Synthesis, characterization and antibacterial activity of 3‐(2‐methoxyphenyl)‐2‐sulfanylpropenoic acid and di‐isopropylammonium [3‐(2‐methoxyphenyl)‐2‐sulfanylpropenoato] triphenylstannate(IV). The crystal structure of [HQ][SnPh3(o‐mpspa)]

Reaction of 3-(2-methoxyphenyl)-2-sulfanylpropenoic acid [H2(o-mpspa)] with SnPh3OH in the presence of di-isopropylamine resulted in the formation of the complex [HQ][SnPh3(o-mpspa)] (where HQ = di-isopropylammonium cation and o-mpspa = 3-(2-methoxyphenyl)-2-sulfanylpropenoato), which was characterized by mass spectrometry and vibrational spectroscopy, as well as by 1H, 13C and 119Sn NMR spectroscopy. The single-crystal X-ray structural analysis of the new complex shows a trigonal-bipyramidal coordination geometry around the Sn atom where o-mpspa behaves as a bidentate chelating ligand. Dimeric units arise from the existence of NH…O hydrogen bonds between the NH2 group of the di-isopropylammonium cation and the oxygen atoms of the two neighbouring carboxylato groups. The bacteriostatic activity of the complex is also reported. Copyright © 2007 John Wiley & Sons, Ltd.