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CHAPTER 9 Coordination Compounds In EDTA, a metal ion, two oxygen atoms and two nitrogen a toms comprise a square O O C CH2 O CH2 C O Pb N O CH2 CH2 N CH2 C O Heavy metal toxicity in humans is the cause of many health disorders. The medical condition caused by increased levels of the heavy metal lead in the body is called lead poisoning and is known to interfere with a variety of body processes and is toxic to many organs and tissues. Chelation therapy using EDTA is the medically accepted treatment for lead poisoning. CH2 O C How does EDTA clear lead poisoning? O Conceptual Objectives • Explanation of Werner’s theory of coordination compounds. • Definitions of some important terms related to coordination compounds. • The nomenclature of coordination compounds. • The types of isomerism exhibited by coordination compounds. Chap_09.indd 1 • The bonding in coordination compounds − Valence Bond Theory (VBT) and Crystal Field Theory (CFT). • The bonding in metal carbonyls. • The stability and important applications of coordination compounds. 9/16/2011 10:31:38 AM

Ch-9 Chemistry

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