Editing Coordination complex (section)

{{Short description|Molecule or ion containing ligands datively bonded to a central metallic atom}}
[[File:Cisplatin-3D-balls.png|thumb|upright=1.2|[[Cisplatin]], PtCl<sub>2</sub>(NH<sub>3</sub>)<sub>2</sub>, is a coordination complex of platinum(II) with two chloride and two ammonia [[ligand]]s. It is one of the most successful anticancer drugs. (Cl=green, Pt=dark blue, N=blue, H=white)]]

A '''coordination complex''' is a chemical compound consisting of a central [[atom]] or [[ion]], which is usually [[metal]]lic and is called the ''coordination centre'', and a surrounding array of [[chemical bond|bound]] [[molecules]] or ions, that are in turn known as ''[[ligand]]s'' or complexing agents.<ref>{{cite book |title= Introduction to Coordination Chemistry |first= Geoffrey A. |last= Lawrance |year= 2010 |publisher= Wiley |isbn= 9780470687123 |doi= 10.1002/9780470687123}}</ref><ref>{{GoldBookRef | title = complex | file = C01203}}</ref><ref>{{GoldBookRef | file = C01330 | title = coordination entity}}</ref>  Many metal-containing [[chemical compound|compounds]], especially those that include [[transition metal]]s (elements like [[titanium]] that belong to the periodic table's [[d-block]]), are coordination complexes.<ref>{{Greenwood&Earnshaw2nd}}</ref>