Abstract
Following the useful concept of energetic coordination compounds (ECC), copper(II) dicyanamide was used as a building block for the synthesis of eight new complexes. As ligands, six different N-substituted tetrazoles were applied, leading to the formation of high-nitrogen containing complexes. The obtained compounds were characterized in detail by single crystal as well as powder XRD, IR, EA, DTA, and TGA. In addition, the sensitivities towards impact and friction were determined with BAM standard techniques as well as the sensitivity towards electrostatic discharges. All compounds show moderate sensitivities (IS>6, FS>80 N) and energetic properties but differ in their polymeric structures forming polymeric chains or layers up to 3D networks.
Highlights
Anion is its application in transition metal complexes
Besides the commonly used central metals copper and cobalt there can be found more exotic ones, like silver or uranium.[6]. Strong oxidizing anions such as nitrate or perchlorate were often used for the synthesis of energetic coordination compounds (ECC)
For the synthesis of novel ECC, we focused on small anions with positive heat of formation (~Hf)
Summary
Following the useful concept of energetic coordination compounds (ECC), copper(II) dicyanamide was used as a building block for the synthesis of eight new complexes. All compounds show moderate sensitivities (IS > 6, FS > 80 N) and energetic properties but differ in their polymeric structures forming polymeric chains or layers up to 3D networks. The neutral compound and its metal salts were discussed for different applications, especially for the use as energetic materials, e. G. as burn rate modifiers due to their moderate sensitivities.[4] Another important use of the DCA anion is its application in transition metal complexes. The optimal compromise for the synthesis of energetic copper complexes with moderate sensitivities is the dicyanamide anion.
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