Figure 2
Part of the crystal structure of (I), showing the different configurations of the two isomers of the cation lying across a common centre of inversion. The bonds in the major isomer are shown as full lines and those in the minor isomer as dashed lines. For the sake of clarity, H atoms bonded to C atoms have been omitted. Displacement ellipsoids are drawn at the 10% probability level [symmetry code: (i) 1 − x, 1 − y, 1 − z]. |