Figure 9.1.

Representative inorganic gold clusters. The organic components of the ligand layer of each cluster are not shown. Orange, yellow, purple, and green represent gold, sulfur, phosphorous, and chlorine, respectively. The images of Au₁₁, Au₂₅, and Au₁₀₂ are created from X-ray crystallographic coordinates. The image of Au₁₄₄ is from a density functional theory model (Lopez-Acevedo et al., 2009). A 5-nm diameter colloidal gold particle is shown for comparison.