The following table gives some of the important bio coordination compounds. Chemistry Notes for class 12 Chapter 9 Coordination Compounds Coordination compounds are those addition molecular compounds which retain their identity in solid state as well as in dissolved state. Coordination complexes can undergo a variety of reactions, including electron transfer, ligand exchange, and associative processes. In the human biological system, several coordination compounds play important roles. The Coordination compounds are also used as catalysts for several biological and industrial processes having much importance in the qualitative and quantitative chemical analysis within the field of analytical chemistry. Haemoglobin, the red pigment 1 of blood which acts as oxygen carrier is a coordination compound … (ii) Role of coordination compounds in medicinal chemistry: Coordination compounds play an important role in many biological processes in plants and animals. According to management experts, coordination is necessary because: "Coordination is the Essence of Management."I.e. Chlorophyll , which is involved in photosynthesis in plants, is a coordination complex of magnesium. A coordination complex is the product of a Lewis acid-base reaction in which neutral molecules or anions (called ligands) bond to a central metal atom (or ion) by coordinate covalent bonds.. Ligands are Lewis bases - they contain at least one pair of electrons to donate to a metal atom/ion. Ligands are also called complexing agents. For example, the oxygen-carrier of blood, i.e., haemoglobin, is a coordination compound of iron. redox: A reversible chemical reaction in which one reaction is an oxidation and the reverse is a reduction. The Ca 2+ and Mg 2+ ions form stable complexes with EDTA. e.g., Potassium ferrocyanide, K 4 [Fe(CN) 6]. 2. The pigment responsible for photosynthesis, chlorophyll, is a coordination compound of magnesium. the central metal atom or ion is linked by ions or molecules with coordinate bonds. Importance and Application of Coordination Compounds: EDTA is used in the estimation of Ca 2+ and Mg 2+ in hardwater. What Is A Coordination Compound? In these compounds. This pigment is a coordination compound of magnesium. It is a tribute to clever coordination chemistry that gram quantities of potentially toxic gadolinium ions can be safely injected into a patient undergoing an MRI scan, in fact into millions of patients each year. Name Function . ; Coordination is a principle of management, and all other principles are included in this one principle, i.e. Coordination compounds play important roles in nature. Key Terms. ; Metals can be purified by the formation and subsequent decomposition of their coordination compounds. Hemoglobin, the oxygen transporter in the human body, is a coordination complex of iron. Coordination is a function of management. Coordination Entity A chemical compound in which the central ion or atom (or the coordination centre) is bound to a set number of atoms, molecules , or ions is called a coordination entity . Haemoglobin Transport and storage of oxygen . Among them, coordination compounds also play a key role in serving humanity as these compounds have a wide range of applications in health care from antimicrobial to anticancer, bioengineering, bio-mimetic models, catalysis, photosensitized materials etc. 1. coordination: The reaction of one or more ligands with a metal ion to form a coordination compound. The definitions of some important terms in the chemistry of coordination compounds can be found below. 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