341973-81-7Relevant academic research and scientific papers
Synthesis and structures of some trisorganylstannyl boranes and triorganylstannyl borates
Habereder, Tassilo,Noeth, Heinrich
, p. 789 - 796 (2001)
New stannylboranes were prepared from tetramethylpiperidino dichloroborane or B-bromo-pentamethylborazine with lithium triorganylstannides LiSnR3. Only double stannylation was possible with tmpBCl2 and LiSnMe3, while tmpBCl(SnPh3) was obtained by employing LiSnPh3. This chloride reacted with LiGePh3 to the stannyl germyl borane tmpB(GePh3)(SnPh3). On the other hand, PhMeNBCl2 and an excess of LiSnMe3 gave the borate Li[B(NMePh)(SnMe3)3], which was isolated as a solvate with 4 molecules of THF. The compound is present in the solid state as a solvent separated ion pair. The borate Li(H3BSnMe3) · 2 THF is dimeric in the solid state. Dimerization occurs via two single Li-H-B bridges and a Li-H(B)-Li bridge. The B-Sn bonds in the borates are practically of the same lengths as those in the boranes. In solution all BH bonds of this trihydridoborate are equivalent. Wiley-VCH Verlag GmbH, 2001.
