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Crystal structure and magnetic properties of a hybrid compound: Disubstituted benzyl dimethylaminopyridinium bis(maleonitriledithiolate)cuprate(II)

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Abstract

Hybrid compound 1-(2-fluro-4-bromobenzyl)-4-dimethylaminopyridium bis(maleonitriledithiolate) cuprate(II) [2F4BrBzDMAP]2[Cu(mnt)2] is prepared and characterized by X-ray diffraction. The compound crystallizes in the triclinic system with the space group P-1. The unit cell dimensions are a = 8.9813(11), b = 9.0794(12), c = 13.1082(17) Å and α = 88.179(2)°, β = 81.397(2)°, γ = 70.736(1)° with Z = 1. The structure consists of two [2F4BrBzDMAP]+ cations and one [Cu(mnt)2]2– anion. The cations of the title compound stack into a one-dimensional column through p∙∙∙π and π∙∙∙π interactions, and the anions (A) and cations (C) are arranged alternatively into one 1D column in an ∙∙∙A–CC–A–CC–A∙∙∙ sequence through C–H∙∙∙N hydrogen bonds and S∙∙∙N interactions. The presence of functional groups is confirmed by the FT-IR spectrum, and optical absorption is ascertained by the recorded UV-Visible spectrum. The thermal stability of the compound is determined by thermogravimetric and differential thermal analyses. The variable-temperature magnetic susceptibility measurement shows that the compound exhibits a weak ferromagnetic coupling behavior when the temperature is lowered.

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Correspondence to C.-L. Ni.

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Original Russian Text © 2017 Y. Liu, Y.-H. Zhou, X.-L. Liao, L.-M. Man, B.-W. Wang, J.-R. Zhou, C.-L. Ni.

The text was submitted by the authors in English. Zhurnal Strukturnoi Khimii, Vol. 58, No. 8, pp. 1706-1712, November-December, 2017.

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Liu, Y., Zhou, YH., Liao, XL. et al. Crystal structure and magnetic properties of a hybrid compound: Disubstituted benzyl dimethylaminopyridinium bis(maleonitriledithiolate)cuprate(II). J Struct Chem 58, 1656–1662 (2017). https://doi.org/10.1134/S0022476617080248

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