Synthesis and Characterization of Various Photosensitive Copper(II) Complexes with 5‐(1‐Methylhydrazinyl)‐1H‐tetrazole as Ligand and Perchlorate, Nitrate, Dinitramide, and Chloride as Anions

Abstract

The preparation of 5-(1-methylhydrazinyl)-1H-tetrazole monohydrate (1⋅H2O) and various copper(II) complexes with perchlorate (2 and 3), nitrate (4, 5, and 6), dinitramide (7), and chloride (8) is described. The coordination compounds (monomers, dimers, and polymers) were characterized through infrared spectroscopy and elemental analysis. Further, the structures of 2 and 4-8 were determined by single-crystal X-ray diffraction. Compound 1 can act as a bidentate ligand in its neutral form (HMHT) and as a μ2- or μ3-bridging ligand in its deprotonated form (MHT). The energetic properties of the synthesized complexes, such as their sensitivities toward impact and friction, were determined, and laser ignition tests were performed. New information about the laser initiation process and the role of the anion in the initiation criterion was obtained. The perchlorate complexes 2 (T(decomp)=217 °C) and 3 (T(decomp)=206 °C) are potential primary explosives.

Methylsemicarbazide as a Ligand in Late 3d Transition Metal Complexes

“…Various combinations have been described in the literature . Highly energetic and sensitive complexes are formed by the combination of hydrazine derivatives (hydrazine, monomethylhydrazine, dimethylhydrazine, semicarbazide (SC), carbohydrazide (CHZ) but also N ‐amino‐azoles) as the ligand with nitrate or perchlorate transition metal salts . One of the most prominent ECC of this type is NHN (nickel hydrazine nitrate) which has also successfully been tested in detonators but contains very toxic nickel(II) …”

Crystal structure of bis{1-[(benzotriazol-1-yl)methyl]-1-H-1,3-(2-methylimdazol)} dibromidomercury(II), [Hg(C11H11N5)2Br2], C22H22Br2HgN10

“…Multidentate N-hetero-cyclic ligands containing rich coordination sites, such as imidazole, triazole, tetrazole and their derivative areo ften employed to producep olymeric networks with structural diversityo wing to theirv arious coordination modes. Plenty of appealing coordination frameworks based on these ligands has been reported [3][4][5][6]. For some timenow we have involved in the synthesis of as eries of multidentate Nheterocyclic compounds and studied their coordination behaviors [7][8][9][10][11].…”

Syntheses, crystal structures and density functional theory investigations of copper(ii) complexes bearing tridentate Schiff base ligands derived from 8-aminoquinoline

“…1). Within the asymmetric unit, the copper(II) center is six-coordinated, being bonded to nitrogen atoms, N (19), N(28) and a phenoxo oxygen atom, O (11) 41 The shortest copper⋅⋅⋅copper distance in the polymer is 7.159(2) Å. …”