G_098.mp4 -

: Calculations such as MP2, MP3, and MP4(SDQ) are used to provide accurate descriptions of molecular structures, including complex van der Waals interactions.

The reference (specifically in the context of "mp4" and "solid article") most likely refers to the Gaussian 98 computational chemistry software package used for molecular modeling and quantum chemistry calculations. g_098.mp4

: 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. : Calculations such as MP2, MP3, and MP4(SDQ)