Joanna Krakowiak

Prof. Dr. Joanna Krakowiak

Faculty of Chemistry, Physical Chemistry Deparment, Gdańsk University of Technology, Gdansk, Poland
orcid

Research Focus & Metrics

Academic Career Length

28Years (1999-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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5 September 2012 in Inorganic Chemistry
Verified
Journal Article
Open access
Joanna KrakowiakJoanna Krakowiak
Joanna Krakowiak
DLDaniel Lundberg
Daniel Lundberg
IPIngmar Persson
Ingmar Persson
The coordination chemistry of hydrated and solvated vanadium(III), oxovanadium(IV), and dioxovanadium(V) ions in the oxygen-donor solvents water, dimethyl sulfoxide (DMSO), and N,N′-dimethylpropyleneurea (DMPU) has been studied in solution by extended X-ray absorption fine structure (EXAFS) and large-angle X-ray scattering (LAXS) and in the solid state by single-crystal X-ray diffraction and EXAFS. The hydrated vanadium(III) ion has a regular octahedral configuration with a mean V–O bond distance of 1.99 Å. In the hydrated and DMSO-solvated oxovanadium(IV) ions, vanadium binds strongly to an oxo group at ca. 1.6 Å. The solvent molecule trans to the oxo group is very weakly bound, at ca. 2.2 Å, while the remaining four solvent molecules, with a mean V–O bond distance of 2.0 Å, form a plane slightly below the vanadium atom; the mean O═V—Operp bond angle is ca. 98°. In the DMPU-solvated oxovanadium(IV) ion, the space-demanding properties of the DMPU molecule leave no solvent molecule in the trans position to the oxo group, which reduces the coordination number to 5. The O═V—O bond angle is consequently much larger, 107°, and the mean V═O and V–O bond distances decrease to 1.58 and 1.97 Å, respectively. The hydrated and DMSO-solvated dioxovanadium(V) ions display a very distorted octahedral configuration with the oxo groups in the cis position with a mean V═O bond distance of 1.6 Å and a O═V═O bond angle of ca. 105°. The solvent molecules trans to the oxo groups are weakly bound, at ca. 2.2 Å, while the remaining two have bond distances of 2.02 Å. The experimental studies of the coordination chemistry of hydrated and solvated vanadium(III,IV,V) ions are complemented by summarizing previously reported crystal structures to yield a comprehensive description of the coordination chemistry of vanadium with oxygen-donor ligands.

1 February 2008 in The Journal of Physical Chemistry B
Verified
Journal Article
Closed access
APAneta Panuszko
Aneta Panuszko
EGEmilia Gojło
Emilia Gojło
JZJan Zielkiewicz
Jan Zielkiewicz
MŚMaciej Śmiechowski
Maciej Śmiechowski
Joanna KrakowiakJoanna Krakowiak
Joanna Krakowiak
JSJanusz Stangret
Janusz Stangret

1 January 2019 in International Journal of Biological Macromolecules
Verified
Journal Article
Closed access
JWJarosław Wawer
Jarosław Wawer
MSMichał Szociński
Michał Szociński
MOMarcin Olszewski
Marcin Olszewski
RPRafał Piątek
Rafał Piątek
MNMateusz Naczk
Mateusz Naczk
Joanna KrakowiakJoanna Krakowiak
Joanna Krakowiak

1 June 2011 in The Journal of Chemical Thermodynamics
Verified
Journal Article
Closed access
Joanna KrakowiakJoanna Krakowiak
Joanna Krakowiak

1 December 2014 in The Journal of Chemical Thermodynamics
Verified
Journal Article
Closed access
Joanna KrakowiakJoanna Krakowiak
Joanna Krakowiak
JWJarosław Wawer
Jarosław Wawer

1 September 2014 in International Journal of Biological Macromolecules
Verified
Journal Article
Closed access
JWJarosław Wawer
Jarosław Wawer
Joanna KrakowiakJoanna Krakowiak
Joanna Krakowiak
MSMichał Szociński
Michał Szociński
ZLZofia Lustig
Zofia Lustig
MOMarcin Olszewski
Marcin Olszewski
KSKamila Szostak
Kamila Szostak