What is Coordination complex?
[[File:Cisplatin-3D-balls.png|thumb|200px|<center>[[Cisplatin]], PtCl<sub>2</sub>(NH<sub>3</sub>)<sub>2</sub><br />A [[platinum]] atom with four ligands</center>]] [[File:Grubbs-1G-3D-balls.png|thumb|[[Grubbs' catalyst]], another example of a chemical complex.]] A '''coordination complex''' is an [[Inorganic chemistry|inorganic]] chemical compound where a central [[atom]] (usually a [[metal]]) has an [[electron shell]] which permits it to combine with one or more [[molecule]]s. These molecules, called ''[[ligand]]s'', have at least one pair of free [[electron]]s for binding. {{chem-stub}} [[Category:Chemical compounds]] [[Category:Transition metals]]