Nitrogen‐Rich Compounds of the Lanthanoids: The 5,5′‐Azobis[1H‐tetrazol‐1‐ides] of the Light Rare Earths (Ce, Pr, Nd, Sm, Eu, Gd)

Abstract

On the occasion of Carl Auer von Welsbachs 150th birthday in 2008, we investigated the 5,5'-azobis[1H-tetrazol-1-ides] (C 2 N

5,5′-Azoxytetrazolates – a new nitrogen-rich dianion and its comparison to 5,5′-azotetrazolate

“…The guanidinium derived cations in 5 and 6 reveal absorption bands of the C N stretching vibration at 1685 cm −1 (6) and 1684/1667 cm −1 (5). The ammonium salt 3 additionally can be identified by the defor mation vibration of its cation visible in a strong absorption band at 1430 cm −1 .…”

“…The ammonium salt again shows the highest sensitivity amongst the discussed compounds (40 N). The sensitivities towards electro static discharge are in a range between 0.2 J (1) and 0.50 J (5,7). Through normal activities, the human body can generate up to 25 mJ of static electricity, which can easily set off the most sensitive explosives.…”

“…4 Even several lanthanoid complexes have been published by Austrian coworkers in 2009. 5 They claimed luminescent or nonlinear optic properties of poten tial interest. Very recently we also described the silver amine azotetrazolate complex as a new primary explosive.…”

Nitrogen‐Rich Compounds of the Lanthanoids: Highlights and Summary

“…Their synthesis was performed according to the same preparative concept of the Vienna research group (see [11] and [12]). In summary, the compounds crystallized from aqueous solutions of lanthanum nitrate and Na 2 ZT (1).…”

Synthesis and Crystal Structures of New 5,5'-Azotetrazolates

“…Numerous crystal structures of 5,5'-azotetrazolate salts [3][4][5][6][7][8][11][12][13]16,20,21] have been reported, including a series of metal salts; specifically, alkali and alkaline earth metals [22,23], lanthanoids [24][25][26], Pb [27], Tl [28], Mn [29], Fe [30], Cu and Cd [31] form crystalline salts.…”