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Updated: May 19, 2026

Preparation and Reactivity of a Triphosphenium Bromide Salt: A Convenient and Stable Source of Phosphorus(I)
Published on: November 22, 2016
Potassium [(1S)-1-azido-2-phenyl-eth-yl]trifluorido-borate
Abstract:
The title compound, K(+)·C(8)H(8)BF(3)N(3) (-), is a salt containing the chiral organic trifluorido-borate anion. The organic anions and potassium cations are tightly bound to each other by the coordination K-F [2.654 (3)-3.102 (3) Å] and K-N [2.951 (4)-3.338 (4) Å] inter-actions. Thus, the potassium cation adopts a nine-vertex coordination polyhedron, which can be described as a distorted monocapped tetra-gonal anti-prism. In the crystal, the organic anions and potassium cations form layers parallel to (001). Weak C-H⋯π inter-actions between neighbouring phenyl rings further stabilize the crystal.
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