Ivar Koppel: search on Z-Library

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1

Emptying of Large-Scale Pipeline by Pressurized Air

Laanearu, Janek, Annus, Ivar, Koppel, Tiit, Bergant, Anton, Vučković, Sašo, Hou, Qingzhi, Tijsseling, Arris S., Anderson, Alexander, van’t Westende, Jos M. C.

Journal:

Journal of Hydraulic Engineering

Year:

2012

Language:

english

File:

PDF, 1.24 MB

english, 2012

2

Development of Accelerating Pipe Flow Starting From Rest

Annus, Ivar, Koppel, Tiit, Sarv, Laur, Ainola, Leo

Journal:

Journal of Fluids Engineering

Year:

2013

Language:

english

File:

PDF, 827 KB

english, 2013

3

Experimental Investigation on Rapid Filling of a Large-Scale Pipeline

Hou, Qingzhi, Tijsseling, Arris S., Laanearu, Janek, Annus, Ivar, Koppel, Tiit, Bergant, Anton, Vučković, Sašo, Anderson, Alexander, van ’t Westende, Jos M. C.

Journal:

Journal of Hydraulic Engineering

Year:

2014

Language:

english

File:

PDF, 6.78 MB

english, 2014

4

Basicity Limits of Neutral Organic Superbases

Leito, Ivo, Koppel, Ilmar A., Koppel, Ivar, Kaupmees, Karl, Tshepelevitsh, Sofja, Saame, Jaan

Journal:

Angewandte Chemie International Edition

Year:

2015

Language:

english

File:

PDF, 1.27 MB

english, 2015

5

Superacidity of neutral Brönsted acids in gas phase

Peeter Burk, Ilmar A. Koppel, Ivar Koppel, Lev M. Yagupolskii, Robert W. Taft

Journal:

Journal of Computational Chemistry

Year:

1996

Language:

english

File:

PDF, 816 KB

english, 1996

6

Revision of the Gas-Phase Acidity Scale below 300 kcal mol −1

Leito, Ivo, Raamat, Elin, Kütt, Agnes, Saame, Jaan, Kipper, Karin, Koppel, Ilmar A., Koppel, Ivar, Zhang, Min, Mishima, Masaaki, Yagupolskii, Lev M., Garlyauskayte, Romute Yu., Filatov, Andrey A.

Journal:

Journal of Physical Chemistry A

Year:

2009

Language:

english

File:

PDF, 182 KB

english, 2009

7

The enormous acidifying effect of the supersubstituent NSO2CF3 on the acidity of derivatives of benzenesulfonamide and toluene-p-sulfonamide in the gas phase and in dimethyl sulfoxide

Koppel, Ilmar A., Koppel, Juta, Leito, Ivo, Koppel, Ivar, Mishima, Masaaki, Yagupolskii, Lev M.

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

2001

Language:

english

File:

PDF, 115 KB

english, 2001

8

Gas-Phase Acidities of Some Neutral Brønsted Superacids: A DFT and ab Initio Study

Koppel, Ilmar A., Burk, Peeter, Koppel, Ivar, Leito, Ivo, Sonoda, Takaaki, Mishima, Masaaki

Journal:

Journal of the American Chemical Society

Year:

2000

Language:

english

File:

PDF, 197 KB

english, 2000

9

Acute Poisoning With Bromofosmethyl (Bromophos)

Köppel, Claus, Thomsen, Torben, Heinemeyer, Gerhard, Roots, Ivar

Journal:

Clinical Toxicology (Informa Healthcare)

Year:

1991

Language:

english

File:

PDF, 227 KB

english, 1991

10

Stereoelectronic, Strain, and Medium Effects on the Protonation of Cubylamine, a Janus-like Base

José-Luis M. Abboud, Ilmar A. Koppel, Ibon Alkorta, Ernest W. Della, Paul Müller, Juan Z. Dávalos, Peeter Burk, Ivar Koppel, Viljar Pihl, Esther Quintanilla

Journal:

Angewandte Chemie

Year:

2003

Language:

english

File:

