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Donor–acceptor molecular compounds (essentially localized interactions)

Frank H. Herbstein

in Crystalline Molecular Complexes and Compounds: Structures and Principles

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198526605
eISBN:
9780191712142
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198526605.003.0011
Subject:
Physics, Crystallography

This chapter discusses components that are linked mainly by localized interactions. There is a variety of donor and acceptor types ranging from n-Donors and σ*-Acceptors, through n-Donors and ... More


Suboxic respiration in the oceanic water column

Louis A. Codispoti, Tadashi Yoshinari, and Allan H. Devol

in Respiration in Aquatic Ecosystems

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198527084
eISBN:
9780191713347
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198527084.003.0012
Subject:
Biology, Aquatic Biology

Upon oxygen depletion, a suite of alternate oxidants supports microbial respiration and inhibits the onset of sulfate (SO4 2) reduction. Waters in this intermediate state are ... More


Ecophysiology of microbial respiration

Gary M. King

in Respiration in Aquatic Ecosystems

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198527084
eISBN:
9780191713347
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198527084.003.0002
Subject:
Biology, Aquatic Biology

This chapter summarizes the physiology of bacterial respiration with an emphasis on topics relevant for understanding processes at a cellular level, as well as for understanding the larger-scale ... More


Structure and bonding in simple compounds of the Group 17 elements

Arne Haaland

in Molecules and Models: The molecular structures of main group element compounds

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199235353
eISBN:
9780191715594
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199235353.003.0018
Subject:
Physics, Condensed Matter Physics / Materials

This chapter opens with a brief description of the hydrogen, methyl, and chloro derivatives of the monovalent halogens. This is followed by a description of compounds of hypervalent Cl, Br, and I. ... More


DIPOLAR SYSTEMS AND DONOR–ACCEPTOR PAIRS

A.M. Stoneham

in Theory of Defects in Solids: Electronic Structure of Defects in Insulators and Semiconductors

Published in print:
2001
Published Online:
September 2007
ISBN:
9780198507802
eISBN:
9780191709920
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198507802.003.0025
Subject:
Physics, Condensed Matter Physics / Materials

This chapter focuses on donor-acceptor pairs, since the recombination of an electron on a donor with a hole associated with an acceptor can be a very effective combination for light-emitting diodes. ... More


BOUND EXCITONS

A.M. Stoneham

in Theory of Defects in Solids: Electronic Structure of Defects in Insulators and Semiconductors

Published in print:
2001
Published Online:
September 2007
ISBN:
9780198507802
eISBN:
9780191709920
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198507802.003.0026
Subject:
Physics, Condensed Matter Physics / Materials

In an exciton, there is a correlated motion of an electron and a hole. If the exciton encounters a defect, it may be trapped, retaining some of its exciton character. The behaviour of this complex ... More


5 Channels of radiative recombination in semiconductors

Ivan Pelant and Jan Valenta

in Luminescence Spectroscopy of Semiconductors

Published in print:
2012
Published Online:
May 2012
ISBN:
9780199588336
eISBN:
9780191738548
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199588336.003.0005
Subject:
Physics, Atomic, Laser, and Optical Physics

Channels of radiative recombination in bulk crystalline semiconductors: a short overview is at first given, then the following processes and their microscopic origin are analyzed: recombination of ... More


Charge transfer molecular compounds with delocalized π-π* interaction - introduction and general survey

Frank H. Herbstein

in Crystalline Molecular Complexes and Compounds: Structures and Principles

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198526605
eISBN:
9780191712142
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198526605.003.0013
Subject:
Physics, Crystallography

About one hundred years elapsed between the preparation of the first crystalline charge transfer molecular compound with delocalized π-π* interaction (anthracene...picric acid) and the development of ... More


Layered molecules with intra-molecular donor–acceptor interactions

Frank H. Herbstein

in Crystalline Molecular Complexes and Compounds: Structures and Principles

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198526605
eISBN:
9780191712142
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198526605.003.0014
Subject:
Physics, Crystallography

Layered molecules are donor-acceptor cyclophanes in which the mutual orientation and/or location of the donor and acceptor ring systems can be altered to investigate the conditions for maximum ... More


Crystal chemistry of mixed-stack π–π* molecular compounds

Frank H. Herbstein

in Crystalline Molecular Complexes and Compounds: Structures and Principles

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198526605
eISBN:
9780191712142
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198526605.003.0015
Subject:
Physics, Crystallography

The room-temperature crystal structures of many mixed stack charge transfer molecular compounds can be grouped into a relatively small number of crystallochemical families. Although the mixed stack ... More


Segregated stack π-molecular complexes

Frank H. Herbstein

in Crystalline Molecular Complexes and Compounds: Structures and Principles

Published in print:
2005
Published Online:
September 2007
ISBN:
9780198526605
eISBN:
9780191712142
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198526605.003.0017
Subject:
Physics, Crystallography

The phenomenon of high electrical conductivity in some organic crystals appears to be associated with stacked arrangements of radical ions of electron donors and/or acceptors. A variety of chemical ... More


Other weak and non-conventional hydrogen bonds

GAUTAM R. DESIRAJU and THOMAS STEINER

in The Weak Hydrogen Bond: In Structural Chemistry and Biology

Published in print:
2001
Published Online:
January 2010
ISBN:
9780198509707
eISBN:
9780191708206
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198509707.003.0003
Subject:
Physics, Crystallography

The C-H···O hydrogen bond is considered the archetypical weak hydrogen bond. Donors and acceptors in weak and non-conventional hydrogen bonds encompass wide ranges of acidity and basicity and of ... More


Introduction

Brian G. Cox

in Acids and Bases: Solvent Effects on Acid-Base Strength

Published in print:
2013
Published Online:
May 2013
ISBN:
9780199670512
eISBN:
9780199670512
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199670512.003.0001
Subject:
Physics, Condensed Matter Physics / Materials

Non-aqueous solvents typically lack water’s ability to solvate effectively both anions and cations, and consequently have acidity scales that differ considerably from those in water. These ... More


Hydrogen Bonds

I. David Brown

in The Chemical Bond in Inorganic Chemistry

Published in print:
2016
Published Online:
November 2016
ISBN:
9780198742951
eISBN:
9780191802935
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198742951.003.0005
Subject:
Physics, Crystallography, Condensed Matter Physics / Materials

The hydrogen atom has unusual but important properties (Sections 5.6–5.7) that are central to much of chemistry. The asymmetry of the hydrogen bond arises from the repulsion between the donor and ... More


Semiconductors

Ian R. Kenyon

in Quantum 20/20: Fundamentals, Entanglement, Gauge Fields, Condensates and Topology

Published in print:
2019
Published Online:
November 2019
ISBN:
9780198808350
eISBN:
9780191846052
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/oso/9780198808350.003.0006
Subject:
Physics, Theoretical, Computational, and Statistical Physics, Particle Physics / Astrophysics / Cosmology

Semiconductors are introduced. Hole kinematics are deduced. Effects of doping giving donor and acceptor levels are surveyed: silicon and AlxGa1−xAs are used as exemplars. Diode function is ... More


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