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Title: Laser initiation of Fe(II) complexes of 4-nitro-pyrazolyl substituted tetrazine ligands

Journal Article · · Inorganic Chemistry
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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Here, the synthesis and characterization of new 1,2,4-triazolyl and 4-nitro-pyrazolyl substituted tetrazine ligands has been achieved. The strongly electron deficient 1,2,4-triazolyl substituted ligands did not coordinate Fe(II) metal centers, while the mildly electron deficient 4-nitro-pyrazolyl substituted ligands did coordinate Fe(II) metal centers in a 2:1 ratio of ligand to metal. The thermal stability and mechanical sensitivity characteristics of the complexes are similar to the conventional explosive pentaerythritol tetranitrate. The complexes had strong absorption in the visible region of the spectrum that extended into the near-infrared. In spite of having improved oxygen balances, increased mechanical sensitivity, and similar absorption of NIR light to recently reported Fe(II) tetrazine complexes, these newly synthesized explosives were more difficult to initiate with Nd:YAG pulsed laser light. More specifically, the complexes required lower densities (0.9 g/cm3) to initiate at the same threshold utilized to initiate previous materials at higher densities (1.05 g/cm3).

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1351988
Report Number(s):
LA-UR-16-29289
Journal Information:
Inorganic Chemistry, Vol. 56, Issue 4; ISSN 0020-1669
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 36 works
Citation information provided by
Web of Science

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Cited By (13)

Comparison of 1‐Ethyl‐5 H ‐tetrazole and 1‐Azidoethyl‐5 H ‐tetrazole as Ligands in Energetic Transition Metal Complexes journal April 2019
2-Methyl-substituted monotetrazoles in copper( ii ) perchlorate complexes: manipulating coordination chemistry and derived energetic properties journal January 2019
Synthesis and properties of insensitive [1,2,4]triazolo[4,3- b ]-1,2,4,5-tetrazine explosives journal January 2019
Versatile coordination behaviour of the chloro-tetrazine-picolylamine ligand: mixed-valence binuclear Cu( i )/Cu( ii ) complexes journal January 2019
Identification and formation mechanism of the transient ion fragments produced in laser-induced dissociation of 1, 1-diamino-2, 2-dinitroethylene journal September 2018
Mononuclear and One-Dimensional Cobalt(II) Complexes with the 3,6-Bis(picolylamino)-1,2,4,5-tetrazine Ligand: Mononuclear and One-Dimensional Cobalt(II) Complexes with the 3,6-Bis(picolylamino)-1,2,4,5-tetrazine Ligand journal December 2017
Incorporation of a nitrogen-rich energetic ligand in a {YbIII2} complex exhibiting slow relaxation of the magnetisation under an applied field journal January 2020
5-Amino-1 H -1,2,4-triazole-3-carbohydrazide and its applications in the synthesis of energetic salts: a new strategy for constructing the nitrogen-rich cation based on the energetic moiety combination journal January 2018
Highly functional energetic complexes: stability tuning through coordination diversity of isomeric propyl-linked ditetrazoles journal January 2018
The Chemistry and Properties of Energetic Materials Bearing [1,2,4]Triazolo[4,3- b ][1,2,4,5]tetrazine Fused Rings journal October 2018
Methylsemicarbazide as a Ligand in Late 3d Transition Metal Complexes journal January 2018
Maximization of the energy capability level in transition metal complexes through application of 1-amino- and 2-amino-5 H -tetrazole ligands journal January 2018
Energetic π-conjugated vinyl bridged triazoles: a thermally stable and insensitive heterocyclic cation journal January 2017

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