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Tryptophan moiety ligand based tri/tetranuclear Ni(ii) complexes: syntheses, structure and magnetic properties

Mahish MK, Carrella LM, Patra A, Saren D, Zangrando E, Vojtisek P, Rentschler E, Manna SC (2022)

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Publication Type: Journal article

Publication year: 2022

Journal

Book Volume: 46

Pages Range: 16899-16906

Journal Issue: 35

DOI: 10.1039/d2nj02467e

Abstract

Tetra/trinuclear Ni(ii) complexes, namely [Ni4(l)4(H2O)4]·5(dmf)·7(H2O) (1) and [Ni3(l)2(bz)2(dmf)2(H2O)2] (2) [H2L = N-(2-(hydroxy)-3-methoxybenzylidene)tryptophan); dmf = dimethyl formamide, bz = benzoate anion], have been synthesized and characterized by X-ray single crystal structure determination. The structural characterization discloses a tetranuclear Ni(ii) complex for 1, whereas in complex 2 the competition between the coordination ability of the benzoate anion and the bridging mode of the Schiff base leads to a trinuclear species. Two of the chiral ligands in 1, acting as pentadentate, connect all metal centers, while the other two act as tri-chelating towards the side located nickel centers. On the other hand, in complex 2 the two Schiff bases act as tetradentate connecting the nickel centers in pairs in addition to the benzoate anions. Variable-temperature magnetic susceptibility data, collected in the temperature range of 2-300 K under an applied field of 0.1 Tesla, indicate weak antiferromagnetic interactions in both the complexes in agreement with Ni-O-Ni bridging angles larger than 100° measured within the molecular structures.

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How to cite

APA:

Mahish, M.K., Carrella, L.M., Patra, A., Saren, D., Zangrando, E., Vojtisek, P.,... Manna, S.C. (2022). Tryptophan moiety ligand based tri/tetranuclear Ni(ii) complexes: syntheses, structure and magnetic properties. New Journal of Chemistry, 46(35), 16899-16906. https://doi.org/10.1039/d2nj02467e

MLA:

Mahish, Manas Kumar, et al. "Tryptophan moiety ligand based tri/tetranuclear Ni(ii) complexes: syntheses, structure and magnetic properties." New Journal of Chemistry 46.35 (2022): 16899-16906.

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