Pregled bibliografske jedinice broj: 478545
Single crystals of DPPH grown from diethyl ether and carbon disulfide solutions – Crystal structures, IR, EPR and magnetization studies
Single crystals of DPPH grown from diethyl ether and carbon disulfide solutions – Crystal structures, IR, EPR and magnetization studies // Journal of magnetic resonance (San Diego, Calif.), 207 (2010), 1; 34-41 doi:10.1016/j.jmr.2010.08.005 (međunarodna recenzija, članak, znanstveni)
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Naslov
Single crystals of DPPH grown from diethyl ether and carbon disulfide solutions – Crystal structures, IR, EPR and magnetization studies
Autori
Žilić, Dijana ; Pajić, Damir ; Jurić, Marijana ; Molčanov, Krešimir ; Rakvin, Boris ; Planinić, Pavica ; Zadro, Krešo
Izvornik
Journal of magnetic resonance (San Diego, Calif.) (1090-7807) 207
(2010), 1;
34-41
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
DPPH ; crystal structure ; diethyl ether ; carbon disulfide ; EPR ; magnetization
Sažetak
Single crystals of the free radical 2, 2-diphenyl-1-picrylhydrazyl (DPPH) obtained from diethyl ether (ether) and carbon disulfide (CS2) were characterized by the X-ray diffraction, IR, EPR and SQUID magnetization techniques. The X-ray structural analysis and IR spectra showed that the DPPH form crystallized from ether (DPPH1) is solvent free, whereas that one obtained from CS2 (DPPH2) is a solvate of the composition 4DPPH CS2. Principal values of the g-tensor were estimated by the X-band EPR spectroscopy at room and low (10 K) temperatures. Magnetization studies revealed the presence of antiferromagnetically coupled dimers in both types of crystals. However, the way of dimerization as well as the strength of exchange couplings are different in the two DPPH samples, which is in accord with their crystal structures. The obtained results improved parameters accuracy and enabled better understanding of properties of DPPH as a standard sample in the EPR spectrometry.
Izvorni jezik
Engleski
Znanstvena područja
Fizika, Kemija
POVEZANOST RADA
Projekti:
098-0982904-2946 - Višenuklearni metalni sustavi: sinteza i svojstva (Perić, Berislav, MZOS ) ( CroRIS)
098-0982915-2939 - Molekulska struktura i dinamika sustava s paramagnetskim česticama (Ilakovac-Kveder, Marina, MZOS ) ( CroRIS)
098-1191344-2943 - Protein-ligand međudjelovanja na atomnoj razini (Luić, Marija, MZOS ) ( CroRIS)
119-1191458-1017 - Nanomagneti (Zadro, Krešo, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb
Profili:
Marijana Jurić
(autor)
Krešo Zadro
(autor)
Krešimir Molčanov
(autor)
Damir Pajić
(autor)
Pavica Planinić
(autor)
Boris Rakvin
(autor)
Dijana Žilić
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
- MEDLINE