Chelates with π-stacking and hydrogen-bonding interactions as safer and structurally reinforced energetic materials

Chelate Coordination Compounds as a New Class of High-Energy Materials: The Case of Nitro-Bis(Acetylacetonato) Complexes

“…The design and preparation of new High-Energy Materials (HEM) with improved stability and satisfactory performance attracted extensive attention of scientists working in the field of energy compounds over the last few decades [ 1 , 2 , 3 , 4 ]. Many classical explosives fall into the categories of nitroaromatic or nitroaliphatic compounds, however, these energetic molecules usually have very high sensitivities towards detonation.…”

“…Chelate complexes of Co, Zn, and Ni with π-stacking interactions and hydrogen bonds in their crystal structures were recently proposed as possible safer energetic materials [ 4 ]. Sensitivity tests and thermal studies were performed for three high energy coordination compounds: [Co(SCZ) 2 (H 2 O) 2 ]·(TNR)(H 2 O) 2 , [Zn(SCZ) 2 (H 2 O) 2 ]·(TNR)(H 2 O) 2 , and [Ni(SCZ) 2 (H2O) 2 ].…”

“…Sensitivity tests and thermal studies were performed for three high energy coordination compounds: [Co(SCZ) 2 (H 2 O) 2 ]·(TNR)(H 2 O) 2 , [Zn(SCZ) 2 (H 2 O) 2 ]·(TNR)(H 2 O) 2 , and [Ni(SCZ) 2 (H2O) 2 ]. (TNR)(H 2 O) 2 (where SCZ = semicarbazide and H 2 TNR = styphnic acid) and the results demonstrated that these energetic molecules are relatively insensitive towards mechanical stimuli [ 4 ]. It is especially important to point out the role of π-stacking interactions and hydrogen bonds for the control of the sensitivities of HEM compounds.…”

“…Many classical explosives fall into the categories of nitroaromatic or nitroaliphatic compounds, however, these energetic molecules usually have very high sensitivities towards detonation. Although nitroaromatic and nitroaliphatic compounds are the focus of the vast majority of studies in this area, coordination compounds are also seen as possible energy molecules with promising detonation characteristics [4][5][6][7][8][9][10][11].…”

“…Chelate complexes of Co, Zn, and Ni with π-stacking interactions and hydrogen bonds in their crystal structures were recently proposed as possible safer energetic materials [4] (where SCZ = semicarbazide and H 2 TNR = styphnic acid) and the results demonstrated that these energetic molecules are relatively insensitive towards mechanical stimuli [4]. It is especially important to point out the role of π-stacking interactions and hydrogen bonds for the control of the sensitivities of HEM compounds.…”