komplexisid
Komplexisid are a concept in chemistry referring to coordination complexes, structures in which a central metal atom or ion is surrounded by ligands that donate electron pairs to form coordinate covalent bonds. The ligands create a coordination sphere around the metal center, and the properties of the complex depend on both the metal and the ligands. In these complexes the metal is typically a transition metal; common oxidation states vary, and the ligands may be neutral molecules (like ammonia) or anions (like chloride). The arrangement results in a defined coordination number, such as 4 or 6, reflecting the number of donor atoms bound to the metal.
Classification and structure: Mononuclear complexes have a single metal center, while polynuclear complexes have two or
Formation and examples: Formation typically involves combining a metal salt with suitable ligands under controlled conditions;
Applications: The field spans catalysis, materials science, and bioinorganic chemistry, including homogeneous catalysis, dye chemistry, and
See also: coordination chemistry, ligands, chelation, organometallics.