Titlebook: Overlap Determinant Method in the Theory of Pericyclic Reactions; Robert Ponec Book 1995 Springer-Verlag Berlin Heidelberg 1995 Chemical r

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Theory of Frontier Orbitals,t of the maximal positive overlap between the highest occupied molecular orbital HOMO and the lowest unoccupied molecular orbital LUMO. The practical use of this simple rule can be again best demonstrated by concrete examples. The simplest situation is in the case of cycloadditions where the role of

讓步

Overlap Determinant Method,e set of bonds μ. into the product characterized by the set of bonds μ. In classifying the character of the reaction, the key role is played by the mutual relation of corresponding sets. A similar situation is also encountered with the technique of correlation diagrams, where the question of the mut

粗俗人

Least Motion Principle, reactivity a new dimension connected with the possibility to visualize and to quantify the extent of the changes of electron structure accompanying the chemical reactions. This circumstance has important consequences not only as a certain enrichment of the classical picture of chemical reaction in

幾何學(xué)家

Mechanisms of Pericyclic Reactions,deed, the formalism of the method is so flexible and universal that it can be applied also to other problems considerably exceeding the scope of the applicability of Woodward- Hoffmann rules. One of the most important such applications concerns the possibility of the detailed insight into the mechan

CAMP

Miscelaneous,esponding transition states. Thus, e.g., the ease of a majority of Diels-Alder reactions is related to the fact that transient structure created by approaching the diene and dienophilic components is isoconjugated, or in other words, topologically equivalent, with the aromatic benzene and as a such

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hrer Adolf Hitler bei. Nie vergi?t er, die deutschen Ingenieure zu nennen, wenn er von denen spricht, auf die seine gewaltigen Taten sich stützen und auf deren Leistungen Deutschland angewiesen ist. Deutschland ist eines der dichtest bev?lkerten L?nder der Erde; ohne die h?chsten Leistungen seiner I

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