Essay On Coordination Compounds

Co-ordination compounds

It is a compound which has one or more co-ordination bonds. In a co-ordination bond there is a species which donates a lone pair of electrons (ligand) and a species which receiver of lone pair of electrons is a metal ion (ligand complex).

Ligands are ions or molecules surrounding the central atom and ligands make bound with central atom through coordinate covalent bond. An example is ethene in the complex known as Zeise 's salt, K+[PtCl3(C2H4)]−.

Applications Of Co-ordination Compounds The coordination compounds have great importance. These compounds are widely present in plants, environment, animals, soil, air,and in resrvior.these compounds play important role in biological system,in metallurgy, in analytic chemistry, in medicine. These compounds use for extraction, purification, qualitative and quantitative analysis etc.

Qualitative and Quantitative Chemical Analysis

Coordination compounds find use in many qualitative and quantitative chemical analyses. The familiar colour reactions given by metal ions with a number of ligands (especially chelating ligands),as a result of formation of coordination entities, form the basis for their detection and estimation by

For example excess of iron and copper (can be toxic for plants) are removed by the chelating ligands (D-penicillamine and B- desferrioxime) via the formation of coordination compounds. Iron hydroxide fe (OH)3 insoluble in water and iron deficiency occur in plants and leaves of plant turn yellow called(iron chlorosis).this problem solve by converted iron hydroxide into Fe(III)-EDTA complex which readily soluble in water and iron deficiency in plant solve by coordination complex. These ligands act as chelating agents to retain transition metal cations which have been arranged below according to the decreasing ability for