An exchange interaction of the antiferromagnetic nature in benzoate bridged Mn(ii) chains?
New Journal of Chemistry Pub Date: 2022-10-31 DOI: 10.1039/D2NJ04131F
Abstract
Two novel 1D chains based on heptacoordinated Mn(II) ions bridged by variously derived benzoate ligands were prepared. The unusual structures of [MnII(L1)(L2)4]n1 and [MnII(L1)(L3)4]n2 (where L1 = 2,6-dimethanolpyridine, L2 = 3,5-dinitrobenzoic acid, L3 = 4-chloro-3,5-dinitrobenzoic acid) were confirmed by single-crystal X-ray diffraction. Within the structures a zig zag pattern appears from perpendicularly located 2,6-dimethanolpyridines to sheets of benzoic acids. Both compounds possess the {MnNO6} chromophore and show paramagnetic behaviour with an exchange interaction of antiferromagnetic nature. Weak interaction constants J/hc = ?0.54 cm?1 (1) and J/hc = ?0.58 cm?1 (2) between high spin (S = 5/2) magnetic centres have been revealed using a finite-ring Hamiltonian model.
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Journal Name：New Journal of Chemistry
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CAS no.: 89640-58-4
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