Hydrogendiazid Synthese und Kristallstruktur von PPh4[N3HN3]

Abstract

Hydrogen Diazide – Synthesis and Crystal Structure of PPh4[N3HN3] PPh4[N3HN3] has been prepared from PPh4N3 and Me3SiN3 by the reaction with water or ethanol forming colourless nonexplosive crystal needles, which were characterized by IR spectroscopy and by a crystal structure determination. Space group C2/c, Z = 12, lattice dimensions at –70 °C: a = 3782.4(3), b = 727.8(2), c = 2512.4(2) pm, β = 110.13(1)°, R = 0.0841. The [N3HN3]– ion is characterized by an asymmetric N–H…N hydrogen bridge with a NN distance of 272(1) pm.

New Hydrazinium Azide Compounds

“…In a similar system with less basic cations hydrogendiazide, where two azide anions are bridged by a proton, was isolated [11]. In a similar system with less basic cations hydrogendiazide, where two azide anions are bridged by a proton, was isolated [11].…”

Homoleptic Azidometalates

“…The azido groups are arranged with an dihedral angle of 668. [8] The ions [Ag(N 3 ) 2 ] À and [I(N 3 ) 2 ] À have the expected C 2 symmetry. [9] In anions with more than two azido groups the central atom has a square planar ([Pt(N 3 ) 4 ]…”

“…The azido groups are arranged with an dihedral angle of 668. [8] The ions [Ag(N 3 ) 2 ] À and [I(N 3 ) 2 ] À have the expected C 2 symmetry. [9] In anions with more than two azido groups the central atom has a square planar ([Pt(N 3 ) 4 ] 2À , [4] [Cu(N 3 ) 4 ] 2À , [10] [Pd(N 3 ) 4 ] 2À , [11] [Au(N 3 ) 4 ] 2À [12] ), tetrahedral ([Zn(N 3 ) 4 ] 2À , [13] [Mn(N 3 ) 4 ] 2À [14] ), trigonal bipyramidal ([Fe(N 3 ) 5 ] 2À ), [15] or octahedral ([Sn(N 3 ) 6 ] 2À , [16] [Pb(N 3 ) 6 ] 2À , [17] [Pt(N 3 ) 6 ] 2À , [4] [As(N 3 ) 6 ] 2À , [3] [Ge(N 3 ) 6 ] 2À [5] ) coordination geometry with covalently bonded azido ligands which have a bent arrangement around the central atom ( Figure 1).…”

Methylated Derivatives of Hydrazinium Azide

“…Hydrogen diazide shows a similar structure with two azide ions being bridged by a proton via hydrogen bonds. [11] This is not possible here because tetramethylhydrazine is more basic than an azide ion. In solution no third signal in the 14 N NMR around δ ϭ Ϫ320 for HN 3 was detected for 6.…”