Titre :	Stereoelectronic effects: a bridge between structure and reactivity
Type de document :	texte imprimé
Auteurs :	Alabugin, Igor V., Auteur
Editeur :	Chichester : Wiley
Année de publication :	2016
Importance :	viii, 381 p.
ISBN/ISSN/EAN :	978-1-118-90634-7
Note générale :	Stereoelectronic Effects illustrates the utility of stereoelectronic concepts using structure and reactivity of organic molecules An advanced textbook that provides an up-to-date overview of the field, starting from the fundamental principles Presents a large selection of modern examples of stereoelectronic effects in organic reactivity Shows practical applications of stereoelectronic effects in asymmetric catalysis, photochemical processes, bioorganic chemistry and biochemistry, inorganic and organometallic reactivity, supramolecular chemistry and materials science.
Langues :	Anglais (eng)
Catégories :	Matériaux
Tags :	STEREOCHEMISTRY  ELECTROCHEMISTRY  ELECTROMAGNETISM  ELECTRONIC STRUCTURE  ELECTRONIC-MATERIALS
Index. décimale :	B-G
Résumé :	Conjugation through continuously connected extended ?-arrays is well-known to provide long-range electronic communication. A number of extended hyperconjugation patterns have been shown to be effective as well. Long-range delocalization can follow a variety of patterns that combine conjugation and hyperconjugation and are mediated by through-bond (TB) and through-space (TS) interactions. Homoconjugation and homohyperconjugation are observed when a saturated center intervenes between donor and acceptor orbitals. Homoaromaticity is well-established in charged systems and can involve either a planar or a three-dimensional array of atoms. Cross-hyperconjugation results from the delocalization of ?-electrons into the pseudo-?* orbitals, acting effectively as a cross-conjugated system. Through-bond interactions can evolve into concerted fragmentation. Symmetry effects in cyclic systems can lead to enhancing or weakening of hyperconjugation and conjugation, leading to ?-aromatic or antiaromatic systems. Independent arrays of delocalizing interactions can exist in a molecule. For example, formation of a ?-aromatic system in the presence of an orthogonal aromatic ?-system leads to double aromaticity.
Note de contenu :	"* Introduction * Direct Effects of Orbital Overlap on Reactivity * Beyond Orbital Overlap: Additional Factors Important for Orbital Interactions. Classifying Delocalizing Interactions * Computational and Theoretical Approaches for Studies of Stereoelectronic Effects * General Stereoelectronic Trends – Donors, Acceptors, and Chameleons * Stereoelectronic Effects with Donor and Acceptor Separated by a Single Bond Bridge: The Broad Spectrum of Orbital Contributions to Conformational Analysis * Stereoelectronic Effects with Donor and Acceptor Separated by a Vinyl Bridge * Remote Stereoelectronic Effects * Transition State Stabilization with Stereoelectronic Effects: Stereoelectronic Control of Reaction Bottlenecks * Stereoelectronic Effects in Reaction Design * Stereoelectronic Effects in Action: The Many Doors Opened by Orbital Interactions * Probing Stereoelectronic Effects with Spectroscopic Methods."
Cote :	B-G051 (SdS)
Num_Inv :	3493
Localisation :	SdS

Stereoelectronic effects: a bridge between structure and reactivity [texte imprimé] / Alabugin, Igor V., Auteur . - Chichester : Wiley, 2016 . - viii, 381 p.
ISBN : 978-1-118-90634-7
Stereoelectronic Effects illustrates the utility of stereoelectronic concepts using structure and reactivity of organic molecules An advanced textbook that provides an up-to-date overview of the field, starting from the fundamental principles Presents a large selection of modern examples of stereoelectronic effects in organic reactivity Shows practical applications of stereoelectronic effects in asymmetric catalysis, photochemical processes, bioorganic chemistry and biochemistry, inorganic and organometallic reactivity, supramolecular chemistry and materials science.
Langues : Anglais (eng)

Catégories :	Matériaux
Tags :	STEREOCHEMISTRY  ELECTROCHEMISTRY  ELECTROMAGNETISM  ELECTRONIC STRUCTURE  ELECTRONIC-MATERIALS
Index. décimale :	B-G
Résumé :	Conjugation through continuously connected extended ?-arrays is well-known to provide long-range electronic communication. A number of extended hyperconjugation patterns have been shown to be effective as well. Long-range delocalization can follow a variety of patterns that combine conjugation and hyperconjugation and are mediated by through-bond (TB) and through-space (TS) interactions. Homoconjugation and homohyperconjugation are observed when a saturated center intervenes between donor and acceptor orbitals. Homoaromaticity is well-established in charged systems and can involve either a planar or a three-dimensional array of atoms. Cross-hyperconjugation results from the delocalization of ?-electrons into the pseudo-?* orbitals, acting effectively as a cross-conjugated system. Through-bond interactions can evolve into concerted fragmentation. Symmetry effects in cyclic systems can lead to enhancing or weakening of hyperconjugation and conjugation, leading to ?-aromatic or antiaromatic systems. Independent arrays of delocalizing interactions can exist in a molecule. For example, formation of a ?-aromatic system in the presence of an orthogonal aromatic ?-system leads to double aromaticity.
Note de contenu :	"* Introduction * Direct Effects of Orbital Overlap on Reactivity * Beyond Orbital Overlap: Additional Factors Important for Orbital Interactions. Classifying Delocalizing Interactions * Computational and Theoretical Approaches for Studies of Stereoelectronic Effects * General Stereoelectronic Trends – Donors, Acceptors, and Chameleons * Stereoelectronic Effects with Donor and Acceptor Separated by a Single Bond Bridge: The Broad Spectrum of Orbital Contributions to Conformational Analysis * Stereoelectronic Effects with Donor and Acceptor Separated by a Vinyl Bridge * Remote Stereoelectronic Effects * Transition State Stabilization with Stereoelectronic Effects: Stereoelectronic Control of Reaction Bottlenecks * Stereoelectronic Effects in Reaction Design * Stereoelectronic Effects in Action: The Many Doors Opened by Orbital Interactions * Probing Stereoelectronic Effects with Spectroscopic Methods."
Cote :	B-G051 (SdS)
Num_Inv :	3493
Localisation :	SdS