Coordinate Compounds - Coordination Numbers

• Introduction to coordination compounds
• Definition of coordination number
• Examples of coordination compounds:
  • [Fe(CN)6]4-
  • [Cu(NH3)4]2+
  • [Co(NH3)6]3+
  • [PtCl4]2-
• Explanation of coordination number:
  • The number of ligands attached to the central metal ion
  • Determines the geometry and properties of the complex

Types of Coordination Numbers

• Spherical coordination number
• Planar coordination number
• Linear coordination number
• Tetrahedral coordination number
• Octahedral coordination number
• Complex examples for each coordination number

Spherical Coordination Number

• Coordination number of 2
• Examples: [Ag(NH3)2]+, [AgCl2]-, [AuCl2]-
• Geometry: Linear
• Explanation of spherical coordination number

Planar Coordination Number

• Coordination number of 3
• Examples: [Ni(CN)2]2-, [PtCl3]-, [PdCl2]
• Geometry: Trigonal planar
• Explanation of planar coordination number

Linear Coordination Number

• Coordination number of 4
• Examples: [Ni(CO)4], [PtCl4]2-, [NiCl4]2-
• Geometry: Tetrahedral
• Explanation of linear coordination number

Tetrahedral Coordination Number

• Coordination number of 4
• Examples: [Fe(CN)4]2-, [AlF4]-
• Geometry: Tetrahedral
• Explanation of tetrahedral coordination number

Octahedral Coordination Number

• Coordination number of 6
• Examples: [Co(H2O)6]2+, [Ni(en)3]2+, [Cr(CN)6]3-
• Geometry: Octahedral
• Explanation of octahedral coordination number

Factors Affecting Coordination Number

• Size and charge of the central metal ion
• Size and charge of the ligand
• Electronic configuration of the metal ion
• Nature of the ligand
• Explanation of each factor with examples

Application of Coordination Compounds

• Inorganic chemistry
• Organic chemistry
• Biological systems
• Example: Hemoglobin and myoglobin
• Importance of coordination compounds in various fields

Summary

• Recap of coordination compounds and coordination numbers
• Importance of coordination compounds in various applications
• Importance of understanding coordination numbers in studying complex compounds
• Questions and clarifications

Coordinate Compounds - Coordination Numbers

• Introduction to coordination compounds
• Definition of coordination number
• Examples of coordination compounds:
  • [Fe(CN)6]4-
  • [Cu(NH3)4]2+
  • [Co(NH3)6]3+
  • [PtCl4]2-
• Explanation of coordination number:
  • The number of ligands attached to the central metal ion
  • Determines the geometry and properties of the complex

Types of Coordination Numbers

• Spherical coordination number
• Planar coordination number
• Linear coordination number
• Tetrahedral coordination number
• Octahedral coordination number
• Complex examples for each coordination number

Spherical Coordination Number

• Coordination number of 2
• Examples: [Ag(NH3)2]+, [AgCl2]-, [AuCl2]-
• Geometry: Linear
• Explanation of spherical coordination number

Planar Coordination Number

• Coordination number of 3
• Examples: [Ni(CN)2]2-, [PtCl3]-, [PdCl2]
• Geometry: Trigonal planar
• Explanation of planar coordination number

Linear Coordination Number

• Coordination number of 4
• Examples: [Ni(CO)4], [PtCl4]2-, [NiCl4]2-
• Geometry: Tetrahedral
• Explanation of linear coordination number

Tetrahedral Coordination Number

• Coordination number of 4
• Examples: [Fe(CN)4]2-, [AlF4]-
• Geometry: Tetrahedral
• Explanation of tetrahedral coordination number

21. Octahedral Coordination Number

• Coordination number of 6
• Examples: [Co(H2O)6]2+, [Ni(en)3]2+, [Cr(CN)6]3-
• Geometry: Octahedral
• Explanation of octahedral coordination number

22. Factors Affecting Coordination Number

• Size and charge of the central metal ion
• Size and charge of the ligand
• Electronic configuration of the metal ion
• Nature of the ligand
• Explanation of each factor with examples

23. Application of Coordination Compounds

• Inorganic chemistry
• Organic chemistry
• Biological systems
• Example: Hemoglobin and myoglobin
• Importance of coordination compounds in various fields

24. Summary

• Recap of coordination compounds and coordination numbers
• Importance of coordination compounds in various applications
• Importance of understanding coordination numbers in studying complex compounds
• Questions and clarifications

25. Example of Octahedral Coordination

• [Cu(NH3)4(H2O)2]2+
  • Coordination number: 6
  • Geometry: Octahedral
  • Ligands: Four NH3 and two H2O
• [Fe(CN)6]4-
  • Coordination number: 6
  • Geometry: Octahedral
  • Ligands: Six CN-

26. Example of Tetrahedral Coordination

• [AlF4]-
  • Coordination number: 4
  • Geometry: Tetrahedral
  • Ligands: Four F-
• [Fe(CN)4]2-
  • Coordination number: 4
  • Geometry: Tetrahedral
  • Ligands: Four CN-

27. Example of Linear Coordination

• [Ni(CO)4]
  • Coordination number: 4
  • Geometry: Linear
  • Ligands: Four CO
• [PtCl4]2-
  • Coordination number: 4
  • Geometry: Linear
  • Ligands: Four Cl-

28. Example of Planar Coordination

• [Ni(CN)2]2-
  • Coordination number: 3
  • Geometry: Trigonal planar
  • Ligands: Two CN-
• [PtCl3]-
  • Coordination number: 3
  • Geometry: Trigonal planar
  • Ligands: Three Cl-

29. Example of Spherical Coordination

• [Ag(NH3)2]+
  • Coordination number: 2
  • Geometry: Linear
  • Ligands: Two NH3
• [AgCl2]-
  • Coordination number: 2
  • Geometry: Linear
  • Ligands: Two Cl-

30. Factors affecting Coordination Number

• Size and charge of the central metal ion
  • Larger metal ions can accommodate more ligands
  • Higher charge on the metal ion attracts more ligands
• Size and charge of the ligand
  • Smaller ligands can easily coordinate with metal ions
  • Higher charge on the ligand attracts the metal ion more strongly
• Electronic configuration of the metal ion
  • Unfilled d or f orbitals prefer higher coordination numbers
• Nature of the ligand
  • Ligands with multiple donor atoms can have higher coordination numbers