Содержание
- 2. LECTURE OBJECTIVES: After reading this lesson, the learner will be able to state the postulates of
- 3. Skills to Develop To know the most common structures observed for metal complexes. To predict the
- 4. A salt is formed by the neutralization of an acid by a base. There are different
- 5. One of the important aspects of any chemical research is the preparation of new compounds. This
- 7. A central metal atom bonded to a group of polar molecules or ions is a metal
- 8. Coordination complexes (a complex ion) is comprised of two important parts: the central atom and its
- 9. THE CENTRAL ATOM It is can be: any metallic ion (usually a transition d- or f-metal);
- 10. Coordination compounds are complex or contain complex ions, for example: Complex Cation: [Co(NH3)6]3+ Complex Anion: [CoCl4(NH3)2]−1
- 11. The modern theory of coordination chemistry is based largely on the work of Alfred Werner (1866–1919;
- 12. STRUCTURE OF COMPLEXES: Central Metal Ion: It is an acceptor atom containing vacant orbitals to which
- 13. Coordination Sphere: Central atom and ligands comprise the inner coordination sphere; complex ion enclosed in square
- 14. LIGANDS It is an ion or polar molecule capable of donating a pair of electrons to
- 16. Coordination Number: It is the total number of ligands attached to the central metal atom through
- 17. Oxidation number: It is the charge which the central atom appears to have if all the
- 18. Or, knowing the oxidation number on the metal and the charges on the ligands, one can
- 19. STRUCTURE OF COORDINATION COMPOUND Cu Cl +2 - [ [ [Cu(NH3)4]Cl2 КОМПЛЕКСООБРАЗОВАТЕЛЬ LIGANDS COORDINATION NUMBER- 4
- 20. Classification of complex compounds: By the charge of the complex ion [Cr(H2O)4]3+Cl3 [PtCl4(NH3)2] 0 K2[PtCl6]2- [Cu(NH3)4]2+[PtCl4]2-
- 21. By composition of ionization sphere H2[PtCl6] Na3[AlF6] [Pt(NH3)2Cl2] [Ag(NH3)2]OH
- 22. By the nature of the ligand: [Fe(H2O)6]SO4 K[Au(CN)4] [Zn(NH3)4]Cl2 [CoCl(NH3)3(H2O)2](NO3)2
- 23. Nomenclature of Coordination Compounds The basic protocol in coordination nomenclature is to name the ligands attached
- 27. Nomenclature of Coordination Compounds As is the case with ionic compounds, the name of the cation
- 28. Nomenclature of Coordination Compounds The names of anionic ligands end in “o”; the endings of the
- 29. Examples of Naming Coordination Compounds Some examples of IUPAC names are: diamminedichloroplatinum (II) pentaamminecobalt (III) chloride
- 30. Preparation of complex compounds Complex compounds prepared by such reactions: 1) Connection reactions: HgI2 + 2KI
- 31. Nature of chemical bonding in complex compounds Structure physico-chemical and biological properties of complex compounds depend
- 32. PROPERTIES OF COMPLEX COMPOUNDS 1) Dissociation of complex compounds. Complex compounds are strong electrolytes. In aqueous
- 33. 2) Stability of complex compounds. This formation constant (Kf), describes the formation of a complex ion
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