CRYSTAL STRUCTURE AND MAGNETIC PROPERTIES OF A HYBRID COMPOUND: DISUBSTITUTED BENZYL DIMETHYLAMINOPYRIDINIUM BIS(MALEONITRILEDITHIOLATE)CUPRATE(II)

摘要

Hybrid compound 1-(2-fluro-4-bromobenzyl)-4-dimethylaminopyridium bis(maleonitrile-dithiolate)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),6 = 9.0794(12),с = 13.1082(17)A 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 ID column in an ···A-CC-A-CC-A···sequence through С-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.