coordination chemistry

Coordination Compounds   Coordination compounds refer to chemical compounds that have a central metal atom in non-metal atoms or groups of atoms. These non-metal atoms, ions, or molecules that surround the central metal atom are called ligands and they donate electrons to the metal. The bonding between the ligands and the central metal atom occurs through coordinate or covalent bonds. Coordination compounds can be either neutral or charged. When charged, the complex is stabilized by nearby counter-ions. Coordination compounds form as a result of a Lewis acid-base reaction. Examples of ligands include: Negative ligands : Cyanide ion, Halide ion, peroxide ion, sulfide ion Positive ligands : Hydrazinium ion, Nitrosonium ion, Nitronium ion Neutral ligands : Methylamine, Ammonia, Water Coordination compounds include most metal complexes or compounds, except for alloys. DOUBLE SALTS AND COORDINATION  COMPOUNDS Compounds form when elements combine in stoichiometric amounts, resul...