Coming soon
Computational Chemistry
Course Objectives :
The course aims to give the knowledge of different methods, techniques and basic concept of computational chemistry so that the students will be able to use computational chemistry to solve inorganic chemistry, organic chemistry and physical chemistry.
Course Outcomes (Cos):
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COURSE |
Learning outcomes (at course level) |
Learning and teaching strategies |
Assessment Strategies |
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Paper Code |
Paper Title |
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CHY 426 |
Computational Chemistry |
The students will be able to-
CO171-differentiate between molecular mechanics, semi emperical, ab initio and correlation methods. CO172-explain different steps in a model reaction CO173-know strength and weaknesses of DFT method. CO174-determine some properties of molecules such as basicity, electron affinity, ionization potential, 1H NMR chemical shift. |
Class lectures
Tutorials
Group discussions
Question preparation Subjective type Long answer Short answer Objective type Multiple choice questions One answer/two answer type questions Assertion and reasoning |
Assignments
Written Test
Semester End Exam
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Introduction, Scope of computational chemistry.
Molecular mechanics / force field methods, the force field energy, advantages and limitations of molecular mechanics methods.
Electronic Structure Methods: The Schrödinger equation, molecular Hamiltonian, Born-Oppenheimer approximation, self-consistent field theory, Koopmans’ theorem, Hartee-Fock theory, restricted and unrestricted Hartree-Fock, the variation principle, SCF techniques, Rootham-Hall equation, semi-empirical methods: CNDO, MINDO, MNDO, AM1, MNDO-PM3, limits and advantages of semi-empirical methods.
Excited slater determinants, Configuration Interaction (CI), Multi-configuration Self-consistent Field (MCSCF), Complete Active Space Self-consistent Field (CASSCF), many-body perturbation theory, Møller-Plessetperturbation theory, Coupled Cluster (CC) methods, density functional theory, local density methods, gradient corrected methods, hybrid methods.
slater and gaussian type orbitals, polarization and diffuse functions, split-valence sets, classification of basis sets, even- and well-tempered basis sets, pople style basis sets, Dunning-Huzingabasis sets, correlation consistent basis sets, extrapolation procedures, effective core potential basis sets.
Introduction to Potential Energy Surface(PES), local minimum, global minimum, and saddle point, convergence criteria, transition structures, frequency calculations, zero-point corrections, thermo chemistry, Intrinsic Reaction Coordinate (IRC) analysis, calculation of activation and reaction enthalpies, Some illustrative examples: Ethylene, 1,3-butadiene, 1-fluoropropane, vinyl alcohol, isodesmic and isogyric reactions, natural bond orbital analysis.
Relative stabilities of cyclopropane, oxirane, azirane and phosphirane; aromaticity indices: Julg concept, Aromatic Stabilization Energies (ASE), Nucleus Independent Chemical Shift (NICS) values, magnetic susceptibility exaltation, 1H NMR chemical shift values of cyclopropenium cation, cyclopentadienyl anion, cyclobutadiene (antiaromatic) and benzene, electron affinity, electrophilicity and nucleophilicity indices, chemical potential.
Application of DFT to Thermodynamic properties, Geometrics, Charges (e.g.- glycine cation), dipole moment, electrostatic potential (acetyl chloride & acetamide), gas phase acidities and pKa values, supramolecular chemistry (quinhydrone complex), dye chemistry.
The calculation of NMR parameters in transition metal complexes, excitation energies of metal complexes with Time-dependent DFT, application of Hybrid-DFT to Homogenous catalysis, DFT computation of relative spin – state and energetics of transition metal compounds.
Phase transformation in ZnS under Hydrostatic pressure, optical properties, structural properties, phase diagram.
- Exploring Chemistry with Electronic Structure Methods; Third Edition; J. B. Foresman and A. Frisch, Gaussian, 2015.
- Ab Initio Molecular Orbital Theory; First Edition, W.J. Hehre, L. Radom, P.R. Schleyer and J. Pople; John Wiley Interscience, 1986.
- Computational Chemistry; First Edition, A.C. Norrin; John Wiley& Sons, 1981.
- Introduction to Computational Chemistry; Second Edition, F. Jensen; John Wiley &Sons, 2007.
