Abstract
The electrocrystallization, structural and magnetic characterization of a copper(II) complex with the anti-inflammatory drug sulindac [HSuln = 2-[(3Z)-6-fluoro-2-methyl-3-[(4-methylsulfanylphenyl)methylidene]inden-1-yl]acetic acid], with formula [Cu2(C20H16FO3S)4]∙3H2O, is reported. Single crystals were grown directly on the surface of a sacrificial copper wire and were suitable for X-ray diffraction analysis. The complex is a 1D polymeric coordination complex consisting of paddlewheel moieties, formed by four sulindacate units bridging two copper(II) ions, and three disordered water molecules occupying the voids in the unit cell, with axially connected units through the neighboring sulfinyl oxygen atom located in the phenyl moiety. The complex presents a strong antiferromagnetic exchange interaction. Variable temperature magnetic susceptibility displays an unusual increase in the magnetic moment with decreasing temperature from 60 to 30 K, which may be indicative of the presence of a small amount of a monomeric Cu(II) species or traces of molecular oxygen. The product was additionally characterized by FTIR, UV–Vis spectroscopy, and TGA/DTA-DSC.
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