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Improvements of DRISM calculations: symmetry reduction and hybrid algorithms
Stefan Woelki1, Hans-Helmut Kohler, Hartmut Krienke
1Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, D-93040 Regensburg, Germany. stefan.woelki@chemie.uni-regensburg.de
Abstract:
We present a symmetry-reduced version of the dielectrically-consistent reference interaction site model (DRISM) equation and an adaptation of the Labík-Malijevský-Vonka hybrid algorithm for its numerical solution. This approach is used for the calculation of site-site correlation functions of water, acetone and a water-acetone mixture. Compared to the traditional Picard iteration of non-reduced DRISM theories, savings of more than 90% in computational time are obtained. The resulting site-site pair-correlation functions are in reasonable agreement with computer simulations.
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