Z. Dega-Szafran: search on Z-Library

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1

Diastereomeric complex of (R/S)-piperidine-3-carboxylic acid with (2R,3R)-tartaric acid: Structural, spectroscopic and computational studies

E. Bartoszak-Adamska, Z. Dega-Szafran, M. Jaskólski, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2011

Language:

english

File:

PDF, 819 KB

english, 2011

2

UV, 1H and 13C NMR spectra, and AM1 studies of protonation of aminopyridines

Zofia Dega-Szafran, Anna Kania, Barbara Nowak-Wydra, Miroslaw Szafran

Journal:

Journal of Molecular Structure

Year:

1994

Language:

english

File:

PDF, 590 KB

english, 1994

3

X-ray, NMR and DFT studies of the complex of 1,4-dimethylpiperazine mono-betaine with p-hydroxybenzoic acid

Z. Dega-Szafran, A. Katrusiak, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2006

Language:

english

File:

PDF, 276 KB

english, 2006

4

Systematics in NH + ···N-Bonded Monosalts of 4,4′-Bipyridine (44′biPy) with Mineral Acids

Ratajczak-Sitarz, Małgorzata, Katrusiak, Andrzej, Dega-Szafran, Zofia, Stefański, Grzegorz

Journal:

Crystal Growth & Design

Year:

2013

Language:

english

File:

PDF, 3.39 MB

english, 2013

5

Short and symmetrical OHO hydrogen bond in bis(quinuclidine betaine) hydrochloride

Z. Dega-Szafran, A. Katrusiak, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2010

Language:

english

File:

PDF, 577 KB

english, 2010

6

Structure of 6-hydroxy-1-methylquinolinium chloride hydrate studied by X-ray, DFT calculations, FTIR and NMR spectroscopes

P. Barczyński, A. Komasa, M. Ratajczak-Sitarz, A. Katrusiak, J. Koput, Z. Dega-Szafran, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2010

Language:

english

File:

PDF, 843 KB

english, 2010

7

Ion cyclotron resonance mass spectrometric study of ion—molecule reactions in toluene—pyridine mixtures

Alan R. Katritzky, Zofia Dega-Szafran, Ragulan Ramanathan, John R. Eyler

Journal:

Journal of Mass Spectrometry

Year:

1994

Language:

english

File:

PDF, 496 KB

english, 1994

8

Crystal structure and spectroscopic properties of N-methylmorpholine betaine phosphate

Z. Dega-Szafran, A. Gzella, Z. Kosturkiewicz, M. Szafran, A. Antkowiak

Journal:

Journal of Molecular Structure

Year:

2000

Language:

english

File:

PDF, 216 KB

english, 2000

9

Conformational analysis of 1-piperidineacetic acid by X-ray, FTIR and ab initio calculations

Z. Dega-Szafran, Z. Kosturkiewicz, E. Nowak, M. Petryna, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2002

Language:

english

File:

PDF, 283 KB

english, 2002

10

Structure and FTIR spectra of 3 : 2 complexes of trimethylamine N-oxide and 4-dimethylamine-2,6-dimethylpyridine N-oxide with perchloric acid

Szymon Krzywda, Mariusz Jaskólski, Maria Gdaniec, Zofia Dega-Szafran, Monika Grundwald-Wyspiańska, Mirosław Szafran, Zbigniew Dauter, Gideon Davies

Journal:

Journal of Molecular Structure

Year:

1996

Language:

english

File:

PDF, 625 KB

english, 1996

11

Structure and FTIR spectra of 3:2 complexes of trimethylamine N-oxide and 4-dimethylamine-2,6-dimethylpyridine N-oxide with perchloric acid

Szymon Krzywda, Mariusz Jaskólski, Maria Gdaniec, Zofia Dega-Szafran, Monika Grundwald-Wyspiańska, Mirosław Szafran, Zbigniew Dauter, Gideon Davies

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

1996

Language:

english

File:

PDF, 601 KB

english, 1996

12

Interaction of 2,6-dimethylpyridine with chloroacetic acid in some aprotic solvents: problem of stoichiometry

Z. Dega-Szafran, E. Dulewicz, M. Szafran

Journal:

Journal of Molecular Structure

Year:

1988

Language:

english

File:

PDF, 339 KB

english, 1988

13

Hydrogen bonding and molecular association in 2-(quinuclidinium)-butyric acid bromide hydrate studied by X-ray diffraction, DFT calculations, FTIR and NMR spectroscopy, and potentiometric titration

