SYNTHESIS, X-RAY-DIFFRACTION ANALYSIS AND NMR-STUDIES OF (Z)-2-METHYL-3-TRIPHENYLSTANNYL-3-PENTENE-2-OL

The synthesis of (Z)-2-methyl-3-triphenylstannyl-3-pentene-2-ol and it s characterization by an X-ray diffraction study and multinuclear NMR are reported. The tin atom exhibits a distorted tetrahedral SnC4 geome try with the four Sn-C bond distances experimentally equivalent. The s light distortion from the ideal tetrahedral geometry is because of the presence of a weak intramolecular HO --> Sn interaction of 3.012(3) a ngstrom which produces a loose four-membered ring. The title compound was characterized in solution by H-1, C-13 and Sn-119 NMR, and the per sistence of the weak intramolecular HO --> Sn coordination in solution was revealed by C-13 and Sn-119 secondary isotope multiplet of partia lly labelled entities (SIMPLE-NMR) experiments.