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Theoretical Chemistry I Quantum Mechanics (PDF 166p)
This note explains the following topics: Wave Mechanics, Fundamental Concepts of Quantum Mechanics, Quantum Dynamics, Angular Momentum, Approximation Methods, Symmetry in Quantum Mechanics, Theory of chemical bonding, Scattering Theory and Relativistic Quantum Mechanics.
Author(s): Axel Grob
166 Pages 
Lecture note on Physical Chemistry and Theoretical Chemistry
This note covers basic concepts of quantum mechanics, Many electron system, Electronic Structure of atoms and electronic structure of molecules.
Author(s): Peter G.Szalay, Eotvos Lorand University
123 Pages
Introduction to Molecular Mechanics by C. David Sherrill(PDF 43p)
This note covers the following topics: Stretching Interactions, The Force-Field, Stretch Energy, Bend Energy, Torsional Energy, van der Waals Energy, Electrostatic Energy, Fitting Atomic Charges, The Fluctuating Charge Model, Other Polarizable Models, Parameterizing the Force Fields and Heats of Formation.
Author(s): C. David Sherrill
43 Pages