Intramolecularly coordinated organotin(IV) sulphides and their reactivity to iodine

Organotin(IV) sulphides (LSnPhS)(2) (3) and (LSnPh2)(2)S (4) containing O, C, O chelating ligand (L = 2,6-(t BuOCH2)(2)C6H3-) were prepared by reaction of parent organotin chlorides LSnPhCl2 (1) and LSnPh2Cl (2) with Na2(S).9H(2)O in toulene/water. Both sulphides were characterised by the help of elementa; analysis, ESI-mass spectrometry, H-1, C-13 Sn-119 NMR spectroscopy and the molecular structure of 3 was determined by X-ray diffraction techniques. Compounds 3 and 4 react with I-2 to organotin iodides LSnPhI2 (5) and LSnPh2I (6), instead of intended iodolysis of phenyl groups. Triorganotin iodide 6 reacts with the additional molecule of I-2 forming an ionic compound [LSnPh2]I-+(3)- (7), which is unstable in solution and decomposes to Ph2SnI2 and 2,6-(tBuOCH(2))(2)C6H3I (8). (c) 2007 Elsevier B. V. All rights reserved.