Figure 4
A superimposition of the room-temperature structure (solid lines) and the low-temperature structure (dashed lines) of (I), as seen parallel to [00]. After aligning both a vectors vertically, prior to superimposition, the room-temperature structure has been rotated by 0.076° counterclockwise to account for the difference of 0.152° between the monoclinic angle and 90°. The point of coincidence in the center is marked by a symbol. |