II. Carboxylic acids -- III. Phosphorus acids -- IV. Arsonic acids -- V. Phenols -- VI. Carbonyl ligands -- VII. Alcohols -- VIII. Polyethers -- IX. Thiols -- X. Thiocarboxylic acids -- XI. Unsaturated hydrocarbons -- XII. Halides -- XIII. Hydroxamic acids -- XIV. Oximes -- XV. Amides -- XVI. Amidines -- XVII. Protonation values for other ligands -- XVIII. Ligands considered but not included -- XIX. Bibliography -- XX. Indexes -- A. Ligand formula index -- B. Ligand name index.