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- Title
Synthesis, Structure and Magnetic Properties of Low-Dimensional Copper(II) trans -1,4-cyclohexanedicarboxylate.
- Authors
Demakov, Pavel A.; Ovchinnikova, Anna A.; Dorovatovskii, Pavel V.; Lazarenko, Vladimir A.; Lavrov, Alexander N.; Dybtsev, Danil N.; Fedin, Vladimir P.
- Abstract
A reaction between copper(II) nitrate and trans-1,4-cyclohexanedicarboxylic acid (H2chdc) carried out under hydrothermal conditions led to a new metal-organic coordination polymer [Cu2(Hchdc)2(chdc)]n. According to single-crystal XRD data, the compound is based on bi-nuclear paddlewheel-type carboxylate blocks that are joined with polymeric chains due to the (μ3-κ1:κ2) coordination of carboxylate groups. The chains are interconnected by chdc2− bridging ligands into layers containing free COOH groups of terminal Hchdc−. The neighboring layers adopt a RCOOH···OOCR hydrogen bond-assisted arrangement into a dense-packed structure. Magnetization measurements showed the presence of a strong antiferromagnetic exchange interaction (J/kB = −495 K) inside the bi-nuclear blocks. At the same time, no significant interaction was found between the {-Cu2(OOCR)4-} units in spite of their polymeric in-chain packing. Patterns of magnetic behavior of [Cu2(Hchdc)2(chdc)]n were thoroughly analyzed and explained from a structural point of view.
- Subjects
MAGNETIC structure; MAGNETIC properties; EXCHANGE interactions (Magnetism); COORDINATION polymers; BRIDGING ligands; COPPER
- Publication
Crystals (2073-4352), 2024, Vol 14, Issue 6, p555
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst14060555