2-Methyl-substituted monotetrazoles in copper(ii) perchlorate complexes: manipulating coordination chemistry and derived energetic properties

Zeisel, Lukas; Szimhardt, Norbert; Wurzenberger, Maximilian H. H.; Klapoetke, Thomas M. und Stierstorfer, Jörg (2019): 2-Methyl-substituted monotetrazoles in copper(ii) perchlorate complexes: manipulating coordination chemistry and derived energetic properties. In: New Journal of Chemistry, Vol. 43, No. 2: pp. 609-616

Abstract

A proposed correlation between coordination chemistry and deduced energetic properties (thermal behaviour, and sensitivities towards mechanical and optical stimuli) of copper(ii) complexes is investigated. Starting from a system comprising Cu(ClO4)(2) and either of the ligands 2-methyl-5-aminotetrazole (1, 2-MAT) or 2-methyl-5H-tetrazole (2, 2-MTZ), typically altered parameters like the metal(ii) centre, ligand, or counterion were predefined. Instead, solely slight changes in ligand concentration and the solvent system were implemented in order to provide an insight into structure-property relationships of energetic coordination compounds (ECC) of this type. As a result, five highly energetic complexes [Cu(H2O)(2)(2-MAT)(4)](ClO4)(2)H2O (3), [Cu(H2O)(2)(2-MAT)(4)](ClO4)(2) (4), [Cu(H2O)(2)(2-MAT)(4)](ClO4)(2)2 2-MAT (5), [Cu(ClO4)(2)(H2O)(2)(2-MAT)(2)] (6), and [Cu(H2O)(2)(2-MTZ)(4)](ClO4)(2) (7) were synthesized and, except for 5, elaborately characterized. Besides structural elucidation via X-ray diffraction, NIR-spectroscopy, differential thermal analysis (DTA), standard sensitivity measurements (impact, friction, and electrostatic discharge), UV/vis-spectroscopy, and optical initiation experiments were conducted to deduce a precise relationship between coordination chemistry and the consequential energetic characteristics of these complexes.

• Item Type: Journal article
• Faculties: Chemistry and Pharmacy > Department of Chemistry
• Subjects: 500 Science > 540 Chemistry
• ISSN: 1144-0546
• Language: English