Journal ArticleDOI
Nonplanarity of π systems. An ab initio study of norbornene and norbornadiene
G. Wipff,K. Morokuma +1 more
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TLDR
In this article, the exo addition of electrophiles on norbornene systems is analyzed in this context, and the geometry of norbornenes 1 and norbornadiene 2 is fully optimized by ab initio calculations.About:
This article is published in Tetrahedron Letters.The article was published on 1980-01-01. It has received 51 citations till now. The article focuses on the topics: Ab initio & Norbornene.read more
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Proximity Effects in Organic Chemistry—The Photoelectron Spectroscopic Investigation of Non‐Bonding and Transannular Interactions
TL;DR: In this article, photoelectron spectroscopy has proven an informative and valuable extension to other methods, since orbital interactions are involved in most intramolecular effects of this kind.
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Das Konzept der Spannung in der Organischen Chemie
TL;DR: In this article, Baeyer et al. show that the Ringschliesung is offenbar diejenige Erscheinung, welche am meisten ube dir raumliche Anordnung der Atome Auskunft geben Kann.
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Proximitätseffekte in der Organischen Chemie — Die photoelektronenspektroskopische Untersuchung nichtbindender und transanularer Wechselwirkungen
TL;DR: In this article, aussagekraftige and wertvolle Erganzung der and other methoden erwiesen is discussed. But, in this paper, we focus on the photo-elektronenspektroskopie.
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Azobrücken aus Azinen, I. Isopyrazole als elektronenarme Diene zur Synthese von 2,3‐Diazabicyclo[2.2.1]heptenen
TL;DR: In this article, a general principle for cycloaddition in Diels-Alder reactions with inverse electron demand is described, where protonated azines serve as electron deficient dienes and electron rich olefins as dienophiles.
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Catalytic decomposition of diazomethane as a general method for the methylenation of chemical compounds
TL;DR: In this article, the principal advances and trends in the application of diazomethane as a methylenating agent in synthetic chemistry using transition and non-transition metal compounds as catalysts are surveyed and analysed.
References
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Why do molecules interact? The origin of electron donor-acceptor complexes, hydrogen bonding and proton affinity
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Efficient determination and characterization of transition states using ab-initio methods
TL;DR: In this article, the gradient of the potential energy with respect to nuclear coordinates has been calculated using ab-initio single determinant molecular orbital methods and the calculated gradient is used together with very efficient minimization methods to locate and characterize transition states on many-dimensional potential energy surfaces.
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