Figure 6
The relative occupancies of M atoms around the ring positions are illustrated by spheres with occupancies used as the radius. The numbering of metal positions runs clockwise with position 1 at the top. The displacement ellipsoids at the F atoms signify 90% probability density. (a) The Cr7Cu compound; (b) Cr7Zn. Colour code: white H, light blue N, lime green F, red Cu, and blue Zn atoms. |