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1

Nitro group effects on the 1J(CC) couplings in nitroalkanes

Michal Witanowski, Zenobia Biedrzycka, Karol Grela

Journal:

Magnetic Resonance in Chemistry

Year:

1998

Language:

english

File:

PDF, 184 KB

english, 1998

2

Nitrogen NMR shieldings of nitroalkanes as a structural and conformational probe

Michal Witanowski, Zenobia Biedrzycka, Karol Grela, Krystyna Wejroch

Journal:

Magnetic Resonance in Chemistry

Year:

1998

Language:

english

File:

PDF, 259 KB

english, 1998

3

Study of hydrogen bonding and solvent polarity effects on the nitrogen NMR shieldings of N,N-dimethylacetamidine

Michal Witanowski, Wanda Sicinska, Zenobia Biedrzycka, Graham A. Webb

Journal:

Magnetic Resonance in Chemistry

Year:

2000

Language:

english

File:

PDF, 148 KB

english, 2000

4

Solvent effects on the nitrogen NMR shieldings of 3-methylsydnone and ab initio calculations of the shieldings including related oxazole and oxadiazole systems

Michal Witanowski, Zenobia Biedrzycka, Zbigniew Grabowski

Journal:

Magnetic Resonance in Chemistry

Year:

2000

Language:

english

File:

PDF, 99 KB

english, 2000

5

15N NMR investigation of the tautomeric equilibria of some 1,2,4-triazoles and related compounds

Elzbieta Bojarska-Olejnik, Lech Stefaniak, Michal Witanowski, Graham A. Webb

Journal:

Magnetic Resonance in Chemistry

Year:

1986

Language:

english

File:

PDF, 489 KB

english, 1986

6

Solvent-induced variations in nitrogen NMR shieldings of tert-butyl isocyanide as a probe for solvent polarizability–polarity

Michal Witanowski, Wanda Sicinska, Graham A. Webb

Journal:

Magnetic Resonance in Chemistry

Year:

1992

Language:

english

File:

PDF, 356 KB

english, 1992

7

Solvent versus substituent effects on the nitrogen NMR shielding of the nitro-group in substituted benzenes

Michal Witanowski, Wanda Sicinska, Zenobia Biedrzycka, Graham A. Webb

Journal:

Magnetic Resonance in Chemistry

Year:

1993

Language:

english

File:

PDF, 359 KB

english, 1993

8

Spin—spin couplings between 13C nuclei in five-membered heteroaromatic ring systems

Michal Witanowski, Zenobia Biedrzycka

Journal:

Magnetic Resonance in Chemistry

Year:

1994

Language:

english

File:

PDF, 421 KB

english, 1994

9

Nitrogen NMR assessment of interactions between nitroso, cyano and acetyl groups across aliphatic systems

Michal Witanowski, Zenobia Biedrzycka, Leszek Konopski, Karol Grela

Journal:

Magnetic Resonance in Chemistry

Year:

1995

Language:

english

File:

PDF, 490 KB

english, 1995

10

Verification of the limits of use of various spectroscopic parameters in the conformational analysis of some conjugated enamides

Jacek Wójcik, Lech Stefaniak, Michał Witanowski, Graham A. Webb

Journal:

Journal of Molecular Structure

Year:

1986

Language:

english

File:

PDF, 205 KB

english, 1986

11

A study of solvent polarity and hydrogen bonding effects on the nitrogen NMR shieldings of N-nitramines and ab initio calculations of the nitrogen shieldings of C-nitro, N-nitro and O-nitro systems

Michal Witanowski, Zenobia Biedrzycka, Wanda Sicinska, Zbigniew Grabowski

Journal:

Journal of Molecular Structure

Year:

2002

Language:

english

File:

PDF, 114 KB

english, 2002

12

Hydrogen-bond and solvent polarity effects on the nitrogen NMR shielding of urea systems

Michal Witanowski, Wanda Sicinska, Zenobia Biedrzycka, Graham A. Webb

Journal:

Journal of Molecular Structure

Year:

1999

Language:

english

File:

PDF, 110 KB

english, 1999

13

Solvent polarity and hydrogen-bonding effects on the nitrogen NMR shieldings of N-nitrosamines and DFT calculations of the shieldings of C-, N-, and O-nitroso systems

Michal Witanowski, Zenobia Biedrzycka, Wanda Sicinska, Zbigniew Grabowski

Journal:

Journal of Magnetic Resonance

Year:

2003

Language:

english

File:

