Synthese und Kristallstruktur des Azidoberyllats (Ph4P)2[Be(μ‐OSiMe3)(N3)2]2
Abstract
Abstract Synthesis and Crystal Structure of the Azido Beryllate (Ph 4 P) 2 [Be(μ‐OSiMe 3 )(N 3 ) 2 ] 2 (Ph 4 P) 2 [Be 2 F 6 ] reacts with excess trimethylsilylazide in acetonitrile solution, accompanied by a hydrolytic side‐reaction to give the azido beryllate (Ph 4 P) 2 [Be(μ‐OSiMe 3 )(N 3 ) 2 ] 2 ( 1 ) as colourless, non‐explosive crystals. 1 was characterized by IR spectroscopy and by single crystal X‐ray determination. 1 : Space group ${\rm P}{\bar 1}$ , 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)°, R 1 = 0.0543. The complex anion of 1 forms centrosymmetric units with symmetry C i via Be 2 O 2 four‐membered rings with Be–O distances of 159.2(7) and 168.7(7) pm, and terminally bonded azide groups.
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