Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0022-328X(02)01705-9
Title: A novel route for the preparation of dimeric tetraorganodistannoxanes
Authors: Beckmann, J.
Dakternieks, D.
Kuan, F.S.
Tiekink, E.R.T. 
Keywords: 119Sn-NMR spectroscopy
Tetraorganodistannoxane
Tin
X-ray crystallography
Issue Date: 1-Oct-2002
Source: Beckmann, J., Dakternieks, D., Kuan, F.S., Tiekink, E.R.T. (2002-10-01). A novel route for the preparation of dimeric tetraorganodistannoxanes. Journal of Organometallic Chemistry 659 (1-2) : 73-83. ScholarBank@NUS Repository. https://doi.org/10.1016/S0022-328X(02)01705-9
Abstract: 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. © 2002 Elsevier Science B.V. All rights reserved.
Source Title: Journal of Organometallic Chemistry
URI: http://scholarbank.nus.edu.sg/handle/10635/92980
ISSN: 0022328X
DOI: 10.1016/S0022-328X(02)01705-9
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