The branch of chemistry that deals with the study of chemical compounds containing bonds between carbon and a metal which is called as organometallic chemistry. Combines aspects of inorganic chemistry with organic chemistry, therefore such compounds are also known as organo-inorganic compounds. Including all the traditional metals, lanthanides, actinides and semi-metals are considered to form organometallic compounds. There are also many complexes that have the coordination bonds between a metal and an organic ligands, such as organic ligands bind a metal provided by a heteroatom such as nitrogen or oxygen, and such compounds is then considered as coordination compounds. But, if any of the ligands which form a direct metal-carbon, then generally be regarded as organometallic compound. In case of metal alkoxides lipophilic and is termed as metalorganics.
There are many organic coordination compounds occurring in nature such as hemoglobin, which simply contain an iron core is coordinated to nitrogen atoms. When speaking of chlorophyll, magnesium acts as a center of a ring of chlorine. The study of these inorganic compounds is termed as bioinorganic chemistry. The state of such compounds may vary with the nature of the anionic moiety, and can not normally be considered as organometallic.
Depending on the nature of the organic compound, the nature of the link may also vary from ionic or covalent. Thus, the organic compounds that are linked to sodium are ionic, while attached to the lead or tin are generally covalently binds while lithium may have links with intermediate properties.
Such compounds also find practical uses as stoichiometric and catalytic active compounds such as ferrocene using instead of tetraethyl lead as an agent against stroke. Organometallic compounds of metals are extremely basic and reagents are used as reducing agents. Act like superbases in organic synthesis, but its flammability severely reduces its industrial uses. Monsanto process using rhodium carbonyl complex to manufacture acetic acid industrially. Wacker process also is used in the oxidation of olefins. Another titanium based organometallic compound called Ziegler-Natta catalysts used in the production of polyethylene and other polymers.
The key to understanding the Chemical bonding in such compounds isobal principle is used. NMR and IR spectroscopy techniques are commonly used to determine the structure and bonding. Organometallic play an important role in other branches of chemistry and biological and analytical. Therefore, chemicals sometimes refer to a particular molecule as organometallic making it more convenient to understand that molecules having chemical reaction that is derived from an organometallic molecule.