Use of ligand probes in light scattering. 2. Structure of labile, six-coordinate organotin(IV) complexes having octyl and cyclohexyl groups

Article abstract of DOI:10.1021/ic00136a031

The molecular optical anisotropy has been determined for the ligands 1,3-diphenylpropane-1,3-dione (dibenzoylmethane) and tropolone in cyclohexane at 20°C, by means of a depolarized Rayleigh light-scattering method. Illumination at 632.8 nm was used. Complexes of the type R₂SnCh₂ have been synthesized (R = C₈H₁₇, C₆H₁₁; Ch^- = dibenzoylmethanate). Two narrow-band-pass filters of differing breadth, 19 and 45 cm^-1, respectively, were employed to allow separation of the broad, transient, collision-induced contributions from that of the intrinsic molecular scattering, which is observed as the much narrower reorientational Rayleigh component of the solutions. The depolarized scattering data show conclusively that the complexes possess a trans structure with coplanar dibenzoylmethanate rings.