Figure 1
The molecular structures of (I) (left) and (II) (right). Displacement ellipsoids are drawn at the 40% probability level, with independent (symmetry-related) atoms in heavy (hollow) bonds and filled (empty) ellipsoids. Inset: the coordination assembly of the lanthanide cation, with upper and lower coordination planes represented by heavy and hollow bonds, respectively. C-bound H atoms have been omitted for clarity. [Symmetry code: (i) −x + 1, −y + 1, −z.] |