Abstract
AbstractReaction of SnPh3OH with 3‐(2‐hydroxyphenyl)sulfanylpropenoic acid [H2(o‐hpspa)] yielded [SnPh3(SC)], where SC is deprotonated 3‐sulfanylcoumarin (3‐sulfanyl‐2H‐1‐benzopyran‐2‐one, HSC), by a cyclization process. Similarly, when 3‐(2‐hydroxy‐5‐bromophenyl)‐ and 3‐(2‐hydroxy‐3,5‐dibromophenyl)‐2‐sulfanylpropenoic acids were treated with the same tin hydroxide, the cyclization resulted in [SnPh3(BrSC)] and [SnPh3(Br2SC)], where BrSC and Br2SC are the new ligands formed from the deprotonation of 3‐sulfanyl‐6‐bromocoumarin and 3‐sulfanyl‐6,8‐dibromocoumarin, respectively. The new compounds were characterized by elemental analysis, multinuclear NMR (1H, 13C and 119Sn) and vibrational spectroscopy, and mass spectrometry. Single‐crystal X‐ray structures of these complexes all showed that the tin atom is surrounded by three phenyl C atoms and the S and O atoms of the bidentate ligand in a distorted trigonal‐bipyramidal environment. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)
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