Figure 3
Rows of ethyl 2-[(2-oxo-2H-chromen-6-yl)oxy]acetate molecules to both sides of, and in the same plane as, the centrosymmetric diads in Fig. 2. These molecules are related to those in the centrosymmetric dyads by a 21 operation, the position for one such axis being shown. This patterned arrangement is assisted by C8—H8⋯O1 and by C1—H1⋯O1 close contacts, in which the corresponding H8⋯O1 and H1⋯O1 distances are 2.27 and 2.61 Å. The symmetry transformation whereby one molecule is converted to the other across these hydrogen bonds is −x + , y − , −z + . Ellipsoids are shown at the 50% probability level. |