PDF, 154 KB

english, 2003

14

Indirect carbon–carbon spin–spin couplings across one, two and three bonds in pyridine and diazine systems: experiment and theory

Michal Witanowski, Krystyna Kamieńska-Trela, Zenobia Biedrzycka, Magdalena Bechcicka

Journal:

Journal of Physical Organic Chemistry

Year:

2008

Language:

english

File:

PDF, 345 KB

english, 2008

15

Origin of significant solvent effects on 1J(CC) spin–spin coupling in some acetylenes: hydrogen bonding and solvent polarity

Zenobia Biedrzycka, Krystyna Kamieńska-Trela, Michał Witanowski

Journal:

Journal of Physical Organic Chemistry

Year:

2010

Language:

english

File:

PDF, 123 KB

english, 2010

16

Substituent effects on indirect carbon–carbon couplings, J(CC), in substituted thiophenes, pyrroles, and furans studied by experiment and theory

Krystyna Kamieńska-Trela, Elena Dvornikova, Zenobia Biedrzycka, Michał Witanowski

Journal:

Journal of Physical Organic Chemistry

Year:

2012

Language:

english

File:

PDF, 548 KB

english, 2012

17

Nitrogen-14 nuclear magnetic resonance. VI. Trigonally hybridized nitrogen atoms

Witanowski, Michal.

Journal:

Journal of the American Chemical Society

Year:

1968

Language:

english

File:

PDF, 735 KB

english, 1968

18

Proton Magnetic Resonance Spectroscopy. Configurational Stability of Neohexyl(3,3-dimethylbutyl) Organometallic Compounds 1

Witanowski, Michal, Roberts, John D.

Journal:

Journal of the American Chemical Society

Year:

1966

Language:

english

File:

PDF, 532 KB

english, 1966

19

Solvent effects on nitrogen NMR shieldings in thiazole and thiadiazole systems

Witanowski, Michal, Sicinska, Wanda, Biedrzycka, Zenobia, Grabowski, Zbigniew, Webb, Graham A.

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1996

Language:

english

File:

PDF, 601 KB

english, 1996

20

Chemistry of furazan derivatives. II. Reaction of dibenzoylfuroxans with diazomethane

Daniewski, Andrzej R., Witanowski, Michal, Urbanski, Tadeusz

Journal:

Journal of Organic Chemistry

Year:

1967

Language:

english

File:

PDF, 427 KB

english, 1967

21

Magnetic Resonance Spectroscopy. The Configurational Stability of Primary Grignard Reagents. 3,3-Dimethylbutylmagnesium Chloride 1

Whitesides, George M., Witanowski, Michal, Roberts, John D.

Journal:

Journal of the American Chemical Society

Year:

1965

Language:

english

File:

PDF, 1.04 MB

english, 1965

22

A Study of the Nitrogen NMR Spectra of Azoles and their Solvent Dependence

Jaszuński, Michał, Mikkelsen, Kurt V., Rizzo, Antonio, Witanowski, Michał

Journal:

Journal of Physical Chemistry A

Year:

2000

Language:

english

File:

PDF, 68 KB

english, 2000

23

Kinetic studies of the reaction of some nitrosoalkanes with nitrogen dioxide

Gowenlock, Brian G., King, Boyd, Pfab, Josef, Witanowski, Michal

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1998

Language:

english

File:

PDF, 94 KB

english, 1998

24

Solvent induced variations in nitrogen NMR shieldings of some oxime systems as a test of the Solvaton model of non-specific molecular interactions

Witanowski, Michal, Biedrzycka, Zenobia, Sicinska, Wanda, Webb, Graham A.

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1997

Language:

english

File:

PDF, 345 KB

english, 1997

25

A 15 N NMR Study of the Tautomeric Equilibria of Some 5-Substituted Tetrazoles

Bojarska-Olejnik, Elzbieta, Stefaniak, Lech, Witanowski, Michal, Webb, Graham A.

Journal:

Bulletin of the Chemical Society of Japan

Year:

1986

File:

PDF, 301 KB

1986

26

ChemInform Abstract: BENZOPHENONE, DIPOLMOMENTE UND HAMMETT-SIGMA-KONSTANTEN

JANUSZEWSKI, HENRYK, STEFANIAK, LECH, URBANSKI, TADEUSZ, WITANOWSKI, MICHAL

Journal:

Chemischer Informationsdienst. Organische Chemie

Year:

1971

File:

PDF, 129 KB

1971