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Pregled bibliografske jedinice broj: 787350

Magnetic order in a novel 3D oxalate-based coordination polymer {; ; ; [Cu(bpy)3] [Mn2(C2O4)3]·H2O}; ; ; n


Jurić, Marijana; Pajić, Damir; Žilić, Dijana; Rakvin, Boris; Molčanov, Krešimir; Popović, Jasminka
Magnetic order in a novel 3D oxalate-based coordination polymer {; ; ; [Cu(bpy)3] [Mn2(C2O4)3]·H2O}; ; ; n // Dalton transactions, 44 (2015), 20626-20635 doi:10.1039/c5dt02933c (međunarodna recenzija, članak, znanstveni)


Naslov
Magnetic order in a novel 3D oxalate-based coordination polymer {; ; ; [Cu(bpy)3] [Mn2(C2O4)3]·H2O}; ; ; n

Autori
Jurić, Marijana ; Pajić, Damir ; Žilić, Dijana ; Rakvin, Boris ; Molčanov, Krešimir ; Popović, Jasminka

Izvornik
Dalton transactions (1477-9226) 44 (2015); 20626-20635

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Heterometallic oxalate-based compound ; 3D anionic network ; CuMn2O4 ; spinel structure ; magetic study

Sažetak
A heterometallic coordination polymer {; ; ; [Cu(bpy)3][Mn2(C2O4)3]·H2O}; ; ; n (1 ; bpy = 2, 2’- bipyridine) was synthesized using a building- block approach and characterized by IR spectroscopy, single-crystal X-ray diffraction, magnetization measurement, and X-band ESR spectroscopy both on a single crystal and a polycrystalline sample. The molecular structure of 1 is made of a three-dimensional (3D) anionic network [Mn2(C2O4)3]n 2n− and tris- chelated cations [Cu(bpy)3]2+ occupying the vacancies of the framework. In compound 1 magnetic order is confirmed below 12.8 K – magnetization measurements reveal an antiferromagnetic- like network of canted Mn2+ spins with incorporated paramagnetic Cu2+ centres. The ESR spectroscopy distinctly shows the phase transition ; above T ≈ 13 K, single isotropic Lorentzian lines of Mn2+ ions in the high spin state S = 5/2 were observed, while below this temperature, only characteristic Cu2+ signals from cations were detected. Thermal decomposition residues of 1 at different temperatures (800–1000 °C) were analyzed by powder X-ray diffraction ; by heating the sample up to 1000 °C the spinel oxide CuMn2O4 [94.1(2) wt%] was formed. From the refined structural parameters, it could be seen that the obtained spinel is characterized by the inversion parameter δ ∼ 0.8, and therefore the structural formula at room temperature can be written as tet[Cu0.17Mn0.83]oct[Mn1.17Cu0.83]O4.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2013-11-1108 - Karakterizacija niskotemperaturne molekulske dinamike sustava s neuređenom rešetkom metodom ESR (Marina Kveder, )
HRZZ-IP-2014-09-4079 - Novi metal-organsi sustavi s oksalatnim i kinoidnim ligandima s podešenim svojstvima pogodnim za primjenu (Krešimir Molčanov, )
HRZZ-UIP-2014-09-8276 - Multiferični i magnetoelektrični sustavi (Damir Pajić, )

Ustanove
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

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


Citati