Related Experiment Video
Updated: Dec 30, 2025

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
Incorporating Energetic Moieties into Four Oxadiazole Ring Systems for the Generation of High-Performance Energetic
Bohan Wang1, Hualin Xiong1, Guangbin Cheng1
1School of Chemical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing, Jiangsu, P. R. China.
Abstract:
The synthesis of three neutral 3,3'-di(1,2,5-oxadiazol-3-yl)-5,5'-bi(1,2,4-oxadiazole) structures in combination with different energetic moieties such as nitramino, trinitroethylamino, and N-nitrated trinitroethylamino is presented. In addition, a novel family of energetic salts based on 4,4'-([5,5'-bi(1,2,4-oxadiazole)]-3,3'-diyl)-bis(1,2,5-oxadiazol-3-nitramide) is synthesized. The new compounds (4, 6-18) are characterized by IR and multinuclear NMR spectroscopy and elemental analysis. The structures of 4⋅2 C4 H8 O2 , 9, 13, 15, and 16 are further confirmed by single-crystal X-ray diffraction studies. The thermal stabilities of 4 and 6-18 are determined by differential scanning calorimetry. Most of the new compounds have high densities (1.72-1.93 g cm-3 ) measured using a gas pycnometer (25 °C). Energetic evaluation indicates that they also have good detonation pressures and velocities (P: 26.4-41.9 GPa; D: 8218-9550 m s-1 ).
More Related Videos
04:51Author Spotlight: Functionalizing Metal-Organic Frameworks: Advancements, Challenges, and the Power of Post-Synthetic Ligand Exchange
Published on: June 23, 2023
05:47Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Published on: August 7, 2018
Related Concept Videos
ortho–para-Directing Activators: –CH3, –OH, –⁠NH2, –OCH3
Structure and Nomenclature of Epoxides
Oxidation of Alkenes: Syn Dihydroxylation with Osmium Tetraoxide
Cycloaddition Reactions: MO Requirements for Photochemical Activation
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
Thermal Electrocyclic Reactions: Stereochemistry
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.