Term: multireference configuration interaction (MRCI)
https://doi.org/10.1351/goldbook.MT07424

Definition:
Configuration-interaction method in which the configurations are built by excitation out of a wavefunction obtained by using, e.g., the multiconfiguration SCF method.

Note: One of the methods to account for dynamic correlation.

Related Terms:
1) multiconfiguration scf method. (http://doi.org/10.1351/goldbook.MT07075).

Source: PAC, 2007, 79, 293. 'Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)' on page 373 (https://doi.org/10.1351/pac200779030293)

Citation: 'multireference configuration interaction (MRCI)' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.MT07424

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