PDF, 117 KB

english, 2003

11

Generalized Principle of Designing Neutral Superstrong Brønsted Acids

Koppel, Ilmar A., Burk, Peeter, Koppel, Ivar, Leito, Ivo

Journal:

Journal of the American Chemical Society

Year:

2002

Language:

english

File:

PDF, 97 KB

english, 2002

12

The Thermodynamic Stability of Adamantylideneadamantane and Its Proton- and Electron-Exchanges. Comparison with Simple Alkenes

Abboud, José-Luis M., Alkorta, Ibon, Dávalos, Juan Z., Koppel, Ilmar A., Koppel, Ivar, Lenoir, Dieter, Martínez, Sonia, Mishima, Masaaki

Journal:

Bulletin of the Chemical Society of Japan

Year:

2016

Language:

english

File:

PDF, 1.77 MB

english, 2016

13

Polytrifluoromethylation versus Polyfluorination of the Isomers of Kekulé Benzene and Phenol: A Theoretical Study

Lipping, Lauri, Koppel, Ivar, Koppel, Ilmar A., Kolomeitsev, Alexander, Röschenthaler, Gerd-Volker, Leito, Ivo

Journal:

Journal of Organic Chemistry

Year:

2010

Language:

english

File:

PDF, 1.04 MB

english, 2010

14

Hydrogen-Bonding Interactions of (CF 3 ) 3 CH and (CF 3 ) 3 C − in the Gas Phase. An Experimental (FT-ICR) and Computational Study

Guerrero, Andrés, Herrero, Rebeca, Dávalos, Juan Z., Koppel, Ivar, Abboud, José-Luis M., Chana, Antonio, Koppel, Ilmar A.

Journal:

Journal of Physical Chemistry A

Year:

2009

Language:

english

File:

PDF, 923 KB

english, 2009

15

Experimental Gas-Phase Basicity Scale of Superbasic Phosphazenes

Kaljurand, Ivari, Koppel, Ilmar A., Kütt, Agnes, Rõõm, Eva-Ingrid, Rodima, Toomas, Koppel, Ivar, Mishima, Masaaki, Leito, Ivo

Journal:

Journal of Physical Chemistry A

Year:

2007

Language:

english

File:

PDF, 125 KB

english, 2007

16

Gas-Phase Brønsted Superacidity of Some Derivatives of Monocarba- closo -Borates: a Computational Study

Lipping, Lauri, Leito, Ivo, Koppel, Ivar, Koppel, Ilmar A.

Journal:

Journal of Physical Chemistry A

Year:

2009

Language:

english

File:

PDF, 294 KB

english, 2009

17

Acidity of benzoylcarbamates in dimethyl sulfoxide. Confirmation of mixed N/O alkylation in the Mitsunobu reaction

Koppel, Ilmar, Koppel, Juta, Koppel, Ivar, Leito, Ivo, Pihl, Viljar, Wallin, Annelie, Grehn, Leif, Ragnarsson, Ulf

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1993

Language:

english

File:

PDF, 463 KB

english, 1993

18

Experimental Basicities of Phosphazene, Guanidinophosphazene, and Proton Sponge Superbases in the Gas Phase and Solution

Kaljurand, Ivari, Saame, Jaan, Rodima, Toomas, Koppel, Ivar, Koppel, Ilmar A., Kögel, Julius F., Sundermeyer, Jörg, Köhn, Uwe, Coles, Martyn P., Leito, Ivo

Journal:

Journal of Physical Chemistry A

Year:

2016

Language:

english

File:

PDF, 1.88 MB

english, 2016

19

Solution and Gas-Phase Acidities of all-trans ( all-E ) Retinoic Acid: An Experimental and Computational Study

Abboud, José-Luis M., Koppel, Ilmar A., Uggerud, Einar, Leito, Ivo, Koppel, Ivar, Sekiguchi, Osamu, Kaupmees, Karl, Saame, Jaan, Kütt, Karl, Mishima, Masaaki

Journal:

Chemistry - A European Journal

Year:

2015

Language:

english

File:

PDF, 492 KB

english, 2015

20

Revised and Expanded Scale of Gas-Phase Lithium Cation Basicities. An Experimental and Theoretical Study

Burk, Peeter, Koppel, Ilmar A., Koppel, Ivar, Kurg, Riho, Gal, Jean-Francois, Maria, Pierre-Charles, Herreros, Marta, Notario, Rafael, Abboud, Jose-Luis M., Anvia, Frederick, Taft, Robert W.

