作者:Jens Beckmann、Klaus Jurkschat、Stephanie Rabe、Markus Schürmann、Dainis Dakternieks
DOI:10.1002/1521-3749(200103)627:3<458::aid-zaac458>3.0.co;2-n
日期:2001.3
The syntheses of the asymmetrically substituted tetraorganodistannoxanes [t-Bu-2(X)SnOSn(Y)(CH2SiMe3)(2)](2) (1, X = Y = OH; 2, X = Cl, Y = OH; 3, X = Y = Cl) are re ported-and their structures in solution and in the solid state are characterized by multinuclear NMR spectroscopy and single crystal X-ray analyses. In toluene, the tetrahydroxy-substituted derivative 1 is in equilibrium with the organotin oxides : cyclo-[t-Bu2SnOSn(CH2SiMe3)(2)}(2)O] (4), cyclo-[(Me3SiCH2)(2)Sn(OSnt-Bu-2)(2)O] (5), and cyclo-(t-Bu2SnO)(3), and some additional, undefined species containing pentacoordinated tin atoms. In contrast, the dihydroxydichlorosubstituted derivative 2 is inert in solution.