Iwona Gulaczyk
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View article: Deazaalloxazines – Flavin Derivatives That Provide Reductive Photoredox Catalysis with Inert Substrates
Deazaalloxazines – Flavin Derivatives That Provide Reductive Photoredox Catalysis with Inert Substrates Open
Reductive transformations of substances that are difficult to reduce continue to pose challenges for photoredox catalysis. Promising photoreduction catalysts include flavin and deazaflavin derivatives; however, even their reductive abiliti…
View article: Reinvestigation of the torsional ground state and the v26 = 1 state of s-trans-isoprene using jet-cooled microwave and infrared spectroscopies: Challenging high barrier internal rotation
Reinvestigation of the torsional ground state and the v26 = 1 state of s-trans-isoprene using jet-cooled microwave and infrared spectroscopies: Challenging high barrier internal rotation Open
View article: Porous Polysulfone/Activated Carbon Capsules as Scaffolds for Enzyme Immobilization
Porous Polysulfone/Activated Carbon Capsules as Scaffolds for Enzyme Immobilization Open
Enzymes play a vital role in various industrial sectors and are essential components of many products. Hybrid enzyme-polymeric capsules were developed using polysulfone-activated carbon capsules as scaffolds. The polysulfone-activated carb…
View article: Introduction of flavin anions into photoredox catalysis: acid–base equilibria of lumichrome allow photoreductions with an anion of an elusive 10-unsubstituted isoalloxazine
Introduction of flavin anions into photoredox catalysis: acid–base equilibria of lumichrome allow photoreductions with an anion of an elusive 10-unsubstituted isoalloxazine Open
Deprotonation of 3-methyllumichrome results in an anion of elusive 10- H -isoalloxazine which acts as a strong reducing agent upon blue/cyan light excitation.
View article: Giant Deformation between Osmocene Phases Induced by Anagostic Bonds Promoted under High Pressure
Giant Deformation between Osmocene Phases Induced by Anagostic Bonds Promoted under High Pressure Open
Above 3.6 GPa, osmocene, α-Os(C5H5)2, transforms to the new phase β-Os(C5H5)2, unprecedented among prototypic metallocenes M(C5H5)2. Despite the isostructural ambient-pressure phases of osmocene α-Os(C5H5)2 and ruthenocene α-Ru(C5H5)2, the…
View article: Rotational spectrum and interstellar detection of the first torsionally excited state of methylamine
Rotational spectrum and interstellar detection of the first torsionally excited state of methylamine Open
Context. Methylamine (CH 3 NH 2 ) was first detected in the interstellar medium (ISM) toward Sgr B2 almost 50 years ago by observation of rotational transitions in its torsional ground state. Methylamine exhibits two large-amplitude motion…
View article: High surface area, spongy graphitic carbon nitride derived by selective etching by Pt and Ru nanoparticles in hydrogen
High surface area, spongy graphitic carbon nitride derived by selective etching by Pt and Ru nanoparticles in hydrogen Open
It was observed for the first time that the specific surface area of graphitic carbon nitride (g-C 3 N 4 ) increased from 32 m 2 g −1 to 142 and 171 m 2 g −1 for Pt and Ru, respectively, due to the etching of g-C 3 N 4 by Pt and Ru nanopar…
View article: A SIMULTANEOUS FIT OF THE TORSION-WAGGING-ROTATIONAL LEVELS FROM THE EXCITED (V<sub>t</sub> = 0, 1 and 2) STATES OF METHYLAMINE USING A HYBRID (TUNNELING AND NON-TUNNELING) HAMILTONIAN FORMALISM
A SIMULTANEOUS FIT OF THE TORSION-WAGGING-ROTATIONAL LEVELS FROM THE EXCITED (V<sub>t</sub> = 0, 1 and 2) STATES OF METHYLAMINE USING A HYBRID (TUNNELING AND NON-TUNNELING) HAMILTONIAN FORMALISM Open
We used our hybrid program\\footnote{I. Kleiner and J. T. Hougen, J. Mol. Spectrosc., 368, 111255 (2020)} to fit an extended dataset consisting of almost 30000 rotational-torsionial-wagging transitions in the MW \nand FIR of v$_t$ = 0, 1 a…
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Frontmatter Open
View article: Large amplitude inversion tunneling motion in ammonia, methylamine, hydrazine, and secondary amines: From structure determination to coordination chemistry
Large amplitude inversion tunneling motion in ammonia, methylamine, hydrazine, and secondary amines: From structure determination to coordination chemistry Open
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View article: The NH<sub>2</sub> scissors band of methylamine
The NH<sub>2</sub> scissors band of methylamine Open
For the first time the ν 4 NH 2 scissors band has been assigned in a high-resolution infrared spectrum. A rotationally resolved spectrum of methylamine was recorded using two infrared spectroscopic techniques. A White-type multi-pass cell …
View article: A SIMULTANEOUS FIT OF vt = 0 AND 1 TORSION-WAGGING-ROTATIONAL LEVELS OF METHYLAMINE USINGA HYBRID (TUNNELING AND NON-TUNNELING) HAMILTONIAN FORMALISM
A SIMULTANEOUS FIT OF vt = 0 AND 1 TORSION-WAGGING-ROTATIONAL LEVELS OF METHYLAMINE USINGA HYBRID (TUNNELING AND NON-TUNNELING) HAMILTONIAN FORMALISM Open
This work is in memory of Dr. Jon Hougen deceased on January 28th 2019 who dedicated his life to spectroscopy and worked on the present project very actively untill the end of December 2018. We will show the latest results obtained with Jo…
View article: Gas-phase high-resolution molecular spectroscopy for LAV molecules
Gas-phase high-resolution molecular spectroscopy for LAV molecules Open
High-resolution infrared (IR) spectroscopy is essential to the analysis of molecular rotation-vibration spectra. The high-resolution spectra deliver much information about structure and dynamic of molecules, but often they are very complex…
View article: ACCURATE ROVIBRATIONAL ENERGIES FOR THE FIRST EXCITED TORSIONAL STATE OF METHYLAMINE
ACCURATE ROVIBRATIONAL ENERGIES FOR THE FIRST EXCITED TORSIONAL STATE OF METHYLAMINE Open