Metal complexes are molecules where a central metal ion is surrounded by other molecules or ions, known as ligands, that are bonded to the metal through coordinate covalent bonds. These complexes often exhibit unique properties and reactivity due to the interactions between the metal ion and the ligands. Research in metal complexes includes studying their structure, bonding, electronic properties, and reactivity. This area of research is important in a wide range of fields, including chemistry, materials science, catalysis, and bioinorganic chemistry. Metal complexes have applications in various industrial processes, such as in catalysis for the production of pharmaceuticals and polymers, as well as in biological systems, such as in metalloproteins and metal-based drugs. Overall, research in metal complexes plays a crucial role in advancing our understanding of the fundamental properties of metals and their interactions with other molecules, as well as in developing new materials and technologies with unique and desirable properties.