Reaction potential map analysis of chemical reactivity—III |
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Authors: | Hideki Moriishi Osamu Kikuchi Keizo Suzuki Gilles Klopman |
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Institution: | (1) Department of Chemistry, The University of Tsukuba, 305 Sakura, Ibaraki, Japan;(2) Department of Chemistry, Case Western Reserve University, 44106 Cleveland, Ohio, USA |
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Abstract: | Reaction potential maps (RPM) have been introduced as a new tool for the study of molecular reactivity. The equipotential energy maps, which are created on given planes around a molecule, define reaction contours towards specific counter-reagent models and are evaluated by perturbation theory. Since the calculated interaction energy involves electrostatic, polarization, exchange, and charge transfer energies, the RPM's can be used to predict site selectivity in a variety of chemical reactions. We found that the calculated RPM's of the SCN– anion explained well the experimental observations that it reacts at the S atom with soft electrophiles and at the N atom with hard electrophiles. The difference in reactivity between SCN– and OCN– was clearly shown by the RPM's of these anions. The ambident nucleophilic nature of the NO
2
–
and the CH2CHO– anions was also well represented by their RPM's. |
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Keywords: | Reaction potential map Reactivity Ambident anions SCN– OCN– NO
2
– CH2CHO– |
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