Liquid Crystalline Behaviours of the Complexes Based on 1,3,4‐Oxadiazole Derivative and Benzoic Acid

Zhao, Chengxiao; Wang, Haitao; Ran, Xia; Bai, Binglian; Zhang, Yan; Li, Min

doi:10.1002/cjoc.201100276

Cited by 4 publications

(1 citation statement)

References 40 publications

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“…Oxadiazoles can be used in dyes, [12,13] liquid crystals, [14] and drugs, [15] however, they are now becoming more and more interesting in the design of new high energetic materials (HEDM). 3,5-Disubstitized 1,2,4-oxadiazoles can combine good performances with adequate stabilities.…”

Section: Introductionmentioning

confidence: 99%

Maximum Compaction of Ionic Organic Explosives: Bis(hydroxylammonium) 5,5′‐Dinitromethyl‐3,3′‐bis(1,2,4‐oxadiazolate) and its Derivatives

Klapötke

Mayr

Stierstorfer

et al. 2013

Chemistry A European J

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Within this contribution on bis(oxadiazoles) we report on bis-hydroxylammonium 5,5'-dinitro-methyl-3,3'-bis(1,2,4-oxadiazolate), which (to the best of our knowledge) shows the highest density (2.00 g cm(-3) at 92 K, 1.95 g cm(-3) at RT) ever reported for an ionic CHNO explosive. Also the corresponding bis(ammonium) salt shows an outstanding density of 1.95 g cm(-3) (173 K). The reaction of the 3,3'-bis(1,2,4-oxadiazolyl)-5,5'-bis(2,2'-dinitro)-diacetic acid diethyl ester with different nitrogen-rich bases, such as ammonia, hydrazine, hydroxylamine, and triaminoguanidine causes decarboxylation followed by the formation of the corresponding salts (cation/anion stoichiometry 2:1). The reactions are performed at ambient temperature in H2O/MeOH mixtures and furnish qualitatively pure products showing characteristics of typical secondary explosives. The obtained compounds were characterized by multinuclear NMR spectroscopy, IR and Raman spectroscopy, as well as mass spectrometry. Single-crystal X-ray diffraction studies were performed and the structures of all compounds were determined at low temperatures. The thermal stability was measured by differential scanning calorimetry (DSC). The sensitivities were explored by using the BAM drophammer and friction test. The heats of formation were calculated by the atomization method based on CBS-4M enthalpies. With these values and the X-ray densities, several detonation parameters such as the detonation pressure, velocity, energy, and temperature were computed using the EXPLO5 code.

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Section: Introductionmentioning

confidence: 99%

Maximum Compaction of Ionic Organic Explosives: Bis(hydroxylammonium) 5,5′‐Dinitromethyl‐3,3′‐bis(1,2,4‐oxadiazolate) and its Derivatives

Klapötke

Mayr

Stierstorfer

et al. 2013

Chemistry A European J

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Investigation of luminescent and liquid crystalline properties of the supramolecular hydrogen bonded complexes formed from non-mesogenic pyridine derivatives and lauric acid

Devadiga

Ahipa

et al. 2023

Journal of Molecular Liquids

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Multistimuli-responsive organogels based on hydrazide and azobenzene derivatives

Bai

Wang

et al. 2017

RSC Adv.

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The behaviors of organogels of gelators containing hydrazide and azobenzene units connected via, 10) have been studied. The length and parity of the central flexible spacer play crucial roles in the gelation. E6 and E10 could form a stable organogel in DMF, and the critical gelation concentration of E10 is higher than that of E6, but no gelation is observed for compound E5. Xerogels of E6 and E10 from DMF exhibited fibrous aggregates. The organogels showed a photoinduced gel-to-precipitate transition under the irradiation by UV light irradiation, which was attributed to the photoisomerization of azobenzene. The trans-cis isomerization in gels further caused the morphological change from fibrous to globular aggregates. In addition, the organogel exhibited multiple stimuli-responsive behaviors upon exposure to stimuli such as temperature, anions and pH.

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Liquid Crystalline Behaviours of the Complexes Based on 1,3,4‐Oxadiazole Derivative and Benzoic Acid

Cited by 4 publications

References 40 publications

Maximum Compaction of Ionic Organic Explosives: Bis(hydroxylammonium) 5,5′‐Dinitromethyl‐3,3′‐bis(1,2,4‐oxadiazolate) and its Derivatives

Maximum Compaction of Ionic Organic Explosives: Bis(hydroxylammonium) 5,5′‐Dinitromethyl‐3,3′‐bis(1,2,4‐oxadiazolate) and its Derivatives

Investigation of luminescent and liquid crystalline properties of the supramolecular hydrogen bonded complexes formed from non-mesogenic pyridine derivatives and lauric acid

Multistimuli-responsive organogels based on hydrazide and azobenzene derivatives

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