Triazides

Aluminium triazide Barium diazide Boron triazide Cadmium diazide Calcium diazide Chromyl azide Copper(l) azide Copper(ll) azide Lead(ll) azide Lead(IV) azide Lithium azide Lithium boroazide Mercury(l) azide Mercury(ll) azide Potassium azide Silicon tetraazide Silver azide... 

Copper amine azide Copper tetramine nitrate Crotonaldehyde, stabilized Cyanogen bromide Cyanuric triazide... 

The total energy, the structure, and the ionization pattern of the more stable phenyl derivative have been calculated.52,33 The controlled explosion of triazide(phenyl)silane in a flash-pyrolysis apparatus under approximately unimolecular conditions (p = 10-3 Pa, c = 10 2 3 mil/) can be carried out without danger.52,53... 

Spontaneous explosions have been observed [1] with this dangerously explosive material, especially when pure. A sample at 0°C exploded during removal of traces of benzene under high vacuum [2], A residue containing the tetraazide, silicon chloride triazide and probably silicon dichloride diazide, exploded on standing for 2 or 3 days, possibly owing to hydrazoic acid produced by hydrolysis. 

Higher valency glycoclusters were also obtained by reaction of the hexabromo-methylated P3N3 scaffold derivative with di- or triazide building blocks containing a hydroxy anchoring function (Fig. 27). Corresponding deprotected dodeca- and... 

Synthesis of 6,l, 6 -triazido-6,l, 6 -trideoxysucrose has been achieved by the following, unambiguous, reaction sequence 2,3,4,3, 4 -penta-O-benzoyl-6,1, 6 -tri-O-p-tolylsulfonylsucrose — 6,1, 6 -triazido-2,3,4,3, 4 -penta-0-benzoyl-6,l, 6 -trideoxysucrose — 6,l, 6 -triazido-6,l, 6 -trideoxysucrose.117 The physical properties of this triazide were different from those reported by Umezawa and his colleagues.115... 

Because of the presence of two azide groups in positions adjacent to the ring nitrogen atoms in compound 13a, valence bond isomerization can result in formation of 6-azido-7-methyltetrazolo[l,5-A pyridazine 14a, 6-azido-8-methyltetrazolo[l,5-A pyridazine 15a, and the bis-tetrazole compound 16a. Calculations have been carried out by using hybrid density functional theory (B3LYP/6-311+G(d,p)) and complete basis set treatments (CBS-4M). All calculations revealed that the 8-methyl derivative 15a is the most stable isomer. Similar studies on the triazide derivative 13b, however, indicated that in this case the equilibrium is shifted to the 7-methyl form 14b. All these conclusions proved to be in entire agreement with the experimental findings (see Section 11.18.3.2.). 

Narang, K. K. et al., Synth. React, lnorg. Met.-Org. Chem., 1996, 26(4), 573 The explosive properties of a series of 5 amminecobalt(III) azides were examined in detail. Compounds were hexaamminecobalt triazide, pentaammineazidocobalt diazide, cis- and fram-tetraamminediazidocobalt azide, triamminecobalt triazide [1], A variety of hydrazine complexed azides and chloroazides of divalent metals have been prepared. Those of iron, manganese and copper could not be isolated cobalt, nickel, cadmium and zinc gave products stable at room temperature but more or less explosive on heating [2],... 

Boron azide diiodide, 0148 Boron triazide, 0153 Diazidodichlorosilane, 4092 Diazidodimethylsilane, 0918... 

Phosphorus azide difluoride-borane, 4316 Phosphorus triazide, 4789... 

Elimination of HI, which in the presence of an excess of IN3 can form hydrazoic acid, followed by its addition to the vinyl azides can give an intermediate triazide 75. The same compound could arise directly by substitution of one iodine atom by an azido group. The intermediate 75 has been considered to undergo a transannular reaction with homolytic cleavage of the weak C—I bond to form the radical 76, which loses a nitrogen atom to a radical 77. Combination of the two radicals leads to the 2-tetrazene 74 (equation 77). 

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