Details of CH3101 (Autumn 2018)

Level: 3 Type: Theory Credits: 4.0

Course CodeCourse NameInstructor(s)
CH3101 Chemistry of Transition Elements Sumit Khanra

Structure and bonding in Coordination Compounds. Crystal-Field Theory and Term Symbols, microstates, R-S coupling, Nephelauxetic effect & ratio. Molecular Orbital Theory (MOT): MO theory of Transition Metal complexes in Octahedral, Tetrahedral & Square Planar Geometric arrangements, Effect of pi-bonding in MO theory, Concept of Metal-Metal Bonding in cluster compounds, quintuple bond. Coordination Chemistry & Spectra: Electronic spectroscopy of Transition Metal Complexes, Ligand Field Spectra, Ligand Field Splitting; Inter-electronic Repulsion Parameter (B); Orgel Diagrams, Tanabe-Sugano Diagrams, Tetragonal Distortions from Octahedral Symmetry & Jahn-Teller Theorem, Selection Rules of Electronic Transition: Laporte Forbidden Rule, Spin Selection Rule Charge Transfer Spectra (CT), Ligand to Metal Charge Transfer (LMCT), Metal to Ligand Charge Transfer (MLCT), Ligand to Ligand Charge Transfer (LLCT). Molecular Magnetism in Coordination Chemistry: Free Atoms & Ions: Spin Coupling, Orbital Coupling, Spin-Orbit Coupling, Russell-Saunders or LS Coupling. Van-Vlecks formula for susceptibility, Strength of Ligand Fields: Weak Field Case & Strong Field Case, Term Splitting & Electronic Configuration. Spin Orbit Coupling on A, E & T Terms. Mononuclear Systems with Metal ions of the First Transition Series: Exchange Coupled Dinuclear and Trinuclear Compounds, Spin Hamiltonian parameters, Heisenberg-Dirac-Van Vleck (HDVV) Hamiltonian, Spin Frustration, Orthogonality of magnetic orbitals, Ferromagnetic & Antiferromagnetic exchange interactions. EPR spectroscopy: Basic Principles, Selection Rules, representation of EPR spectrum, First derivative spectrum, Hyperfine & Superhyperfine interactions, determination of hyperfine coupling constant, Relaxation mechanism, Isotropic, Axial & Rhombic spectra, g-value and factors affecting the values. Reaction Kinetics and Mechanism in Transition Metal Chemistry: Recapitulation, Thermodynamic & Kinetic Stability Substitution reactions in Square Planar Complexes; Rate law for Nucleophilic Substitution in a Square Planar Complexes: Influence of Acid & Base in Rates, Mechanism of Redox Reactions; Electron Transfer Reactions; Outer Sphere Mechanism; Inner Sphere Mechanism.

(1) Inorganic Chemistry by J. E. Huheey, R. L. Keiter and E. A. Keiter, Harper Coollins, New York, (1993); (2) Modern Inorganic Chemistry by W. L. Jolly, McGraw-Hill, New York, (1991); (3) Advanced Inorganic Chemistry: 6th Ed. by F. A. Cotton, G. Wilkinson, C. A. Murillo, M. Bochmann, John Willey Chichester, (1999); (4) Inorganic Chemistry by D. F. Shriver and P. W. Atkins, Oxford University Press, Oxford, (1999).

Course Credit Options

Sl. No.ProgrammeSemester NoCourse Choice
1 IP 1 Core
2 IP 3 Not Allowed
3 IP 5 Not Allowed
4 MR 1 Not Allowed
5 MR 3 Not Allowed
6 MS 5 Core
7 RS 1 Not Allowed
8 RS 2 Not Allowed