| 1. |
- Belanger-Chabot, Guillaume, et al.
(författare)
-
Ammonia-(Dinitramido)boranes: High-Energy-Density Materials.
- 2015
-
Ingår i: Angewandte Chemie - International Edition. - : Wiley. - 1433-7851 .- 1521-3773. ; 54, s. 11730-11734
-
Tidskriftsartikel (refereegranskat)abstract
- Two ammonia-(dinitramido)boranes were synthesized by the reaction of dinitroamine with ammonia-borane. These compds. are the first reported examples of (dinitramido)boranes. Ammonia-mono(dinitramido)borane is a perfectly oxygen-balanced high-energy-d. material (HEDM) composed of an ammonia-BH2 fuel group and a strongly oxidizing dinitramido ligand. Although it is thermally not stable enough for practical applications, its predicted specific impulse as a solid rocket propellant would be 333 s. Its predicted performance as an explosive matches that of pentaerythtritol tetranitrate (PETN) and significantly exceeds that of trinitrotoluene (TNT). Its structure was established by X-ray crystallog. and vibrational and multinuclear NMR spectroscopy. Addnl., the over-oxidized ammoniabis(dinitramido)borane was detected by NMR spectroscopy. [on SciFinder(R)]
|
|
| 2. |
- Belanger-Chabot, Guillaume, et al.
(författare)
-
[BH3C(NO2)3]-: The First Room-Temperature Stable (Trinitromethyl)borate.
- 2013
-
Ingår i: Angewandte Chemie - International Edition. - : Wiley. - 1433-7851 .- 1521-3773. ; 52:42, s. 11002-11006
-
Tidskriftsartikel (refereegranskat)abstract
- The first stable (trinitromethyl)borate anion [BH3C(NO2)3]- was synthesized and structurally characterized. The BH3 group in [BH3C(NO2)3]- provides a significant increase in stability compared to the previously studied BCl3 analog. The [Na(glyme)2]+, PNP+, and PPh4+ salts of [BH3C(NO2)3]- were successfully isolated and characterized by NMR and vibrational spectroscopy. The PNP+ salt was structurally characterized, confirming the theor. predicted B-C connectivity. [on SciFinder(R)]
|
|
| 3. |
- Belanger-Chabot, Guillaume, et al.
(författare)
-
Dinitramidoborates, a Fascinating Case of Competing Oxygen and Nitrogen Donors and Tautomerism
- 2017
-
Ingår i: Angewandte Chemie. - : Wiley. - 1521-3773 .- 1433-7851. ; 56:36, s. 10881-10885
-
Tidskriftsartikel (refereegranskat)abstract
- Reactions of the BH4- anion with equimolar amounts of HN(NO2)2 or of BH3*THF with K+[N(NO2)2]- produced a mono-substituted [BH3N(NO2)2]- anion which contains a B-N connected dinitramido ligand. The reaction of BH4- with two equivalents of HN(NO2)2 afforded the di-substituted borate anion consisting of two isomers, one with both nitramido ligands attached to B through N and the other one with one ligand attached through N and the other one through O. The disubstituted dinitramidoborates are marginally stable under ambient conditions, and the isomer with two N-connected ligands was characterized by its crystal structure. A tri-substituted borate was tentatively identified by NMR in the reaction of BH4- with a large excess of HN(NO2)2. All anions are highly energetic. Theoretical calculations show that the energy differences between the B-N and B-O tautomers are small, explaining the observed ease of ligand exchange.
|
|
| 4. |
- Christe, Karl O., et al.
(författare)
-
Synthesis and Characterization of Fluorodinitroamine, FN(NO2)2.
- 2014
-
Ingår i: Angewandte Chemie - International Edition. - : Wiley. - 1433-7851 .- 1521-3773. ; 54, s. 1316-1320
-
Tidskriftsartikel (refereegranskat)abstract
- NF3 and N(NO2)3 are known compds., whereas the mixed fluoronitroamines, FN(NO2)2 and F2NNO2, have been unknown thus far. One of these, FN(NO2)2, has now been prepd. and characterized by multinuclear NMR and Raman spectroscopy. FN(NO2)2 is the first known example of an inorg. fluoronitroamine. It is a thermally unstable, highly energetic material formed by the fluorination of the dinitramide anion using NF4+ salts as the preferred fluorinating agent. [on SciFinder(R)]
|
|
| 5. |
- Rahm, Martin, 1982, et al.
(författare)
-
Nitryl Cyanide, NCNO2.
- 2014
-
Ingår i: Angewandte Chemie - International Edition. - : Wiley. - 1433-7851 .- 1521-3773. ; 53:27, s. 6893-6897
-
Tidskriftsartikel (refereegranskat)abstract
- The elusive nitryl cyanide, NCNO2, has been synthesized and characterized. It was prepd. in good yield, isolated by fractional condensation, characterized by NMR and vibrational spectroscopy, and studied by theor. calcns. Nitryl cyanide holds promise as a high energy d. material (HEDM) and might also prove useful as a HEDM building block. The simplicity and inherent stability of nitryl cyanide, together with the known multitude of nitriles in interstellar space, suggest that the compd. might also be a potential candidate for observations in atm. and interstellar chem. [on SciFinder(R)]
|
|
