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  • 1 Quaid-i-Azam University Department of Chemistry Islamabad Pakistan
  • | 2 King Fahad University of Petroleum & Minerals P.O. Box# 967 31261 Dhahran Kingdom of Saudi Arabia
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Abstract  

Various alkylammonium, dialkylammonium, trialkylammonium and tetraalkylammonium tetraphenylborates were prepared. The thermal decomposition curves of RNH3BPh4, R2NH2BPh4, R3NHBPh4 and R4NBPh4 (whereR=Me, Et,n-Bu) in nitrogen atmosphere indicate that the elimination of volatile matter leads to the formation of both 1∶1 complex of trialkylamino triphenylborane and dialkylamino diphenylborene. Further elimination of volatile matter leads to the formation of borazine at 600–680°C. When borazine is further heated at 980–1090°C an exothermic change indicates the polycyclic condensation of the borazine leading to the formation of boron nitride. The volatile matter evolved in these reactions was measured quantitatively and reaction mechanisms were suggested.

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  • Impact Factor (2019): 2.731
  • Scimago Journal Rank (2019): 0.415
  • SJR Hirsch-Index (2019): 87
  • SJR Quartile Score (2019): Q3 Condensed Matter Physics
  • SJR Quartile Score (2019): Q3 Physical and Theoretical Chemistry
  • Impact Factor (2018): 2.471
  • Scimago Journal Rank (2018): 0.634
  • SJR Hirsch-Index (2018): 78
  • SJR Quartile Score (2018): Q2 Condensed Matter Physics
  • SJR Quartile Score (2018): Q2 Physical and Theoretical Chemistry

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
4
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)