Figure 1
A view of the title compound showing the atomic numbering. Displacement ellipsoids are drawn at the 50% probability level for non-H atoms. The suffixes a, b, c and d denote atoms at equivalent positions (1 − y, 1 + x − y, z), (−x + y, 1 − x, z), (2 − y, 1 + x − y, z) and (1 − x + y, 2 − x, z), respectively. |