Congming Ma
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View article: Experimental Study on the Evolution Law of the Mechanical and Pore Characteristic Parameters of Set Cement under High- and Ultra-High-Temperature Treatments
Experimental Study on the Evolution Law of the Mechanical and Pore Characteristic Parameters of Set Cement under High- and Ultra-High-Temperature Treatments Open
Cement has been widely used as a structural material in many underground projects, and these projects often face high- or ultra-high-temperature environments, leading to the deterioration of the mechanical, porosity, and permeability prope…
View article: Effects of ice content on compression characteristics of frozen sandstone by in-situ NMR technology
Effects of ice content on compression characteristics of frozen sandstone by in-situ NMR technology Open
In cold regions, the freezing of pore water in rock affects the mechanical behavior of the rock. This paper studied the ice content of frozen sandstone at different temperatures and its effects on the mechanical properties of sandstone. Fi…
View article: CCDC 2234897: Experimental Crystal Structure Determination
CCDC 2234897: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2234898: Experimental Crystal Structure Determination
CCDC 2234898: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Base-promoted decarboxylative gem-diazo-C-coupling: Synthesis, characterization and performance of nitrotriazolylformazans
Base-promoted decarboxylative gem-diazo-C-coupling: Synthesis, characterization and performance of nitrotriazolylformazans Open
Formazans, containing the characteristic chain of atoms –NN-CRN–NH- (R = –CN or tetrazyl) are nitrogen-rich and conjugated compounds exhibiting unique properties. In this work, new cyano and tetrazylformazans and their series of nitrog…
View article: CCDC 2225842: Experimental Crystal Structure Determination
CCDC 2225842: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2225841: Experimental Crystal Structure Determination
CCDC 2225841: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2193885: Experimental Crystal Structure Determination
CCDC 2193885: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 2193883: Experimental Crystal Structure Determination
CCDC 2193883: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Density Functional Theory Study of CL-20/Nitroimidazoles Energetic Cocrystal Compounds in an External Electric Field
Density Functional Theory Study of CL-20/Nitroimidazoles Energetic Cocrystal Compounds in an External Electric Field Open
The external electric field has a significant influence on the sensitivity of the energetic cocrystal materials. In order to find out the relationship between the external electric field and sensitivity of energetic cocrystal compounds 2,4…
View article: Facile synthesis of 4-amino-3,5-dinitropyrazolated energetic derivatives via 4-bromopyrazole and their performances
Facile synthesis of 4-amino-3,5-dinitropyrazolated energetic derivatives via 4-bromopyrazole and their performances Open
The development of practical synthetic strategies towards novel energetic materials fulfilling various civilian and military purposes is a desirable but challenging task. 4-Amino-3,5-dinitropyrazole, an insensitive energetic material, has …
View article: Theoretical studies of novel high energy density materials based on oxadiazoles
Theoretical studies of novel high energy density materials based on oxadiazoles Open
In this study, 32 energetic compounds were designed using oxadiazoles (1,2,5-oxadiazole, 1,3,4-oxadiazole) as the parent by inserting different groups as well as changing the bridge between the parent. These compounds had high-density and …
View article: Theoretical Studies on the Performance of HMX with Different Energetic Groups
Theoretical Studies on the Performance of HMX with Different Energetic Groups Open
[Image: see text] Forty nitramines by incorporating −C=O, −NH(2), −N(3), −NF(2), −NHNO(2), −NHNH(2), −NO(2), −ONO(2), −C(NO(2))(3), and −CH(NO(2))(2) groups based on a 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) framework were des…
View article: Theoretical Study on CL-20-Based Cocrystal Energetic Compounds in an External Electric Field
Theoretical Study on CL-20-Based Cocrystal Energetic Compounds in an External Electric Field Open
An external electric field has great effects on the sensitivity of cocrystal energetic materials. In order to find out the relationship between the external electric field and sensitivity of cocrystals 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12…
View article: Molecular design and properties of bridged energetic pyridines derivatives
Molecular design and properties of bridged energetic pyridines derivatives Open
A series of bridged pyridine-based energetic compounds were designed and their geometrical/electronic structures, ΔHf, detonation properties, thermal stabilities, thermodynamic properties and electrostatic potential were fully investigated…
View article: CCDC 1566496: Experimental Crystal Structure Determination
CCDC 1566496: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 939453: Experimental Crystal Structure Determination
CCDC 939453: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 945724: Experimental Crystal Structure Determination
CCDC 945724: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: CCDC 941234: Experimental Crystal Structure Determination
CCDC 941234: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Efficient synthesis of 4-amino-2,6-dichloropyridine and its derivatives
Efficient synthesis of 4-amino-2,6-dichloropyridine and its derivatives Open
A facile synthetic route to an important intermediate 4-amino-2,6-dichloropyridine was developed. Oxidation of 2,6-dichloropyridine as a starting material gave pyridine N -oxide derivative which was subjected to nitration followed by reduc…