RENIN 发表于 2025-3-25 05:35:06
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Molecular Fine Structure,en these spin multiplets are often very sensitive to the details of the charge distribution, they provide a test of the zero-order wave functions that are used to calculate them.* We are, therefore, dealing with weak forces that have conspicious, measurable, and calculable effects.开始发作 发表于 2025-3-25 16:40:47
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,Hydrogen Bonding and Donor—Acceptor Interactions,properties of hydrogen-bonded complexes prior to experimental observation. Second, the . calculations have been the standard against which semiempirical MO calculations and model theories could be evaluated. Finally, these calculations have provided an important framework for understanding the chemi责任 发表于 2025-3-26 12:01:50
Direct Use of the Gradient for Investigating Molecular Energy Surfaces,r fixed-nuclei approximation is sufficient: the nuclear motion takes place on an effective potential surface which is the sum of the electronic energy and the nuclear repulsion as a function of the nuclear coordinates. One of the main fields of quantum chemical activity is the study of these surfacePOINT 发表于 2025-3-26 14:09:19
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Strained Organic Molecules,els of limited application (e.g., .-electron theories for planar systems) to elaborate . models which include all electrons and are applicable to general molecular geometries.. Furthermore, the power of present generation computers means that these . techniques can now be feasibly applied to rather