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Two 1D carboxylate–bridged magnets displaying solvent-dependent canted antiferromagnetic ordering

Abstract

Two one dimensional (1D) carboxylate–bridged complexes [Mn(TAc)2(H2O)] (1, HTAc=thymine-1-acetic acid ) and [Mn(TAc)2(DMF)]•0.5H2O (2) were synthesized under different solvothermal conditions, which are sensitive to the solvents and pH values. Two complexes have similar 1D chain-like structure but different terminal solvent molecules (H2O for 1 and DMF for 2), and complex 1 can be converted irreversibly to 2 from single crystal to single crystal. The magnetic studies reveal that 1 and 2 display solvent-dependent magnetic behaviors. 1 experiences spin-canted and long-range antiferromagnetic ordering at TC = 38 K and TN= 8 K when decreasing temperature, while 2 only displays long-range antiferromagnetic ordering at TN= 8 K. The difference may be attributed to the terminal H2O in 1 having a greater polarity and smaller steric hindrance than the DMF molecule in 2, resulting in a more compact stacking structure of the 1D chains and more distorted octahedral geometry of MnII ion to facilitate the occurrence of the spin canted behavior.

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Supplementary files

Publication details

The article was received on 28 Apr 2019, accepted on 11 Jun 2019 and first published on 12 Jun 2019


Article type: Paper
DOI: 10.1039/C9CE00640K
CrystEngComm, 2019, Accepted Manuscript

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    Two 1D carboxylate–bridged magnets displaying solvent-dependent canted antiferromagnetic ordering

    Z. Li, W. Wang, D. Wu, C. Zhang, F. Zhang, B. Zhai and J. Zhang, CrystEngComm, 2019, Accepted Manuscript , DOI: 10.1039/C9CE00640K

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