Introduction to Quantum Mechanics with Applications to Chemistry

Introduction to Quantum Mechanics with Applications to Chemistry, written by Linus Pauling and E. Bright Wilson, is a classic textbook that introduces the principles of quantum mechanics with particular emphasis on their applications to chemical and molecular systems. Originally published in 1935, the book was designed for chemistry students, experimental physicists, and beginning students of theoretical physics. The book begins with an overview of classical mechanics and the early quantum theory before developing the foundations of wave mechanics and the Schrödinger equation. Its main topics include wave functions, the hydrogen atom, perturbation theory, variational methods, electron spin, the Pauli exclusion principle, many-electron atoms, and the rotational and vibrational properties of molecules. It also discusses the application of quantum mechanics to the structures of simple and complex molecules. A central contribution of this work is its systematic connection between quantum theory and chemical phenomena. It demonstrates how quantum-mechanical principles can be used to understand atomic and molecular structures, chemical bonding, intermolecular interactions, and molecular properties. Although it predates many modern developments in quantum chemistry, it remains historically and educationally valuable as a foundational text connecting quantum mechanics with chemistry.