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New Insights in Asymmetric Tetraorganodistannoxane Ladder Formation. A NMR‐Spectroscopic and Crystallographic study
Author(s) -
Beckmann Jens,
Jurkschat Klaus,
Rabe Stephanie,
Schürmann Markus,
Dakternieks Dainis
Publication year - 2001
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200103)627:3<458::aid-zaac458>3.0.co;2-n
Subject(s) - chemistry , derivative (finance) , nuclear magnetic resonance spectroscopy , tin , stereochemistry , crystal structure , toluene , solid state , medicinal chemistry , crystallography , organic chemistry , financial economics , economics
The syntheses of the asymmetrically substituted tetraorganodistannoxanes [ t ‐Bu 2 (X)SnOSn(Y)(CH 2 SiMe 3 ) 2 ] 2 ( 1 , X = Y = OH; 2 , X = Cl, Y = OH; 3 , X = Y = Cl) are reported 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 ‐Bu 2 Sn{OSn(CH 2 SiMe 3 ) 2 } 2 O] ( 4 ), cyclo [(Me 3 SiCH 2 ) 2 Sn(OSn t ‐Bu 2 ) 2 O] ( 5 ), and cyclo ‐( t ‐Bu 2 SnO) 3 , and some additional, undefined species containing pentacoordinated tin atoms. In contrast, the dihydroxydichloro‐substituted derivative 2 is inert in solution.