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- W56317814 abstract "Reliable quantitative predictions from quantum chemical calculations are a rather recent part of the organo-metallic chemistry scene. The delay, compared to the rate of development in the case of small-to medium-sized organic molecules, was caused largely by the wide variety of valence electronic structures which come into play for transition metal organometallics. Such diversity of hybridization candidates is a challenge to commonly used Density Functional approximations, so it has been somewhat surprising that much of the recent theoretical and computational progress has come from DF calculations. For insight into both the power and limitations of current DF methodology, therefore, we give a descriptive, detailed, but minimally mathematical survey of the ingredients of Hohenberg-Kohn-Sham theory as currently practiced. This overview is followed by a description of the techniques used to build realistic chemistry and physics into the required approximations. After that the origins, properties, and inter-relationships of the more widely used approximations are discussed. In the final section, we give a brief account of the accuracy of current exchange-correlation approximations and of the way in which semi-empirical DF variants are calibrated. A suggestive survey highlights applications to transition metal organometallics, and, as a detailed example, a case study of oxygen transfer reactions by transition metal oxo and peroxo complexes is presented." @default.
- W56317814 created "2016-06-24" @default.
- W56317814 creator A5000930582 @default.
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- W56317814 date "1999-01-01" @default.
- W56317814 modified "2023-10-16" @default.
- W56317814 title "A Critical Assessment of Density Functional Theory with Regard to Applications in Organometallic Chemistry" @default.
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