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Chemistry
Inorganic Chemistry
Coordination Chemistry
Basic Concepts and Definitions
Coordination Compound and Complex
Central metal ion or atom
Ligands and their classification
Unidentate ligands
Bidentate ligands
Polydentate ligands
Bridging ligands
Coordination number and types of coordination
Coordination sphere and representation
Ligands
Types of Ligands
Neutral ligands
Anionic ligands
Cationic ligands
Ligand Isomerism
Constitutional (structural) isomers
Ionization isomers
Hydrate isomers
Linkage isomers
Stereoisomers
Geometric isomers
Optical isomers
Ligand Valence
Denticity and the concept of hapticity
Chelating ligands
Ambidentate ligands
Coordination Number and Geometry
Common coordination numbers
2- Coordination (Linear)
3-Coordination (Trigonal planar)
4-Coordination (Tetrahedral, Square planar)
5-Coordination (Trigonal bipyramidal, Square pyramidal)
6-Coordination (Octahedral)
Higher coordination numbers
Factors Affecting Coordination Geometry
Ligand size and steric effects
Electronic considerations
Metal ion size
Complex Stability
Stability Constants
Stepwise stability constants
Overall stability constants
Thermodynamic Stability
Energetics of complex formation
Entropy and enthalpy changes
Kinetic Stability
Labile and inert complexes
Kinetics vs. thermodynamics
Factors Affecting Stability
Chelate effect
Steric effects in ligands
Hard/soft acid-base (HSAB) concept
Electronic effects of metal ions and ligands
Crystal Field Theory (CFT)
Splitting of d Orbitals
Octahedral complexes
Tetrahedral complexes
Square planar complexes
Crystal Field Stabilization Energy (CFSE)
Calculating CFSE
High-spin and low-spin configurations
Effects on Magnetic Properties
Paramagnetism vs. Diamagnetism
Color and Spectrochemical Series
Origins of color in complexes
Spectrochemical series and ligands effect on Δ value
Ligand Field Theory (LFT)
Integration with Molecular Orbital Theory
Mixing of metal and ligand orbitals
Bonding, antibonding, and non-bonding interactions
Comparison with CFT
More accurate description of complexes
Influence on complex stability and reactivity
Chelation
Chelate Effect
Definition and implications in stability
Thermodynamic origins of chelate effect
Macrocyclic and Cryptate Effect
Ring size and number of atoms in chelates
Exceptional stability in macrocyclic complexes
Applications of Chelating Agents
Biological systems (e.g., hemoglobin, enzymes)
Industrial processes (e.g., metal extraction)
Medicinal chemistry (e.g., metal detoxification)
Applications of Coordination Compounds
Industrial Applications
Catalysis and material science
Pigments and dyes
Biological Systems
Metalloprotein function and structure
Metal ion storage and transport
Medicines and Pharmaceuticals
Metal-based drugs (e.g., cisplatin)
Diagnostic agents
Environmental Applications
Role in remediation and pollution control
Complexes in metal sequestration
3. Inorganic Compounds
First Page
5. Organometallic Chemistry