![]() If the coordination complex carries a net charge, the complex is called a complex ion. Compounds containing complexes are coordination compounds. ![]() This type of bonding is different from a normal covalent bond in which each atom supplies one electron. A central metal atom can bond to a group of molecules or ions: metal complex. A coordinate covalent bond is a covalent bond in which one atom (i.e., the donor atom) supplies both electrons. Within a ligand, the atom that is directly bonded to the metal atom/ion is called the donor atom. ![]() Metal atoms/ions are Lewis acids: they can accept pairs of electrons from Lewis bases. Once the bond is formed, however, there is. Examples: The copper ammine ion, Cu (NH 3) 62+ is a complex ion. The central ion is the coordination center, while the molecules or ions bound to it are termed complexing agents or ligands. Ligands are also called complexing agents. Chelate effect: multidentate ligands have equal probability of forming a coordination bond as do monodentate ions. Complex Ion Definition: Complex ions are ions with a central metal ion bonded to one or more molecules or ions. Ligands are Lewis bases: they contain at least one pair of electrons to donate to a metal atom/ion. Here's some other helpful information regarding coordination compounds: Coordination compounds and complexes are distinct chemical species - their properties and behavior are different from the metal atom/ion and ligands from which they are composed. Compounds that contain a coordination complex are called coordination compounds. A coordination complex is the product of a Lewis acid-base reaction in which neutral molecules or anions (called ligands) bond to a central metal atom (or ion) by coordinate covalent bonds.
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