koordinaatiovesiä
Koordinaatiovesiä, known in English as coordination water or hydrate water, refers to water molecules that are directly bound to a metal ion in a coordination complex. When a metal ion forms a complex with ligands, water molecules can act as ligands themselves, forming aquo complexes. These water molecules are not just loosely trapped within the crystal lattice but are chemically bonded to the central metal atom through coordinate covalent bonds.
The number of water molecules that coordinate to a metal ion is known as the hydration number.
In solid coordination compounds, coordination water is an integral part of the crystal structure. It is often