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Freis, Manuel; Klapötke, Thomas M.; Stierstorfer, Jörg; Szimhardt, Norbert (2017): Di(1H-tetrazol-5-yl)methane as Neutral Ligand in Energetic Transition Metal Complexes. In: Inorganic Chemistry, Vol. 56, Nr. 14: S. 7936-7947
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Abstract

The synthesis of di(1H-tetrazol-5-yl)methane (1, 5-DTM), starting from commercially available sodium azide and malononitrile, is described. This tetrazole was characterized and investigated for use as a neutral nitrogen-rich ligand in various energetic transition metal complexes: ([CuCl2(5-DTM)(2)]center dot 2H(2)O (2), [Co(H2O)(2)(5-DTM)(2)]Cl-2 (3), [Ni(H2O)(2)(5-DTM)(2)]Cl-2 (4), [Co(H2O)(2)(5-DTM)(2)](NO3)(2) (6), [Ni(H2O)(2)(5-DTM)(2)]-(NO3)(2) (7), [Zn(H2O)(2)(5-DTM)(2)](NO3)(2) (8), {Cu-3(SO4)(2)-(5-DTM-H)(2)(H2O)(4)(5-DTM)(2)]center dot H2O}(infinity) (9), [Cu(H2O)(2)(5-DTM)(2)](NO3)(2) (11), [Cu(NO3)(2)(5-DTM)(2)]center dot 2H(2)O (12), [Cu(NO3)(2)(5-DTM)(2)] (13), [Cu(H2O)(2)(5-DTM)(2)](ClO4), (14), and [Cu (ClO4)(2)(5-DTM)(2)] (15). Obtained coordination compounds were characterized using single crystal X-ray diffraction (except for 7 and 13), IR spectroscopy, elemental analysis, and differential thermal analysis. The sensitivities to external stimuli (impact, friction, electrostatic discharge) were determined. Complexes 12 and 13 were tested for their ignitability by laser irradiation.