This section collects notes on papers that established discipline-wide frameworks in computational chemistry. The curation criterion is scope: a note belongs here when the paper introduced a concept, model, or mathematical structure that became a field-level reference, cited and reused across subfields rather than within a single technique area. Lennard-Jones’s 1932 treatment of adsorption is an example: by framing the interaction between a gas molecule and a solid surface as a potential energy surface (a mathematical description of how system energy varies with atomic positions), it gave the entire field a shared vocabulary for modeling gas-solid interactions that persists today. Papers that are historically important within a specific technique, such as the embedded atom method papers in molecular dynamics, are filed under their technique subcategory instead.
The Number of Isomeric Hydrocarbons of the Methane Series
A foundational 1931 paper that derives exact recursive formulas for counting alkane structural isomers, correcting historical errors and establishing the first systematic enumeration up to C₄₀.
