Opposing magnetic communications in two dinuclear Ni(II) complexes: Ferromagnetic Ni-N-Ni and antiferromagnetic Ni-O-Ni moiety

Patra A, Carrella LM, Vojtisek P, Rentschler E, Manna SC (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Polyhedron Elsevier

Book Volume: 226

Article Number: 116098

DOI: 10.1016/j.poly.2022.116098

Abstract

Two dinuclear Ni(II) complexes [Ni2(L)2(N3)2(H2O)]·2H2O (1) and [Ni2(L)2(NCS)2(H2O)] (2) [HL = 2-methoxy-6-[(2-morpholin-4-yl-ethylimino)-methyl]-phenol] have been synthesized and characterized by single crystal X-ray crystallography and FT-IR spectroscopy. The complexes 1 and 2 are dinuclear and structurally close comparable with metals doubly bridged by a pseudohalide anion (μ1,1-azido and N,N-thiocyanato, respectively) and a μ-(phenoxido). The two HL ligands behave differently with N2O2 and N2O donor set towards the octahedral metal centres. Magnetic studies indicate an overall ferromagnetic interaction between nickel(II) centers in both the complexes. The experimental data can be simulated using the isotropic exchange Hamilton operator Ĥ = −2JS1S2 with following parameters J = +7.9(4) cm−1, g1,2 = 2.246(5), D1,2 = 2.35(10) cm−1 for complex 1 and J = +13.3(5) cm−1, g1,2 = 2.102(4), D1,2 = 4.18(12) cm−1, for complex 2. The structures of the complexes were theoretically optimized in their ground state and the experimental UV–vis electronic absorption spectral data have been compared with the theoretical results obtained from TD-DFT calculation.

Involved external institutions

Vidyasagar University / বিদ্যাসাগর বিশ্ববিদ্যালয় IN India (IN) Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) Jan Evangelista Purkyně University in Ústí nad Labem / Univerzita Jana Evangelisty Purkyně v Ústí nad Labem (UJEP) CZ Czech Republic (CZ)

How to cite

APA:

Patra, A., Carrella, L.M., Vojtisek, P., Rentschler, E., & Manna, S.C. (2022). Opposing magnetic communications in two dinuclear Ni(II) complexes: Ferromagnetic Ni-N-Ni and antiferromagnetic Ni-O-Ni moiety. Polyhedron, 226. https://dx.doi.org/10.1016/j.poly.2022.116098

MLA:

Patra, Apu, et al. "Opposing magnetic communications in two dinuclear Ni(II) complexes: Ferromagnetic Ni-N-Ni and antiferromagnetic Ni-O-Ni moiety." Polyhedron 226 (2022).

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