Fig. 5: Molecular structure of the anion component of 6 at 150 K and displacement ellipsoids set to 40%.

Nonamide hydrogen atoms and the [K(B15C5)₂]⁺ cation component are omitted for clarity. Selected bond lengths (Å): U1-N1, 2.393(2); U1-N2, 2.404(2); U1-N3, 2.385(2); U1-N4, 2.721(2); U1-N5, 2.335(3).