C. Vatsa, V. Jain, T. Kesavadas
Jun 18, 1991
Citations
0
Influential Citations
56
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract Reactions of diorganotin oxides with 2-thiophene- or 2-furan-carboxylic acids in 1:2 stoichiometry yielded complexes of the type [R 2 Sn(O 2 CC 4 H 3 E) 2 ] (I) (R = Me, Et, n Pr, n Bu; E = O or S). These complexes, on treatment with R 2 SnCl 2 afforded the chloro complexes, [R 2 Sn(Cl)(O 2 CC 4 H 3 E)] (II) (R = Me, n Bu, E = S; R = n Pr, n Bu, E = O). On hydrolysis, complexes of the type I were converted into the corresponding dicarboxylatotetraorganodistannoxanes. All complexes were characterized by elemental analyses, IR and multinuclear magnetic resonance ( 1 H, 13 C and 119 Sn) data. The crystal structure of [Et 2 Sn(O 2 CC 4 H 3 S) 2 ] shows the Sn atom to exist in a skew-trapezoidal planar geometry defined by two asymmetrically coordinating carboxylate ligands (Sn–O 2.143(5), 2.556(5); 2.129(5), 2.473(5) A) and two ethyl groups (Sn–C 2.110(9), 2.124(9) A; C–Sn–C 151.7(4)°). In the crystal lattice, there is a weak Sn ⋯ O interaction of 2.891(6) A between centrosymmetrically related molecules.