The New Phosphinoamines HN[P(CF3)2]2, CH3N[P(CF3)2]2, and N[P(CF3)2]31

Burg, Anton B.; Heners, Jürgen

doi:10.1021/ja01092a014

Cited by 20 publications

(5 citation statements)

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“…Its intensity passes through a maximum at 200 °C and then decreases until it practically disappears at 500 °C. It has been associated with hydroxy groups linked to phosphorus in P−N−P bonds of cyclic phosphonitrilates . Its decrease at high temperatures is associated with the nitrogen loss in the catalysts, since this band has only been observed in AlPON solids when the nitrogen content is higher than 17.5 wt % …”

Section: Resultsmentioning

confidence: 99%

Platinum Aluminophosphate Oxynitride (Pt−AlPON) Catalysts. Consequences of Surface Hydrolysis and Heating Processes on the Structure

Grange

1999

J. Phys. Chem. B

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Consecutive heating/cooling cycles over a platinum aluminophosphate oxynitride (Pt−AlPON) catalyst with a high nitrogen content (17.8 wt %) have been studied by diffuse reflectance infrared spectroscopy (DRIFTS). Heating steps to 500 °C produces the desorption of part of the nitrogenous species of the catalyst (NH4 +, NH3, −NH2, −NH−) as gaseous ammonia. During the treatment at room temperature, N2 saturated with water produces a hydrolysis reaction that transforms part of the bulk nitride ions into NH4 + surface species. These species are easily removed from the catalyst surface during the next heating step. As a result of combined successive hydrolysis/heating processes, the catalyst loses practically all its nitrogen content, reaching a structure similar to that of its AlPO4 precursor.

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Section: Resultsmentioning

confidence: 99%

Platinum Aluminophosphate Oxynitride (Pt−AlPON) Catalysts. Consequences of Surface Hydrolysis and Heating Processes on the Structure

Grange

1999

J. Phys. Chem. B

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“…It has been reported elsewhere that silicon diimide gels also retained substantial amounts of this ionic liquid after ethanol washing, which suggests that it would play an active role in forming the T-N network of these materials [9]. Moreover, an intense and asymmetric band is observed at 930 cm -1 , which could be attributed to the antisymmetric stretching of P-N-T [15], where T could be either P or Al and 1620 cm -1 correspond respectively to NH4 + , terminal -NH2 groups associated to phosphorus [16] and ammonia, although the last band could also be contributed by water [11].…”

Section: As-prepared Samplesmentioning

confidence: 63%

Direct synthesis of bulk AlPON basic catalysts in ionic liquids

Saugar

Márquez‐Álvarez

Pérez‐Pariente

2017

Journal of Catalysis

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In this work, the direct synthesis of materials formed by a network of Al, P, N and O atoms (AlPON) from the ammonolysis of P and N molecular precursors in an ionic liquid is reported. The as-made samples can be treated under ammonia at high temperature to remove the ionic liquid retained after synthesis. The resulting amorphous materials have high porosity and surface area. The P atoms of the skeleton are involved in single and double bonds with N atoms, whereas bridged-NHand terminal P-NH2 groups are also present. However, no evidence for Al-N bonds has been found. It has been shown by pyrrole adsorption that these materials exhibit basic properties, showing a basic strength higher than that of SiN materials, but weaker than hydrotalcites. Nevertheless, they are active and very selective catalysts for the Michael addition reaction between malononitrile and chalcone.

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“…These observations are in keeping with the fact that simple covalent compounds of arsenic have lower thermal stability than those of phosphorus (8). In addition, N-tP n bonding (9) in the N-N-P system should modify the electron density about the skeleton of the molecule, reducing repulsion energies in a way such as to improve its stability against the Can. J. Chem.…”

Section: Discussionmentioning

confidence: 99%

Arsinohydrazines: reactions of hydrazine and substituted hydrazines with organo-arsine derivatives

Peterson¹

1969

Can. J. Chem.

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Reactions between organo-arsine derivatives (CF3)2AsX and (CF3)3As and hydrazine or substituted hydrazines are discussed as synthetic routes to a new class of hydrazinoarsine compounds. The systems [(CF3)2As]x N2H4−x are unstable with respect to elimination of CF3H and N2, but stability increases with increased methylation of the nitrogen atoms. The new compounds described are: N-methyl, N′-bis(trifluoromethyl)arsinohydrazine, MeNHNHAs(CF3)2, (1) (highly unstable at room temperature); N,N-dimethyl, N′-bis(trifluoromethyl)arsinohydrazine, Me2NNHAs(CF3)2, (2) (m.p. 3.00° ± 0.15°, b.p. 20°/14.6 mm); and trimethylhydrazino-bis(trifluoromethyl)arsine, Me2NNMeAs(CF3)2, (3) (m.p. −41.5° ± 0.5°, b.p. 15°/6.30 mm). The observed order of stability was [Formula: see text]

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The New Phosphinoamines HN[P(CF₃)₂]₂, CH₃N[P(CF₃)₂]₂, and N[P(CF₃)₂]₃¹

Cited by 20 publications

References 1 publication

Platinum Aluminophosphate Oxynitride (Pt−AlPON) Catalysts. Consequences of Surface Hydrolysis and Heating Processes on the Structure

Platinum Aluminophosphate Oxynitride (Pt−AlPON) Catalysts. Consequences of Surface Hydrolysis and Heating Processes on the Structure

Direct synthesis of bulk AlPON basic catalysts in ionic liquids

Arsinohydrazines: reactions of hydrazine and substituted hydrazines with organo-arsine derivatives

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