Trimerization of 4-Amino-3,5-dinitropyrazole: Formation, Preparation, and Characterization of 4-Diazo-3,5-bis(4-amino-3,5-dinitropyrazol-1-yl) pyrazole (LLM-226) | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

5250756

Reference Type

Journal Article

Title

Trimerization of 4-Amino-3,5-dinitropyrazole: Formation, Preparation, and Characterization of 4-Diazo-3,5-bis(4-amino-3,5-dinitropyrazol-1-yl) pyrazole (LLM-226)

Author(s)

Zhang, MX; Pagoria, PF; Imler, GH; Parrish, D

Year

2019

Is Peer Reviewed?

Yes

Journal

Journal of Heterocyclic Chemistry
ISSN: 0022-152X

Publisher

WILEY

Location

HOBOKEN

Volume

Issue

Page Numbers

781-787

Language

English

DOI

10.1002/jhet.3434

Web of Science Id

WOS:000461906200004

URL

http:///www.wiley.com/WileyCDA/
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Abstract

4-Amino-3,5-dinitropyrazole (LLM-116, 1) undergoes trimerization to 4-diazo-3,5-bis(4-amino-3,5-dinitropyrazol-1-yl) pyrazole (LLM-226) upon heating. A mechanism is proposed and discussed. LLM-226 is a new diazo-based energetic material, thermally stable, and insensitive to impact, friction, and spark. The material may be prepared by heating 1 and 4-diazo-3,5-dinitropyrazole (2) in a mixture of toluene and butyl acetate at 110 degrees C or heating 1 alone in dichlorobenzene at 160 degrees C. The characterization of LLM-226 including X-ray crystallographic analysis and small-scale safety properties will be discussed.

Keywords

Polymer Science; ionic derivatives, density, decomposition