Synthesis, Solid-State Structure, and Bonding Analysis of a Homoleptic Beryllium Azide.

[Ph P] [Be(N ) ] (1) and [PNP] [Be(N ) ] (2; PNP=Ph PNPPh ) were synthesized by reacting Be(N ) with [Ph P]N and [PNP]N . Compound 1 represents the first structurally characterized homoleptic beryllium azide. The electronic structure and bonding situation in the tetraazidoberyllate dianion [Be(N ) ] were investigated by quantum-chemical calculations (NPA, ELF, LOL).

Synthesis and structure of base-stabilized germanium(II) diazide IPrGe(N3)2.

Coordination of a strong σ-base has been shown to be an effective method for the stabilization of low valent main group element complexes. This general method was now used for the synthesis of the divalent germanium diazide. IPrGe(N3)21 represents the first neutral homoleptic germanium diazide that could be structurally characterized.

First structural characterization of neutral, base-stabilized group 15-pentaazides: single crystal X-ray structures of dmap-As(N3)5 and dmap-Sb(N3)5.

Two neutral group 15-pentaazides dmap-As(N(3))(5) (1) and dmap-Sb(N(3))(5) (2) were synthesized and structurally characterized for the first time (dmap = 4-dimethylaminopyridine). Base-stabilization was confirmed to be very suitable for the kinetic stabilization of highly explosive covalent main group polyazides.

Syntheses and X-ray crystal structures of organoantimony diazides.

Antimony(III) complexes of the general type LSbF(2) (3: L(1) =[tBuC(NiPr)(2)]; 4: L(2) =[tBuC(NDipp)(2) , Dipp=2,6-iPr(2)C(6)H(3)) and LSb(N(3))(2) (6: L(1); 7: L(2)) were prepared in high yields and characterized by elemental analyses, NMR and IR spectroscopy and single-crystal X-ray diffraction. Moreover, the solid-state structures of [L(2)SbF(2)][L(2)Li] (5), [L(2) AlH(2)] (1), and [L'H][L'K(thf)(3)] (2; L'=HC(NDipp)(2)) are described, in which the Li (5) and K atoms (2) adopt rather unusual coordination modes.

Syntheses and structures of triazides of heavy group 15 elements.

Synthesis of group 15-triazides E(N(3))(3) (E = Sb 1, Bi 2) and Py(2)-Bi(N(3))(3)3 (Py = pyridine). Single crystals of 1 were in situ grown by an IR-laser-assisted technique on the diffractometer. The structure of 3, which represents the first structurally characterized neutral Bi-triazide, is influenced by crystal packing effects according to DFT calculations.