Digital library
Textbooks, references and open learning resources.

External
Free Energy 1e (Snee)
Preston Snee · University of Illinois Chicago
In the contents: 1.01: Units and the Perfect Gas Law · 2.01: Work and the inexact differential · 2.02: Reversible and Irreversible Transitions

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Advanced Theoretical Chemistry
Jack Simons · University of Utah
In the contents: 1.02: The Schrodinger Equation and Its Components · 2.02: Bands of Orbitals in Solids · 2.03: Densities of States in 1 2 and 3 dimensions

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Quantum Chemistry
Seymour M. Blinder · University of Michigan
In the contents: 1.01: Atoms and Photons- Origin of the Quantum Theory · 1.02: Waves and Particles · 1.09: Atomic Structure and The Periodic Law

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Time Dependent Quantum Mechanics and Spectroscopy
Andrei Tokmakoff · University of Chicago
In the contents: 3.05: Schrodinger and Heisenberg Representations · 6.03: Diabatic and Adiabatic States · 6.04: Adiabatic and Nonadiabatic Dynamics

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Advanced Statistical Mechanics
Mark Tuckerman · New York University
In the contents: 1.05: Classical microscopic states or microstates and ensembles · 1.06: Phase space distribution functions and Liouville's theorem · 2.03: The Liouville Operator and the Poisson Bracket

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Symmetry
Claire Vallance · University of Oxford
In the contents: 1.02: Symmetry Operations and Symmetry Elements · 1.04: Symmetry and Physical Properties · 1.13: Irreducible representations and symmetry species

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Time Dependent Quantum Mechanics and Spectroscopy 2025e
Andrei Tokmakoff · University of Chicago
This book is meant as a resource for those that study quantum mechanics, dynamics, and spectroscopy of molecular systems. It's written with chemists in mind: people whose view of the world is formed in the language of atoms and molecules. It is also meant as a reference for practitioners in the field who may be familiar with the topic but perhaps not the molecular perspective. This edition adds considerable new material to the 2014 edition as well as extensive editing to the whole book.

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Thermodynamics
Andrea Allgood Carter · Meredith College
In the contents: 4.02: Outcomes Events and Probability · 4.05: Combinatorics and Multiplicity · 7.01: The Molecular Basis for Understanding Simple Entropy Change

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Quantitative NMR
Cynthia K. Larive & Albert K. Korir · University of California, Riverside & Drury University
In the contents: 1.03: How does the population difference in NMR compare to the difference between electronic ground and excited states · 1.04: What is chemical shift and how does it relate to resonance frequency · 1.10: How do T and T relaxation affect NMR spectra

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Quantum Chemistry with Applications in Spectroscopy
Patrick Fleming · California State University East Bay
In the contents: 01: Foundations and Review · 1.02: Some Vectors and Dot Products · 1.05: On Superposition and the Weirdness of Quantum Mechanics

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Nonlinear and Two-Dimensional Spectroscopy (Tokmakoff)
Andrei Tokmakoff · University of Chicago
In the contents: 01: Coherent Spectroscopy and the Nonlinear Polarization · 4.04: How can you characterize fluctuations and spectral diffusion

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Statistical Thermodynamics
Gunnar Jeschke · ETH Zürich
In the contents: 3.04: Grand Canonical Ensemble · 4.04: Entropy and Information · 5.02: Quantum and Classical Statistics

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An Introduction to the Electronic Structure of Atoms and Molecules
McMaster University · Richard F. W. Bader
In the contents: 1.02: Some Important Experiments with Electrons and Light · 2.01: A Contrast of the Old and New Physics · 07: Ionic and Covalent Bonding

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Physical Chemistry for the Biosciences
LibreTexts Textmap
In the contents: 01: Introduction to Physical Chemistry · 1.01: Nature of Physical Chemistry · 1.03: Atomic Mass Molecular Mass and the Chemical Mole

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Surface Science
Roger Nix · Queen Mary, University of London
In the contents: 1.07: Relaxation and Reconstruction · 2.04: PE Curves and Energetics of Adsorption · 2.05: Adsorbate Geometries and Structures

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Quantum States of Atoms and Molecules
Zielinksi et al. · Chemical Education Digital Library
In the contents: 3.04: Operators Eigenfunctions Eigenvalues and Eigenstates · 4.05: The Transition Dipole Moment and Spectroscopic Selection Rules · 6.01: Spatial Degrees of Freedom Normal Coordinates and Normal Modes

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Physical Chemistry
Patrick Fleming · California State University East Bay
In the contents: 1.01: The System and the Surroundings · 1.02: Pressure and Molar Volume · 1.05: Work and Energy

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Electron Paramagnetic Resonance (Jenschke)
Gunnar Jeschke · ETH Zürich
In the contents: 3.01: Physical origin of the (g) shift · 4.01: Physical origin of the hyperfine interaction · 6.01: Physical picture

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Non-Equilibrium Statistical Mechanics
Jianshu Cao · Massechusetts Institute of Technology
In the contents: 01: Stochastic Processes and Brownian Motion · 2.01: Response Relaxation and Correlation · 2.03: Linear Response Theory and Causality

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The Necessity of Entropy: The Macroscopic Argument, The Microscopic Response, and Some Practical Consequences
Judith Herzfeld · Brandeis University
Students often find thermodynamics baffling. This should not be surprising because it took many years for some of the best scientific minds to work it out. Nor should that arduous history be surprising because thermodynamics links visible phenomena with molecular phenomena, two realms that are more often considered separately. However, the grand ambition of this linkage has been elegantly established and there is nothing convoluted about it.