Z. Dega-Szafran, A. Katrusiak, M. Szafran, P. Barczyński

Journal:

Journal of Molecular Structure

Year:

2010

Language:

english

File:

PDF, 720 KB

english, 2010

14

B3LYP study of the conformers and rotamers of isostructural N-methylpiperidine betaine hydrochloride and (1-methylcyclohexyl)-acetic acid. The effect of electrostatic attraction on rotation barriers

M. Szafran, J. Koput, Z. Dega-Szafran

Journal:

Journal of Molecular Structure

Year:

2005

Language:

english

File:

PDF, 453 KB

english, 2005

15

The 1:2:1 adduct of DABCO dication, hydrogen squarate and water molecules studied by X-ray diffraction and FTIR spectroscopy

P. Barczyński, Z. Dega-Szafran, A. Katrusiak, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2011

Language:

english

File:

PDF, 708 KB

english, 2011

16

Crystal structure of di-(N-methylmorpholine betaine)-l(+)-tartrate

Z. Dega-Szafran, G. Dutkiewicz, Z. Kosturkiewicz, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2002

Language:

english

File:

PDF, 196 KB

english, 2002

17

Ab initio and DFT calculations of the structure and vibrational spectra of trigonelline

M Szafran, J Koput, Z Dega-Szafran, M Pankowski

Journal:

Journal of Molecular Structure

Year:

2002

Language:

english

File:

PDF, 299 KB

english, 2002

18

Structural, spectroscopic and theoretical studies of the 1:1 complex of N-methylpiperidine betaine with squaric acid

Z. Dega-Szafran, G. Dutkiewicz, Z. Kosturkiewicz, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2012

Language:

english

File:

PDF, 598 KB

english, 2012

19

Hydration of the complex of 4-methylquinoline N-oxide with chloroacetic acid in benzene

Dega-Szafran, Zofia, Szafran, Miros?aw, Rychlewski, Jacek

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1978

Language:

english

File:

PDF, 398 KB

english, 1978

20

ChemInform Abstract: Kinetics and Mechanisms of Nucleophilic Displacements with Heterocycles as Leaving Groups.

DEGA-SZAFRAN, Z., SZAFRAN, M., KATRITZKY, A. R.

Journal:

Chemischer Informationsdienst

Year:

1986

File:

PDF, 199 KB

1986

21

Structural, spectroscopic and theoretical studies of 6-hydroxyquinolinium bromide monohydrate

Szafran, M., Roszak, K., Dega-Szafran, Z., Komasa, A., Katrusiak, A., Barczyński, P.

Journal:

Vibrational Spectroscopy

Year:

2018

Language:

english

File:

PDF, 1.11 MB

english, 2018

22

ChemInform Abstract: INFRARED AND PROTON NUCLEAR MAGNETIC RESONANCE STUDIES OF HYDROGEN BONDS IN SOME PYRIDINE TRIFLUOROACETATES AND THEIR DEUTERATED ANALOGS IN DICHLOROMETHANE

DEGA-SZAFRAN, Z., DULEWICZ, E.

Journal:

Chemischer Informationsdienst

Year:

1983

File:

PDF, 120 KB

1983

23

Strong hydrogen bonds in 1:1 and 2:1 complexes of pyridine betaine with strong acids

Zofia Dega-Szafran, Maria Gdaniec, Monika Grundwald-Wyspiańska, Iwona Kowalczyk, Mirosław Szafran

Journal:

Journal of Molecular Structure

Year:

1994

Language:

english

File:

PDF, 859 KB

english, 1994

24

FT-IR, UV—visible and X-ray studies of complexes of pyridine N-oxides with pentachlorophenol

Zofia Dega-Szafran, Monika Grundwald-Wyspiańska, Anna Kania, Zofia Kosturkiewicz, Ewa Tykarska, Mirosław Szafran

Journal:

Journal of Molecular Structure

Year:

1995

Language:

english

File:

PDF, 858 KB

english, 1995

25

Structure of the 2:1 complex of 1-piperidineacetic acid and p-hydroxybenzoic acid studied by X-ray, FTIR, 1H, 13C NMR, and DFT methods

Z. Dega-Szafran, G. Dutkiewicz, Z. Kosturkiewicz, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2007

Language:

english

File:

PDF, 1.43 MB

english, 2007

26

Molecular structures, hydrogen bonding and electrostatic interactions of 3-(2-bromo-pyridinium)-propionic acid and 3-(pyridinium)-pivalic acid halides

Z. Dega-Szafran, A. Katrusiak, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2001

Language:

english

File:

