2954-94-1Relevant academic research and scientific papers
A novel route for the preparation of dimeric tetraorganodistannoxanes
Beckmann, Jens,Dakternieks, Dainis,Kuan, Fong Sheen,Tiekink, Edward R.T
, p. 73 - 83 (2007/10/03)
The reaction of polymeric diorganotin oxides, (R2SnO)n (R = Me, Et, n-Bu, n-Oct, c-Hex, i -Pr, Ph), with saturated aqueous NH4X (X = F, Cl, Br, I, OAc) in refluxing 1,4-dioxane afforded in high yields dimeric tetraorganodistannoxanes, [R2(X)SnOSn(X)R2]2, and in a few cases diorganotin dihalides or diacetates, R2SnX2. The reported method appears suitable for the synthesis of fluorinated tetraorganodistannoxanes. Identification of [R2(OH)SnOSn(X)R2]2 (R=n-Bu; X = Cl, Br) and [R2(OH)SnOSn(X)R2] [R2(X)SnOSn(X)R2] suggest a serial substitution mechanism starting from [R2(OH)SnOSn(OH)R2]2. X-ray crystal structure determinations are reported for [Me2(AcO)SnOSn(OAc)Me2]2 (29a), [i-Pr2(Br)SnOSn(Br)i-Pr2]2 (20a), [c-Hex2 (F)SnOSn(F)c-Hex2]2 (5a) and [c-Hex2(F)SnOSn(Cl)c-Hex2]2 (36), respectively. These show the presence of a central (R2Sn)2O2 core that is connected, via the oxygen atoms, to R2Sn entities. Acetate (29a) or halides (5a, 20a, 36) complete the coordination about the tin centres.
Electrophilic cleavage of tin-alicyclic and tin-aryl bonds involving the synthesis of cyclohexyl-tin, -tellurium and -antimony compounds - Part I
Singhal, Kiran
, p. 542 - 544 (2007/10/02)
Cyclohexyl-tin, -tellurium and -antimony halides have been obtained in good yields by the electrophilic cleavage of Sn-C bond(s) from symmetrical and unsymmetrical cyclohexyl tins, CynPnPh4-n (n = 1, 2, 4) employing Br2, I2, ICl, IBr, TeCl4 and SbCl5 in CCl4 under mild conditions.
