From the Contents: Discovery of Intramolecular-Coordination Bonds in Cyclometalation Reactions with Main Group Metal Compounds -- Verification of the Formation of Intramolecular-Coordination Bonds in Cyclometalation Reactions with Transition Metal Compounds -- Organometallic Intramolecular-Coordination Compounds -- Characteristics of Cyclometalation Reactions for Organometallic Intramolecular-Coordination Five-Membered Ring Compounds -- Reasons That Organometallic Intramolecular-Coordination Five-Membered Ring Compounds Are Very Easily Synthesized Through Cyclometalation Reactions -- Applications.