In scientific literature, "Gaussian 98" is frequently abbreviated as . Researchers use it to perform various high-level calculations, including MP4 (Møller–Plesset fourth-order perturbation theory), which is a sophisticated method for describing electron correlation in molecules. Scientific Applications of G98 and MP4

Researchers across various fields of chemistry and physics utilize G98 for several critical tasks:

: The software is essential for optimizing transition states and verifying minimum energy structures in chemical reactions.

: Specialized articles utilize Gaussian 98 to refine electrostatic coupling models in complex biological or chemical environments.

: While Gaussian is primarily for gas-phase molecules, it is often cited in papers discussing the transition from gas-phase properties to the solid state , such as the bonding in rare gas halides.

If you are looking for a specific technical guide or a "solid article" regarding the MP4 method within the G98 suite, the Journal of Quantum Chemistry and ACS Publications are the primary sources for peer-reviewed methodologies and benchmarks.