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

• Published in: Journal of structural chemistry 2017-12, Vol.58 (8), p.1656-1662
• Main Authors: Liu, Y., Zhou, Y.-H., Liao, X.-L., Man, L.-M., Wang, B.-W., Zhou, J.-R., Ni, C.-L.
• Format: Article
• Language: English
• Subjects: Anions; Atomic; Atomic/Molecular Structure and Spectra; Cations; Chemistry; Chemistry and Materials Science; Copper; Coupling (molecular); Crystal structure; Differential thermogravimetric analysis; Diffraction; Ferromagnetism; Functional groups; Hydrogen bonds; Inorganic Chemistry; Magnetic permeability; Magnetic properties; Molecular; Optical and Plasma Physics; Physical Chemistry; Solid State Physics; Stability analysis; Thermal analysis; Thermal stability; Visible spectrum
• ISSN: 0022-4766; 1573-8779
• DOI: 10.1134/S0022476617080248

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.