Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
THE EFFECT OF ALKYL-GROUPS ON CARBANION STABILITY .1. INTERACTION OF SMALL RINGS WITH ADJACENT CARBANION CENTERS
Date
1992-02-01
Author
BALCIOGLU, N
SEVIN, F
EVIN, O
Peynircioğlu, Nihad Bekir
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
143
views
0
downloads
Cite This
Relative kinetic acidity measurements have shown that the cyclobutyl group has the ability to stabilize an adjacent carbanion center similar to vinyl and cyclopropyl groups, although to a lesser extent. The results of semiempirical calculations (MNDO) covering all the mentioned substituents, including the isopropyl group correlate well with the experimentally determined relative kinetic acidities.
Subject Keywords
Carbanion Stability
,
Kinetic Acidity Measurement
,
Mndo Calculations
,
Quantum Mechanics
,
Small Ring Effects
,
Spectroscopy
,
Nuclear Magnetic Resonance
URI
https://hdl.handle.net/11511/56378
Journal
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS
DOI
https://doi.org/10.1002/bbpc.19920960206
Collections
Department of Chemistry, Article
Suggestions
OpenMETU
Core
The impact of [1,2,5]chalcogenazolo[3,4,f]-benzo[1,2,3]triazole structure on the optoelectronic properties of conjugated polymers.
Aydan Alkan, Ece; Toppare, Levent Kamil; Department of Chemistry (2020)
[1,2,5]Chalcogenazolo[3,4-f]benzo[1,2,3]triazole units are strong electron-acceptor moieties that narrow the band gap of resulting conjugated polymers due to the electron deficiency on both sides of their structure. In this study, the effect of acceptor strength on optoelectronic properties were aimed and investigated by incorporating these moieties into donor-acceptor type conjugated polymers. Central chalcogen atom of the chalcogenazole linkage differentiated as sulfur and selenium to compare their effect...
The enantioselective synthesis of 2-indolyl-1-nitro derivatives and BODIPY dyes in the presence of chiral bifunctional squaramide organocatalysts
Dündar, Esra; Tanyeli, Cihangir; Department of Chemistry (2022-8)
In our research group, chiral bifunctional squaramides with different basic units have been synthesized and evaluated in various asymmetric reactions. To test the catalytic activity of organocatalysts, Friedel-Crafts alkylation of indoles with nitroolefins was selected as a model reaction in the first part of the study. 19 different 2-indolyl-1-nitro derivatives were synthesized with up to >99% ee in the presence of sterically encumbered tert-butyl substituted squaramide/quinine. Besides, 2-adamantyl squara...
The electronic band structure of III (in, al, ga)-v (n, as, sb) compounds and ternary alloys
Mohammad, Rezek Mahmoud Salim; Katırcıoğlu, Şenay; Department of Physics (2005)
In this work, the electronic band structure of III (In, Al, Ga) - V (N, As, Sb) compounds and their ternary alloys have been investigated by density functional theory (DFT) within generalized gradient approximation (GGA) and empirical tight binding (ETB) calculations, respectively. The present DFT-GGA calculations have shown direct band gap structures in zinc-blende phase for InN, InAs, InSb, GaN, and GaAs. However, indirect band gap structures have been obtained for cubic AlN, AlSb and AlAs com- pounds; he...
The effect of para-cyclophane structure on cyclacenes
Türker, Burhan Lemi (2000-02-01)
Semiempirical molecular orbital treatment at the level of AMI type has been performed on the Huckel type cyclacenes having the normal and the skew type para-cyclophane moiety embedded into their structures. The cyclophane effect is found to be operative on the lower members by veiling the cryptoannulenic effect which is influential on the heats of formation values and the frontier molecular orbital energies of the higher members as well as the parent cyclacenes.
The effect of peripheral circuits on the total pi-electron energies of cyclacenes
Türker, Burhan Lemi (2000-01-01)
Within the framework of the Huckel molecular orbital theory, certain linear models are developed to express the contribution of peripheral circuits of cyclacenes into their total pi -electron energies, which explain why cyclacenes exhibit the cryptoannulenic behavior as their peripheral circuits which are annulenic in character.
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
N. BALCIOGLU, F. SEVIN, O. EVIN, and N. B. Peynircioğlu, “THE EFFECT OF ALKYL-GROUPS ON CARBANION STABILITY .1. INTERACTION OF SMALL RINGS WITH ADJACENT CARBANION CENTERS,”
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS
, pp. 139–142, 1992, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56378.