Figure 2From: Syntheses and characterization of two novel tetranuclear lead(II) clusters self-assembled by hydrogen bonded interactionsMolecular structures of (1) and (2) displaying the crystallographic numbering scheme. (a, b) Displacement ellipsoids are drawn at the 50% probability level. The hydrogen atoms of (1) are omitted for clarity and hydrogens of (2) are included as spheres of arbitrary radii.Back to article page