Journal:

Journal of Physical Chemistry A

Year:

2000

Language:

english

File:

PDF, 138 KB

english, 2000

21

Boratabenzene Anions C5B(CN)6− and C5B(CF3)6− and the Superacidic Properties of their Conjugate Acids

Agnes Kütt, Ivar Koppel, Ilmar A. Koppel, Ivo Leito

Journal:

Year:

2009

Language:

english

File:

PDF, 174 KB

english, 2009

22

The enormous apparent gas-phase acidity of cubylamine

José-Luis M. Abboud, Ibon Alkorta, Peeter Burk, Juan Z. Dávalos, Esther Quintanilla, Ernest W. Della, Ilmar A. Koppel, Ivar Koppel

Journal:

Chemical Physics Letters

Year:

2004

Language:

english

File:

PDF, 273 KB

english, 2004

23

Acidities of strong neutral Brønsted acids in different media

Elin Raamat, Karl Kaupmees, Gea Ovsjannikov, Aleksander Trummal, Agnes Kütt, Jaan Saame, Ivar Koppel, Ivari Kaljurand, Lauri Lipping, Toomas Rodima, Viljar Pihl, Ilmar A. Koppel, Ivo Leito

Journal:

Journal of Physical Organic Chemistry

Year:

2012

Language:

english

File:

PDF, 532 KB

english, 2012

24

A New Class of Organosuperbases, N-Alkyl- and N-Aryl-1,3-dialkyl-4,5-dimethylimidazol-2-ylidene Amines: Synthesis, Structure, pKBH+ Measurements, and Properties

Roman A. Kunetskiy, Dr. Svetlana M. Polyakova, Jiří Vavřík, Dr. Ivana Císařová, Jaan Saame, Eva Roos Nerut, Dr. Ivar Koppel, Prof. Ilmar A. Koppel, Dr. Agnes Kütt, Prof. Ivo Leito, Dr. Ilya M. Lyapkal

Journal:

Chemistry - A European Journal

Year:

2012

Language:

english

File:

PDF, 470 KB

english, 2012

25

Relativistic effects on acidities and basicities of Brønsted acids and bases containing gold

Koppel, Ilmar A., Burk, Peeter, Kasemets, Kalev, Koppel, Ivar

Journal:

Physical Chemistry Chemical Physics

Year:

2013

Language:

english

File:

PDF, 1.09 MB

english, 2013

26

Protonation of Cubane in the Gas Phase: A High-Level Ab Initio and DFT Study

José-Luis M. Abboud, Ilmar A. Koppel, Juan Z. Dávalos, Peeter Burk, Ivar Koppel, Esther Quintanilla

Journal:

Angewandte Chemie

Year:

2003

Language:

english

File:

PDF, 92 KB

english, 2003

27

Guanidinophosphazenes: Design, Synthesis, and Basicity in THF and in the Gas Phase

Kolomeitsev, Alexander A., Koppel, Ilmar A., Rodima, Toomas, Barten, Jan, Lork, Enno, Röschenthaler, Gerd-Volker, Kaljurand, Ivari, Kütt, Agnes, Koppel, Ivar, Mäemets, Vahur, Leito, Ivo

Journal:

Journal of the American Chemical Society

Year:

2005

Language:

english

File:

PDF, 264 KB

english, 2005

28

Pentakis(trifluoromethyl)phenyl, a Sterically Crowded and Electron-withdrawing Group: Synthesis and Acidity of Pentakis(trifluoromethyl)benzene, -toluene, -phenol, and -aniline

Kütt, Agnes, Movchun, Valeria, Rodima, Toomas, Dansauer, Timo, Rusanov, Eduard B., Leito, Ivo, Kaljurand, Ivari, Koppel, Juta, Pihl, Viljar, Koppel, Ivar, Ovsjannikov, Gea, Toom, Lauri, Mishima, Masaa

