxalate ligand (H2mesox)2−, the conjugate base of the mesoxalic acid (2,2’‐dihydroxyl‐malonic acid) reacts with cobalt (II) ions to form the 1‐D coordination polymer {[Co(H2mesox)(H2O)2] ⋅ H2O}n. This compound displays a structure based on homochiral polymeric chains which stack together in an AABB fashion through hydrogen bonding by both coordination and crystallisation water molecules. Although the magnetic properties for such a Co(II) compound are difficult to interpret in the whole temperature range, at low temperatures the Co(II) behaves as an S=1/2 effective spin and equation derived by Fisher from the Ising model was applied to analyse the data in the 4–40 K range. The magnetic interactions in this compound are compared with the magnetic interactions displayed by similar compounds reported in the literature.
ISSN:0044-2313
1521-3749
DOI:10.1002/zaac.202000431