CRYSTAL STRUCTURE AND MAGNETIC PROPERTIES OF A HYBRID COMPOUND: DISUBSTITUTED BENZYL DIMETHYLAMINOPYRIDINIUM BIS(MALEONITRILEDITHIOLATE)CUPRATE(II)
Y. Liu, Y.-H. Zhou, X.-L. Liao, L.-M. Man, B.-W. Wang, J.-R. Zhou, C.-L. Ni
College of Materials and Energy, Institute of Biomaterial, South China Agricultural University, Guangzhou, P. R. China
niclchem@scau.edu.cn
Ключевые слова: substituted benzyl dimethylaminopyridium, bis(maleonitriledithiolate) copper(II) anion, weak interactions, magnetic properties
Страницы: 1706-1712
Аннотация
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 a = 88.179(2)°, b = 81.397(2)°, g = 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⋯p and p⋯p 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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