Comparison of the Hirshfeld-I and iterated stockholder atoms in molecules schemes

文献信息

发布日期 2009-03-03
DOI 10.1039/B821734C
影响因子 3.676
作者

Patrick Bultinck, David L. Cooper, Dimitri Van Neck


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摘要

Two recently introduced self-consistent Hirshfeld procedures for obtaining atoms in molecules are compared in detail. The Hirshfeld-I scheme introduces self consistency by requiring that the atomic population of the promolecular atom is equal to that of the atom-in-the-molecule. In the iterated stockholder atoms (ISA) approach, self consistency is obtained by requiring that for every value of the radius of a sphere around every nucleus, the average electron density on the surface of this sphere is the same in the promolecular atom and in the atom in the molecule. The relationships between the two schemes are examined, and common backgrounds and differences are discussed. Whereas it can be argued that the Hirshfeld-I approach has a stronger physical background, the ISA scheme avoids having to define what states of the atoms are to be considered when constructing the promolecule.

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DOI: 10.1039/D0CP90263B

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来源期刊

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
自引率: 10.3%
年发文量: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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