Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 19, Issue 30, Pages 9995-10003Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201300688
Keywords
coordination polymers; copper; energetic materials; laser initiation; ligand effects; primary explosives
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Funding
- Ludwig-Maximilian University of Munich (LMU)
- U.S. Army Research Laboratory (ARL) [W911NF-09-2-0018]
- Armament Research, Development and Engineering Center (ARDEC) [W911NF-12-1-0467]
- Office of Naval Research (ONR) [ONR.N00014-10-1-0535, ONR.N00014-12-1-0538]
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The preparation of 5-(1-methylhydrazinyl)-1H-tetrazole monohydrate (1H(2)O) 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 (2)- or (3)-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 degrees C) and 3 (T-decomp=206 degrees C) are potential primary explosives.
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