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Synthesis, X-ray Crystal Structure, and Stability of Novel Trialkylalane−Triorganylbismuthane Adducts

✍ Scribed by Andreas Kuczkowski; Stephan Schulz; Martin Nieger

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
231 KB
Volume
2001
Category
Article
ISSN
1434-1948

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✦ Synopsis

Reactions of trialkylalanes AlR 3 (R = Me, Et, tBu) and triorganylbismuthanes BiRЈ 3 (RЈ = iPr, SiMe 3 ) were performed and the products investigated both in solution and in the solid state. Et 3 Al-Bi(SiMe 3 ) 3 (2), tBu 3 Al-Bi(SiMe 3 ) 3 (3), and tBu 3 Al-Bi(iPr) 3 ( 6) are stable Lewis acid-base adducts in pure form while only 3 and 6 are adducts in solution. Their dissociation enthalpies, as determined by temperature-dependent NMR spectroscopy, were estimated to 6.3 (3) and 6.9 kcal/mol (6). In contrast, Me 3 Al-Bi(SiMe 3 ) 3 (1),

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