Contents -- Preface -- Introduction -- Chapter 1. Quantum Chemistry qua Physics: The Promises and Deadlocks of Using First Principles -- The Old Quantum Chemistry: Bonds for Physicists and Chemists -- Walter Heitler and Fritz London: Outlining a Program for Quantum Chemistry -- Erich Hückel: Nonvisualizability and the Quantum Theory of the Double Bond -- Hans Hellmann: Fundamental Theorems and Semiempirical Approaches -- Friedrich Hund: Foundations of Molecular Spectroscopy in Quantum Mechanics -- Some Further Remarks -- Chapter 2. Quantum Chemistry qua Chemistry: Rules and More Rules -- The Young Mulliken: Hinting at Molecular Orbitals -- Gilbert Newton Lewis: A Precursor -- Linus Pauling: Exploring Different Possibilities for a Quantum Mechanical Theory of Valence -- 1931: The Annus Mirabilis for Quantum Chemistry -- Two Parallel Research Agendas -- The Development of Mulliken' s Program: What Are Electrons Really Doing in Molecules? -- Playing the Devil's Advocate -- Heitler and London: The Lost Battle -- Legitimation through Pedagogical Considerations -- Two Nobel Prizes Worlds Apart -- Some Further Remarks -- Chapter 3. Quantum Chemistry qua Applied Mathematics: Approximation Methods and Crunching Numbers -- The 1923 Faraday Society Meeting and Its Aftermath: Sensing the Road Ahead -- First Incursions into Atomic and Molecular Calculations -- The 1929 Faraday Society Meeting and the 1931 British Association for the Advancement of Science Meeting -- The 1933 Faraday Society Meeting and the 1934 International Conference in Physics -- Further Developments in Molecular and Atomic Calculations -- Charles Alfred Coulson: A New Research Agenda -- Some Further Remarks -- Chapter 4. Quantum Chemistry qua Programming: Computers and the Cultures of Quantum Chemistry -- The Newcomers: Quantum Chemistry's Forays into New Realms.

The 1951 Shelter Island Conference -- The 1953 Nikko Symposium and Slater ' s Solid-State and Molecular Theory Group -- Quantum Chemistry as a Lifestyle -- Old Contexts, New Agendas: Quantum Chemistry as a Quasi Laboratory Science -- A New Era -- Some Further Remarks -- Chapter 5. The Emergence of a Subdiscipline: Historiographical Considerations -- The Role of Theory in Chemistry -- The Theoretical Particularity of Chemistry -- Notes -- Bibliography -- Index.