Journal:

Journal of Organic Chemistry

Year:

2008

Language:

english

File:

PDF, 291 KB

english, 2008

29

Additivity of substituent effects on the acidity of alcohols

Abboud, José-Luis M., Koppel, Ilmar A., Koppel, Ivar

Journal:

Journal of Physical Organic Chemistry

Year:

2013

Language:

english

File:

PDF, 422 KB

english, 2013

30

Development of radial velocity component in accelerating start-up pipe flow

Annus, Ivar, Koppel, Tiit

Journal:

European Journal of Mechanics - B/Fluids

Year:

2015

Language:

english

File:

PDF, 1.47 MB

english, 2015

31

Influence of substituents on the infrared stretching frequencies of carbonyl group in esters of benzoic acid

Vilve Nummert, Oksana Travnikova, Signe Vahur, Ivo Leito, Mare Piirsalu, Vahur Mäemets, Ivar Koppel, Ilmar A. Koppel

Journal:

Journal of Physical Organic Chemistry

Year:

2006

Language:

english

File:

PDF, 187 KB

english, 2006

32

Divergent Access to Histone Deacetylase Inhibitory Cyclopeptides via a Late-Stage Cyclopropane Ring Cleavage Strategy. Short Synthesis of Chlamydocin

Elek, Gábor Zoltán, Koppel, Kaur, Zubrytski, Dzmitry M., Konrad, Nele, Järving, Ivar, Lopp, Margus, Kananovich, Dzmitry G.

Journal:

Organic Letters

Year:

2019

Language:

english

File:

PDF, 1011 KB

english, 2019

33

Stereoelectronic, Strain, and Medium Effects on the Protonation of Cubylamine, a Janus-like Base

José-Luis M. Abboud, Ilmar A. Koppel, Ibon Alkorta, Ernest W. Della, Paul Müller, Juan Z. Dávalos, Peeter Burk, Ivar Koppel, Viljar Pihl, Esther Quintanilla

Journal:

Angewandte Chemie International Edition

Year:

2003

Language:

english

File:

PDF, 118 KB

english, 2003

34

Superacidity of closo -Dodecaborate-Based Brønsted Acids: a DFT Study

Lipping, Lauri, Leito, Ivo, Koppel, Ivar, Krossing, Ingo, Himmel, Daniel, Koppel, Ilmar A.

Journal:

Journal of Physical Chemistry A

Year:

2015

Language:

english

File:

PDF, 2.42 MB

english, 2015

35

Protonation of Cubane in the Gas Phase: A High-Level Ab Initio and DFT Study

José-Luis M. Abboud, Ilmar A. Koppel, Juan Z. Dávalos, Peeter Burk, Ivar Koppel, Esther Quintanilla

Journal:

Angewandte Chemie International Edition

Year:

2003

Language:

english

File:

PDF, 92 KB

english, 2003

36

Quantitative description of acidity of XOH compounds in the gas phase and dimethyl sulphoxide with use of HOMO energies of XO− anions

Vladislav M. Vlasov, Ilmar A. Koppel, Peeter Burk, Ivar Koppel

Journal:

Journal of Physical Organic Chemistry

Year:

1995

Language:

english

File:

PDF, 448 KB

english, 1995

37

The basicity of substituted N,N-dimethylanilines in solution and in the gas phase

Ivari Kaljurand, Roman Lilleorg, Algis Murumaa, Masaaki Mishima, Peeter Burk, Ivar Koppel, Ilmar A. Koppel, Ivo Leito

Journal:

Journal of Physical Organic Chemistry

Year:

2012

Language:

english

File:

PDF, 538 KB

english, 2012

38

Transition to Turbulence in Accelerating Pipe Flow

Annus, Ivar, Koppel, Tiit

Journal:

Journal of Fluids Engineering

Year:

2011

Language:

english

File:

PDF, 1.38 MB

english, 2011

39

Calculations of p K a of Superacids in 1,2-Dichloroethane

Trummal, Aleksander, Rummel, Alar, Lippmaa, Endel, Koppel, Ivar, Koppel, Ilmar A.