PDF, 216 KB

english, 2001

27

Hydrogen bonds and proton location in 1:1 and 2:1 complexes of N-methylmorpholine betaine with picric acid

Z Dega-Szafran, A Katrusiak, M Szafran, E Sokołowska

Journal:

Journal of Molecular Structure

Year:

2002

Language:

english

File:

PDF, 192 KB

english, 2002

28

The influence of charges and hydrogen bond on the conformation of zwitterionic 3-(2-hydroxyalkyl-pyridinium)-propionates and their hydrobromides

Z. Dega-Szafran, A. Katrusiak, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2002

Language:

english

File:

PDF, 214 KB

english, 2002

29

Interactions of squaric acid with DABCO mono-betaine: Structural, spectroscopic and calculation studies

P. Barczyński, Z. Dega-Szafran, A. Katrusiak, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2012

Language:

english

File:

PDF, 722 KB

english, 2012

30

Structure and spectroscopic studies of 2,3-diethoxycarbonyl-1-methylpyridinium nitrate

Barczyński, P., Ratajczak-Sitarz, M., Nowaczyk, Ł., Katrusiak, A., Dega-Szafran, Z., Szafran, M.

Journal:

Journal of Molecular Structure

Year:

2013

Language:

english

File:

PDF, 777 KB

english, 2013

31

Kinetics and mechanism of nucleophilic displacements with heterocycles as leaving groups. 26. Collisionally activated dissociation of N-alkylpyridinium cations to pyridine and alkyl cations in the gas phase

Katritzky, Alan R., Watson, Clifford H., Dega-Szafran, Zofia, Eyler, John R.

Journal:

Journal of the American Chemical Society

Year:

1990

Language:

english

File:

PDF, 1.02 MB

english, 1990

32

Electrostatic Interactions and Conformations of Zwitterionic Pyridinium Alkanoates

Szafran, Mirosław, Dega-Szafran, Zofia, Katrusiak, Andrzej, Buczak, Grzegorz, Głowiak, Tadeusz, Sitkowski, Jerzy, Stefaniak, Lech

Journal:

Journal of Organic Chemistry

Year:

1998

Language:

english

File:

PDF, 239 KB

english, 1998

33

Kinetics and mechanisms of nucleophilic displacements with heterocycles as leaving groups. Part 20. Aggregation of some quaternary pyridinium salts in chlorobenzene

Dega-Szafran, Zofia, Szafran, Miroslaw, Katritzky, Alan R.

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1985

Language:

english

File:

PDF, 334 KB

english, 1985

34

Infrared and 1H nuclear magnetic resonance studies of hydrogen bonds in some pyridine trifluoroacetates and their deuteriated analogues in dichloromethane

Dega-Szafran, Zofia, Dulewicz, Ewa

Journal:

Journal of the Chemical Society Perkin Transactions 2

Year:

1983

Language:

english

File:

PDF, 543 KB

english, 1983

35

Spectroscopic, structural and theoretical investigation of bis(4-trimethylammoniumbenzoate) hydroiodide hydrate

Komasa, Anna, Katrusiak, Andrzej, Kaźmierczak, Michał, Dega-Szafran, Zofia, Szafran, Mirosław

Journal:

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

Year:

2015

Language:

english

File:

PDF, 831 KB

english, 2015

36

Structure of the complex of dimethylphenyl betaine with dichloroacetic acid studied by X-ray diffraction, DFT calculations, infrared and Raman spectra

Szafran, Mirosław, Komasa, Anna, Anioła, Michalina, Katrusiak, Andrzej, Dega-Szafran, Zofia

Journal:

Vibrational Spectroscopy

Year:

2016

Language:

english

File:

PDF, 426 KB

english, 2016

37

The structure of 4-(trimethylammonium)benzoic acid chloride studied by X-ray diffraction, DFT calculations, NMR and FTIR spectroscopy

M. Szafran, A. Katrusiak, Z. Dega-Szafran, I. Kowalczyk

Journal:

Journal of Molecular Structure

Year:

2011

Language:

english

File:

PDF, 1.01 MB

english, 2011

38

Molecular structure, hydrogen bonding and spectroscopic properties of the complex of piperidine-4-carboxylic acid with chloroacetic acid

A. Komasa, A. Katrusiak, M. Szafran, P. Barczyński, Z. Dega-Szafran

Journal:

Journal of Molecular Structure

Year:

2008

Language:

english

File:

