首页|Comparison of 1-vinyl 5H-tetrazole and 1-allyl-5H-tetrazole as ligands in energetic transition metal complexes
Comparison of 1-vinyl 5H-tetrazole and 1-allyl-5H-tetrazole as ligands in energetic transition metal complexes
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Energetic Coordination Compounds (ECC) show promising properties to be used as potential substitutes for highly toxic lead-containing primary explosives。 The concept is to combine the three building blocks: (ⅰ) ligand， (ⅱ) transition metal and (ⅲ) anion， acting as (ⅰ)fuel， (ⅱ) matrix， and (ⅲ) oxidizer or energetic component。 By variation of the ligands the complexes' properties can be adjusted toward their desired performance and sensitivities。 In the present study， l-vinyl-5H-tetrazole (1-VTZ) and l-allyl-5H-tetrazole (1-AllylTZ) were used as nitrogen-rich endothermic ligands to form 3d metal (Mn~(2+)， Fe~(2+)， Cu~(2+)， Zn~(2+)) perchlorate based ECC。 Starting from 2-chloroethylamine hydrochloride， 1-VTZ was prepared by conducting a tetrazole ring closure followed by elimination of hydrogen chloride from 1-(2-chloroethyl)-5H-tetrazole in methanolic KOH solution。 1-AllylTZ was obtained by a heterocyclization reaction of allylamine with triethyl orthoformate and sodium azide in acetic acid medium。 All compounds were intensively characterized by XRD， IR， EA， DTA， TGA and sensitivity measurements (IS， FS， ESD)。 The energetic performances were evaluated by hot needle and hot plate。
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