Detail publikace

Polyradical PROXYL/TEMPO Conjugates Connected by Ester/Amide Bridges: Synthesis, Physicochemical Studies, and DFT Calculations

GURSKÁ, M. BREZOVÁ, V. ŠALITROŠ, I. SVORC, L. SPANIK, I. MONCOL, J. PAVLIK, J. SZOLCSANYI, P.

Originální název

Polyradical PROXYL/TEMPO Conjugates Connected by Ester/Amide Bridges: Synthesis, Physicochemical Studies, and DFT Calculations

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

: A series of di-/trinitroxide esters and amides featuring PROXYL and/or TEMPO radicals connected with alicyclic bridges were prepared in 61-92 % yields and their properties were analysed by using multiple experimental techniques. The examination of EPR spectra of radicals in organic solvents augmented with DFT calculations brought valuable information on the conformational dynamics and spin exchange mechanisms. Cyclic voltammetry investigations revealed (quasi)reversible electrochemical behaviour of studied nitroxides with their half-wave potentials ranging from -51 to -17 mV. SQUID measurements of selected radicals revealed that the magnetism of di- and trinitroxides is significantly different, since antiferromagnetic coupling in biradicals is notably larger than in triradicals. The single-crystal X-ray analysis of selected biradicals revealed the existence of 3D supramolecular networks of molecules linked through hydrogen-bonding interactions. These polynitroxide radicals can serve as promising bridging or chelating ligands in the synthesis of transition-metal-based molecular magnets.

Klíčová slova

electrochemistry; magnetism; nitroxides; radicals; spectroscopy

Autoři

GURSKÁ, M.; BREZOVÁ, V.; ŠALITROŠ, I.; SVORC, L.; SPANIK, I.; MONCOL, J.; PAVLIK, J.; SZOLCSANYI, P.

Vydáno

1. 3. 2021

Nakladatel

WILEY-V C H VERLAG GMBH

Místo

WEINHEIM

ISSN

2192-6506

Periodikum

ChemPlusChem

Ročník

86

Číslo

3

Stát

Spolková republika Německo

Strany od

396

Strany do

405

Strany počet

10

URL

https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cplu.202000803

BibTex

@article{BUT173118,
  author="GURSKÁ, M. and BREZOVÁ, V. and ŠALITROŠ, I. and SVORC, L. and SPANIK, I. and MONCOL, J. and PAVLIK, J. and SZOLCSANYI, P.",
  title="Polyradical PROXYL/TEMPO Conjugates Connected by Ester/Amide Bridges: Synthesis, Physicochemical Studies, and DFT Calculations",
  journal="ChemPlusChem",
  year="2021",
  volume="86",
  number="3",
  pages="396--405",
  doi="10.1002/cplu.202000803",
  issn="2192-6506",
  url="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cplu.202000803"
}