Abstract
Two tetranuclear Ni(II) clusters, [Ni(L1)(µ3-OCH3)(CH3OH)]4·5CH3OH (1) and [Ni(L2)(µ3-OCH3)(CH3OH)]4 (2) (HL1 = methyl 2-hydroxy-3-methoxybenzoate; HL2 = 4-(1,1,3,3-tetramethylbutyl)phenyl salicylate) were synthesized and characterized by X-ray crystallography and magnetic properties. Both complexes have [Ni4O4] cubane cores assembled with four triply-bridged methoxy oxygens. The temperature-dependent magnetic susceptibilities for 1 and 2 show ferromagnetic interactions between Ni(II) ions. The best fit parameters for their magnetic behaviors are J1 = + 9.32 cm−1, J2 = − 1.66 cm−1 and g = 2.24 for 1, and J1 = + 9.82 cm−1, J2 = − 1.98 cm−1, g = 2.21 for 2, respectively.
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Acknowledgements
This work was also supported by KAKENHI Grant-in-Aid for Scientific Research (A) JP17H01200. This work was supported by JSPS Grant-in-Aid for Young Scientists (B) JP15K17833, JSPS Grant-in-Aid for Scientific Research on Innovative Areas (Dynamical Ordering & Integrated Functions JP16H00777, Mixed Anion JP17H05485). This work was partially supported by the Cooperative Research Program of ‘Network Joint Research Centre for Materials and Devices’.
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Authors dedicate this manuscript to Prof. Karsten Gloe in celebration of his 70th birthdays.
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Kusumoto, S., Kobayashi, F., Ohtani, R. et al. Triply methoxo-bridged tetranuclear nickel cubane complexes with salicylate esters. J Incl Phenom Macrocycl Chem 94, 195–199 (2019). https://doi.org/10.1007/s10847-018-0798-9
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DOI: https://doi.org/10.1007/s10847-018-0798-9