English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Nitroxide Spin Labels-Magnetic Parameters and Hydrogen-Bond Formation: A High-Field EPR and EDNMR Study

Nalepa, A. I., Möbius, K., Plato, M., Lubitz, W., & Savitsky, A. (2019). Nitroxide Spin Labels-Magnetic Parameters and Hydrogen-Bond Formation: A High-Field EPR and EDNMR Study. Applied Magnetic Resonance, 50(1-3), 1-16. doi:10.1007/s00723-018-1073-3.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Nalepa, Anna Irena1, Author           
Möbius, Klaus1, Author           
Plato, Martin, Author
Lubitz, Wolfgang1, Author           
Savitsky, Anton1, Author           
Affiliations:
1Research Department Lubitz, Max Planck Institute for Bioinorganic Chemistry, Max Planck Society, ou_3023878              

Content

show
hide
Free keywords: -
 Abstract: In this work, we report on a detailed high-field EPR investigation of magnetic parameters of deuterated nitroxide radicals dissolved in deuterated frozen solvents of polar or unpolar, protic or aprotic character including ortho-terphenyl, methanol, propanol, glycerol, aniline, phenol, and water. The analysis of the high-resolution W-band (95GHz) pulsed ELDOR-detected NMR (EDNMR) and 244GHz cw EPR spectra yielded precise electron Zeeman, g(xx), N-14 hyperfine, A(zz), and N-14 quadrupole, P-zz, tensor components, which are most sensitive probes for the microenvironment of dissolved nitroxide radicals. Remarkable changes in the solvation networks were foundin the various matrices. The solvent-dependent magnetic parameters of the nitroxide are discussed on the basis of previous semi-empirical and DFT quantum chemical calculations in an attempt to adequately model the nitroxide-matrix interactions. The obtained results demonstrate that the principal values of all the magnetic interaction parameters primarily depend on the nitroxide hydrogen-bond situation and the type of hydrogen-bond donor group of the solvent. The solvent bulk polarity, as described by the static dielectric constant, is of minor importance.

Details

show
hide
Language(s): eng - English
 Dates: 2019
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: ISI: 000458124800001
DOI: 10.1007/s00723-018-1073-3
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Applied Magnetic Resonance
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Springer-Verlag
Pages: - Volume / Issue: 50 (1-3) Sequence Number: - Start / End Page: 1 - 16 Identifier: ISSN: 0937-9347
CoNE: https://pure.mpg.de/cone/journals/resource/0937-9347