Synthese und Kristallstruktur des Azidoberyllats (Ph4P)2[Be(μ‐OSiMe3)(N3)2]2

Synthesis and Crystal Structure of the Azido Beryllate (Ph4P)2[Be(μ‐OSiMe3)(N3)2]2 (Ph4P)2[Be2F6] reacts with excess trimethylsilylazide in acetonitrile solution, accompanied by a hydrolytic side‐reaction to give the azido beryllate (Ph4P)2[Be(μ‐OSiMe3)(N3)2]2 (1) as colourless, non‐explosive crystals. 1 was characterized by IR spectroscopy and by single crystal X‐ray determination. 1: Space group P 1, Z = 1, lattice dimensions at 193 K: a = 1026.9(1), b = 1184.0(1), c = 1352.1(1) pm, α = 73.50(1)°, β = 74.35(1)°, γ = 64.66(1)°, R1 = 0.0543. The complex anion of 1 forms centrosymmetric units with symmetry Ci via Be2O2 four‐membered rings with Be–O distances of 159.2(7) and 168.7(7) pm, and terminally bonded azide groups.