Short communication: Thermal stability of the diazohydroborate [1-N2B10H9]−: degradation to [B20H18]2− anion

✍ Scribed by Daoud Naoufal; Bernard Bonnetot; Henri Mongeot

• Publisher: John Wiley and Sons
• Year: 2003
• Tongue: English
• Weight: 88 KB
• Volume: 17
• Category: Article
• ISSN: 0268-2605
• DOI: 10.1002/aoc.424

✦ Synopsis

Abstract

The thermal stability of the monodiazohydroborate NMe~4~[1‐N~2~B~10~H~9~] was studied by thermogravimetric analysis. Under two different atmospheres (air and argon), the thermal decomposition starts at a temperature between 140 and 160 °C. The decomposition residue obtained was separated on a silica gel column. ^11^B NMR, IR and electrospray mass spectroscopy analyses of the different fractions separated showed that the above decomposition produces (NMe~4~)~2~[B~20~H~18~] as major product (90%), along with smaller amounts of residual NMe~4~[1‐N~2~B~10~H~9~] (5%), (NMe~4~)~2~[B~12~H~12~] and boric acid. Copyright © 2003 John Wiley & Sons, Ltd.