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The reaction of decaborane with hydrazoic acid: A novel access to azaboranes

✍ Scribed by J. Müller; P. Paetzold; R. Boese

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
454 KB
Volume
1
Category
Article
ISSN
1042-7163

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✦ Synopsis

The reaction of BfoH12(SMe2)2 (1) with HN3 yields arachno-BfoHf AN3)(NH2) (2), a product with a p N H 2 group. Compound 2 can be hydrolysed to give the known arachno-B9Hf3(NH3) (3). nido-NB9Hf ,(N3) (4) is formed from 2 by a deprotonationlprotonation sequence. The azaborane nido-NBfd13 (5) is a product of the thermolysis of 2. The structures of 2-5 are elucidated by 2-0 COSY 'B-IIB NMR spectra; the structure of 2 is also elucidated by an X-ray structure analysis.

An access to larger azaboranes NB,H, (x 2 8) is gained by the reaction of BI0Hl4 with NaN02 or with Me2N-NS [l], whereas organic derivatives of smaller azaboranes (x 5 6) are available starting from iminoboranes RB=NR' [2]. In this paper we report a novel synthesis of larger azaboranes.

uruchno-BIOHf~(N3)(NH~): THE KEY SUBSTANCE

The reaction of BloH12(SMe2)2 (1) [31 with excess HN, gives BIOH12(N3)(NH2) (2) in 60% yield (Equation l ) . BloHI2(SMe2)2 + 2 HN3 -BIoHIZ(NANHZ)

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