Figure 1
The molecular structure of (I), with the atom-numbering scheme. Displacement ellipsoids are shown at the 40% probability level and H atoms are drawn as small spheres of arbitrary radii. The labelled and unlabelled cations shown are derived from the coordinates in the CIF by the symmetry operations (1 + x, y, z) and (3 − x, 1 − y, 2 − z), respectively. Atom U1 lies on an inversion centre at (1, ½, 1) and the unlabelled atoms in the anion are derived by use of the symmetry operation (2 − x, 1 − y, 2 − z). |