S 11.1 Basic concepts of coordination compounds 11.1.1 Coordination compounds Defination: A complex is a typical acid-base adduct of a Lewis acid and a lewis base.E.g,[AgNH3)2]+是Lewisi酸Ag+和NH3 的加合物。 A coordination compound or metal complex,has a structure consisting of a central atom or ion (usually metallic),bonded to a surrounding array of molecules or anions (ligands,complexing agents).11.1.1 Coordination compounds Defination: A complex is a typical acid-base adduct of a Lewis acid and a lewis base. E.g., [Ag(NH3)2]+是Lewis酸Ag+和NH3 的加合物。 §11.1 Basic concepts of coordination compounds A coordination compound or metal complex, has a structure consisting of a central atom or ion (usually metallic), bonded to a surrounding array of molecules or anions (ligands, complexing agents)