Figure 2
A perspective view (from 150 Å, inverse stereo stick-structure) along the c-axis direction, with the bis(benzimidazolyl)pyridine-Ir planes oriented horizontally and rendered in purple, versus the other atoms (pale green). The slipped stacks form a `staircase'; in the N-methyl analogue (Yutaka et al., 2005), the corresponding array appears as an alternating `stepping stone' pattern. |