Titlebook: Unified Valence Bond Theory of Electronic Structure; Applications Nicolaos Demetrios Epiotis Textbook 1983 Springer-Verlag Berlin Heidelber

使长胖

The Molecular Orbital-Valence Bond Theory of Excited Statesel and this one, it is hoped that the reader will have no difficulty seeing that the energy ordering of . and the energy ordering of . are analogous problems which can be handled by the same MOVB concepts.

Ergots

Proclaim

The “Forbidden” World of Chemistrye molecule, a transition state, or, any molecular system, in general, can be thought of as the product of a “forbidden” or “allowed” union of two component fragments with the latter mode of union being energetically more favorable than the former one.

BROOK

The Saga of “Hypervalent” Moleculessification of molecules which contain an even number of valence electrons into four major types depending upon the presence or absence of electron pairs or holes in the core and/or ligand fragments in the . (R) Configuration Wavefunction (CW) representing the entire system.

迁移

Why Benzene prefers to substitute and an Olefin likes to add?ticity”, and the like. In this chapter, we suggest that, while the experimental facts are indisputable, the concepts which chemists have devised over more than a century are most likely erroneous and that benzene is pi destabilized but operationally “aromatic”.

通情达理

Geometric Isomerism: The Simplest Illustrator of Orbital Symmetry Control of Molecular Stereochemiston .. This is clearly revealed by the Longuet-Higgins-Abrahamson-Woodward-Hoffmann MO correlation diagrams. for con- and dis-rotatory ring closure of 1,3-butadiene. The conrotatory ring closure of 1,3-butadiene is termed a symmetry “allowed” and the disrotatory ring closure of the same molecule is termed a “forbidden” reaction.

轮流

The Induced Deexcitation Modely unrelated experimental observations often leads to the formulation of concepts and rules of broad applicability. One demonstration of how such a marriage of knowledge and intuition can bear offspring was given by Walsh, who, many years ago, recognized that many experimental facts, which were known

meditation

Why do Organolithium Monomers have Strange Structures? most important findings of the imaginative computational work of Schleyer and his coworkers.. What fundamental property of lithium is primarily responsible for the unexpected geometrical preferences of perlithio hydrocarbons? Is there some way to predict the geometry of these molecules? These and r

LEER

eardrum