Synthesis, structure, and characterization of high-energy 4,6-diazido-n-(4,6-diazido-1,3,5-triazin-2-yl)-1,3,5-triazin-2-amine

The high-energy compound 4,6-diazido-N-(4,6-diazido-1,3,5-triazin-2-yl)-1,3,5-triazin-2-amine was obtained in high yield by azidation of 4,6-dichloro-N-(4,6-dichloro-1,3,5-triazin-2-yl)-1,3,5-triazin-2-amine with sodium azide in acetone. According to13С and15N NMR spectral data, the obtained tetraazide did not undergo azido-tetrazole tautomerism in DMSO solutions and existed solely in the azide form. This tetraazide formed a molecular 1:1 complex with pyridine, the structure of which was confirmed by X-ray structural analysis. The obtained tetraazide had an exceptionally high melting point among azidotriazines (220–222°С), high enthalpy of formation (1641 kJ/mol) and may be of interest as starting compound for the preparation of new high-energy materials. ©2017 Springer Science+Business Media New York

Synthesis, structure, and characterization of high-energy 4,6-diazido-n-(4,6-diazido-1,3,5-triazin-2-yl)-1,3,5-triazin-2-amine

The high-energy compound 4,6-diazido-N-(4,6-diazido-1,3,5-triazin-2-yl)-1,3,5-triazin-2-amine was obtained in high yield by azidation of 4,6-dichloro-N-(4,6-dichloro-1,3,5-triazin-2-yl)-1,3,5-triazin-2-amine with sodium azide in acetone. According to13С and15N NMR spectral data, the obtained tetraazide did not undergo azido-tetrazole tautomerism in DMSO solutions and existed solely in the azide form. This tetraazide formed a molecular 1:1 complex with pyridine, the structure of which was confirmed by X-ray structural analysis. The obtained tetraazide had an exceptionally high melting point among azidotriazines (220–222°С), high enthalpy of formation (1641 kJ/mol) and may be of interest as starting compound for the preparation of new high-energy materials. ©2017 Springer Science+Business Media New York

Synthesis, structure, and the energetic properties of tetraazidopyridine-4-carbonitrile

Nucleophilic substitution of fluorine atoms in 2,3,5,6-tetrafluoropyridine-4-carbonitrile with sodium azide was used to obtain tetraazidopyridine-4-carbonitrile, the structure of which was studied by spectral methods and X-ray structural analysis. The enthalpy of formation and impact sensitivity of this compound were also assessed. ©2017 Springer Science+Business Media New York

Reaction of enamino pyrrolidide and piperidide of 2,2-dimethyl-1,2,3,4-tetrahydrobenz[f]isoquinoline series with ninhydrin

Interaction of (4Z)-2,2-dimethyl-4-(2-oxo-2-pyrrolidin-1-ylethylidene)-1,2,3,4-tetrahydrobenz[f]isoquinoline with ninhydrin leads to annulation of an indeno[1,2-b]pyrrole ring. An analogous product is formed by replacing of the pyrrolidine ring with the piperidine ring. Further heating of the obtained glycol in the presence of AcOH leads to rearrangement with the formation of benz[f]isochromeno-[4',3':4,5]pyrrolo[2,1-a]isoquinoline hexacyclic system. © 2016, Springer New York LLC. All rights reserved

Synthesis and structure of 3,4,5-triazidopyridine-2,6-dicarbonitrile possessing the record positive heat of formation

3,4,5-Triazidopyridine-2,6-dicarbonitrile, the first aromatic triazide with three adjacent azido groups in the ring, possessing the record positive heat of formation, was synthesized by azidation of 3,4,5-trichloropyridine-2,6-dicarbonitrile and characterized with X-ray analysis, thermogravimetry, differential scanning calorimetry and spectroscopic methods. © 201

Synthesis and structure of 3,4,5-triazidopyridine-2,6-dicarbonitrile possessing the record positive heat of formation

3,4,5-Triazidopyridine-2,6-dicarbonitrile, the first aromatic triazide with three adjacent azido groups in the ring, possessing the record positive heat of formation, was synthesized by azidation of 3,4,5-trichloropyridine-2,6-dicarbonitrile and characterized with X-ray analysis, thermogravimetry, differential scanning calorimetry and spectroscopic methods. © 201

Reaction of enamino pyrrolidide and piperidide of 2,2-dimethyl-1,2,3,4-tetrahydrobenz[f]isoquinoline series with ninhydrin

Interaction of (4Z)-2,2-dimethyl-4-(2-oxo-2-pyrrolidin-1-ylethylidene)-1,2,3,4-tetrahydrobenz[f]isoquinoline with ninhydrin leads to annulation of an indeno[1,2-b]pyrrole ring. An analogous product is formed by replacing of the pyrrolidine ring with the piperidine ring. Further heating of the obtained glycol in the presence of AcOH leads to rearrangement with the formation of benz[f]isochromeno-[4',3':4,5]pyrrolo[2,1-a]isoquinoline hexacyclic system. © 2016, Springer New York LLC. All rights reserved

Synthesis, structure, and the energetic properties of tetraazidopyridine-4-carbonitrile

Nucleophilic substitution of fluorine atoms in 2,3,5,6-tetrafluoropyridine-4-carbonitrile with sodium azide was used to obtain tetraazidopyridine-4-carbonitrile, the structure of which was studied by spectral methods and X-ray structural analysis. The enthalpy of formation and impact sensitivity of this compound were also assessed. ©2017 Springer Science+Business Media New York

The EPR Spectrum of Triplet Mesitylphosphinidene: Reassignment and New Assignment

Low-temperature UV-photolysis of mesitylphosphiranes under highly anaerobic conditions leads to the formation of the triplet mesitylphosphinidene (MesP). The recorded X-band EPR spectrum of triplet MesP and the derived zero-field splitting parameter D=4.116 cm−1 differ significantly from those reported previously for this intermediate. New magnetic parameters of mesitylphosphinidene are discussed along with the results of DFT calculations. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinhei

The EPR Spectrum of Triplet Mesitylphosphinidene: Reassignment and New Assignment

Low-temperature UV-photolysis of mesitylphosphiranes under highly anaerobic conditions leads to the formation of the triplet mesitylphosphinidene (MesP). The recorded X-band EPR spectrum of triplet MesP and the derived zero-field splitting parameter D=4.116 cm−1 differ significantly from those reported previously for this intermediate. New magnetic parameters of mesitylphosphinidene are discussed along with the results of DFT calculations. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinhei