New insights in asymmetric tetraorganodistannoxane ladder formation. A NMR-spectroscopic and crystallographic study

Citation
J. Beckmann et al., New insights in asymmetric tetraorganodistannoxane ladder formation. A NMR-spectroscopic and crystallographic study, Z ANORG A C, 627(3), 2001, pp. 458-464
Citations number
26
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
ISSN journal
00442313 → ACNP
Volume
627
Issue
3
Year of publication
2001
Pages
458 - 464
Database
ISI
SICI code
0044-2313(200103)627:3<458:NIIATL>2.0.ZU;2-D
Abstract
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 st ate 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-Bu2Sn{OSn(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 at oms. In contrast, the dihydroxydichlorosubstituted derivative 2 is inert in solution.