PDF, 464 KB

english, 2008

39

Structure of 1-methylpyridinium-4-carboxylate monohydrate studied by X-ray, FT-IR, Raman, NMR and ab initio methods

M. Szafran, E. Bartoszak-Adamska, J. Koput, Z. Dega-Szafran

Journal:

Journal of Molecular Structure

Year:

2007

Language:

english

File:

PDF, 642 KB

english, 2007

40

Dipolar association of complexes of some pyridines with trifluoroacetic acid in benzene at 27°C

Z. Dega-Szafran

Journal:

Advances in Molecular Relaxation and Interaction Processes

Year:

1980

Language:

english

File:

PDF, 439 KB

english, 1980

41

Experimental and theoretical studies of 4-hydroxy-1-methylpiperidinium perchlorate

Zofia Dega-Szafran, Andrzej Katrusiak, Mirosław Szafran

Journal:

Journal of Molecular Structure

Year:

2008

Language:

english

File:

PDF, 446 KB

english, 2008

42

Crystal structure of bis(N-methylmorpholine betaine) hydrochloride, FTIR and NMR studies of 1:1 and 2:1 complexes of N-methylmorpholine betaine with mineral acids

Z Dega-Szafran, A Antkowiak, M Grundwald-Wyspiańska, E Nowak, Z Kosturkiewicz

Journal:

Journal of Molecular Structure

Year:

2002

Language:

english

File:

PDF, 185 KB

english, 2002

43

Kinetics and mechanisms of nucleophilic displacements with heterocycles as leaving groups. Part 27. Collisionally activated dissociation of N-alkylpyridinium cations to pyridinium cation and olefins in the gas phase

Katritzky, Alan R., Watson, Clifford H., Dega-Szafran, Zofia, Eyler, John R.

Journal:

Journal of the American Chemical Society

Year:

1990

Language:

english

File:

PDF, 728 KB

english, 1990

44

Kinetics and mechanisms of nucleophilic displacement with heterocycles as leaving groups. 17. Solvolysis of 14-(primary alkyl)-5,6,8,9-tetrahydro-7-phenyldibenzo[c,h]acridiniums: rates, identification of products, activation parameters, and a general discussion of mechanism

Katritzky, Alan R., Dega-Szafran, Zofia, Lopez-Rodriguez, Maria L., King, Roy W.

Journal:

Journal of the American Chemical Society

Year:

1984

Language:

english

File:

PDF, 1.05 MB

english, 1984

45

Synthesis, spectroscopic and theoretical studies of (R/S)-piperidinium-3-carboxylic acid 2,6-dichloro-4-nitrophenolate

Anioła, Michalina, Dega-Szafran, Zofia, Katrusiak, Andrzej, Komasa, Anna, Szafran, Mirosław

Journal:

Vibrational Spectroscopy

Year:

2016

Language:

english

File:

PDF, 1.15 MB

english, 2016

46

Structure, spectroscopy and DFT calculations of 1,2-di(3-hydroxymethylpyridinium)ethane dibromide

Komasa, Anna, Barczyński, Piotr, Ratajczak-Sitarz, Małgorzata, Katrusiak, Andrzej, Dega-Szafran, Zofia, Szafran, Mirosław

Journal:

Journal of Molecular Structure

Year:

2016

Language:

english

File:

PDF, 4.61 MB

english, 2016

47

Proton and carbon-13 NMR studies of 1-substituted pyridinium salts

Alan R. Katritzky, Zofia Dega-Szafran

Journal:

Magnetic Resonance in Chemistry

Year:

1989

Language:

english

File:

PDF, 282 KB

english, 1989

48

Influence of excess base and solvents on hydrogen bond and proton transfer in complexes between dichloroacetic acid and substituted pyridines

Piotr Barczyński, Zopia Dega-Szafran, Mirosław Szafran

Journal:

Journal of Molecular Liquids

Year:

1987

Language:

english

File:

PDF, 694 KB

english, 1987

49

Crystal structure and spectroscopic properties of the 1:1 complex of pyridine betaine with p-hydroxybenzoic acid

Z. Dega-Szafran, G. Dutkiewicz, Z. Kosturkiewicz, M. Szafran

Journal:

Journal of Molecular Structure

Year:

2009

Language:

english

File:

PDF, 568 KB

english, 2009

50

Crystal and molecular structure of the 2:1 complex of 1-piperidineacetic acid with perchloric acid

Z Dega-Szafran, M Petryna, M Szafran, E Tykarska

Journal:

Journal of Molecular Structure

Year:

2004

Language:

english

File:

PDF, 218 KB

english, 2004

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