A new discretization for the polarizable continuum model within the domain decomposition paradigm

Area of Science:

• Computational Chemistry
• Theoretical Chemistry
• Quantum Chemistry

Background:

• The polarizable continuum model (PCM) is crucial for simulating solvent effects in quantum chemistry.
• Existing methods for solving PCM equations can be computationally intensive.
• Schwarz's domain decomposition method (ddCOSMO) offers an efficient framework for continuum solvation models.

Purpose of the Study:

• To introduce a novel algorithm for solving the PCM equation.
• To ensure compatibility and consistency with the established ddCOSMO framework.
• To develop a systematically improvable discretization for PCM calculations.

Main Methods:

• Implementation of a new discretization scheme for the PCM equation.
• Integration of the new algorithm within the ddCOSMO framework.
• Utilizing domain decomposition strategies for efficient computation.

Main Results:

• The developed algorithm is fully compatible with the ddCOSMO strategy.
• The new discretization is systematically improvable, allowing for higher accuracy.
• The algorithm reproduces ddCOSMO results accurately, especially for systems with large dielectric constants.

Conclusions:

• A new, compatible, and systematically improvable algorithm for PCM calculations has been presented.
• The method enhances the capabilities of the ddCOSMO framework for solvation modeling.
• This work provides a more robust and accurate approach to simulating chemical systems in solution.