Journal:

Journal of Physical Chemistry A

Year:

2011

Language:

english

File:

PDF, 757 KB

english, 2011

40

Basicity of Guanidines with Heteroalkyl Side Chains in Acetonitrile

Mirjana Eckert-Maksić, Zoran Glasovac, Pavle Trošelj, Agnes Kütt, Toomas Rodima, Ivar Koppel, Ilmar A. Koppel

Journal:

European Journal of Organic Chemistry

Year:

2008

Language:

english

File:

PDF, 330 KB

english, 2008

41

Brønsted Basicities of Diamines in the Gas Phase, Acetonitrile, and Tetrahydrofuran

Eva-Ingrid Rõõm, Agnes Kütt, Ivari Kaljurand, Ivar Koppel, Ivo Leito, Ilmar A. Koppel, Masaaki Mishima, Kenta Goto, Yuji Miyahara

Journal:

Chemistry - A European Journal

Year:

2007

Language:

english

File:

PDF, 357 KB

english, 2007

42

Feasibility of the spontaneous gas-phase proton transfer equilibria between neutral Brønsted acids and Brønsted bases

Peeter Burk, Ivar Koppel, Aleksander Trummal, Ilmar A. Koppel

Journal:

Journal of Physical Organic Chemistry

Year:

2008

Language:

english

File:

PDF, 147 KB

english, 2008

43

[American Society of Civil Engineers 12th Annual Conference on Water Distribution Systems Analysis (WDSA) - Tucson, Arizona, United States (September 12-15, 2010)] Water Distribution Systems Analysis 2010 - Using Transient Flow Equations for Modelling of Filling and Emptying of Large-Scale Pipeline

Koppel, Tiit, Laanearu, Janek, Annus, Ivar, Raidmaa, Meelis

Year:

2011

Language:

english

File:

PDF, 418 KB

english, 2011

44

Solute-solvent and solvent-solvent interactions in binary solvent mixtures. 2. Effect of temperature on the ET(30) polarity parameter of dipolar hydrogen bond acceptor-hydrogen bond donor mixtures

Elisabeth Bosch, Martí Rosés, Koit Herodes, Ilmar Koppel, Ivo Leito, Ivar Koppel, Veiko Taal

Journal:

Journal of Physical Organic Chemistry

Year:

1996

Language:

english

File:

PDF, 560 KB

english, 1996

45

Acidity of Anilines: Calculations vs Experiment

Lipping, Lauri, Kütt, Agnes, Kaupmees, Karl, Koppel, Ivar, Burk, Peeter, Leito, Ivo, Koppel, Ilmar A.

Journal:

Journal of Physical Chemistry A

Year:

2011

Language:

english

File:

PDF, 1.08 MB

english, 2011

46

Basicity Limits of Neutral Organic Superbases

Leito, Ivo, Koppel, Ilmar A., Koppel, Ivar, Kaupmees, Karl, Tshepelevitsh, Sofja, Saame, Jaan

Journal:

Angewandte Chemie

Year:

2015

Language:

english

File:

PDF, 1.26 MB

english, 2015

47

Critical test of performance of B3LYP functional for prediction of gas-phase acidities and basicities

Peeter Burk, Ilmar A. Koppel, Ivar Koppel, Ivo Leito, Oksana Travnikova

Journal:

Chemical Physics Letters

Year:

2000

Language:

english

File:

PDF, 79 KB

english, 2000

48

Critical test of PM3-calculated proton affinities

Peeter Burk, Koit Herodes, Ivar Koppel, Ilmar Koppel

Journal:

International Journal of Quantum Chemistry

Year:

1993

Language:

english

File:

PDF, 393 KB

english, 1993

49

Intrinsic Basicities of Phosphorus Imines and Ylides: A Theoretical Study

Koppel, Ilmar A., Schwesinger, Reinhard, Breuer, Thomas, Burk, Peeter, Herodes, Koit, Koppel, Ivar, Leito, Ivo, Mishima, Masaaki

Journal:

Journal of Physical Chemistry A

Year:

2001

Language:

english

File:

PDF, 132 KB

english, 2001

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