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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >The classification and representation of main group element compounds that feature three-center four-electron interactions
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The classification and representation of main group element compounds that feature three-center four-electron interactions

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This article provides a means to classify and represent compounds that feature 3-center 4-electron (3c-4e) interactions in terms of the number of electrons that each atom contributes to the interaction. Specifically, Class I 3c-4e interactions are classified as those in which two atoms provide one electron each and the third atom provides a pair of electrons (i.e. LX2), while Class II 3c-4e interactions are classified as those in which two atoms each provide a pair of electrons and the third atom contributes none (i.e. L(2)Z). These classes can be subcategorized according to the nature of the central atom. Thus, Class I interactions can be categorized according to whether the central atom provides one (i.e. mu-X) or two (i.e. mu-L) electrons, while Class II interactions can be categorized according to whether the central atom provides none (i.e. mu-Z) or two (i.e. mu-L) electrons. The use of appropriate structure-bonding representations for these various interactions provides a means to determine the covalent bond classification of the element of interest.

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