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Pregled bibliografske jedinice broj: 881853

Magneto-Structural Characterization of Oxalamide Dihalo-Bridged Copper Dimers : Intra- and Interdimer Interactions Studied by Single Crystal ESR Spectroscopy


Žilić, Dijana; Maity, Debdeep; Cetina, Mario; Molčanov, Krešimir; Džolić, Zoran; Herak, Mirta
Magneto-Structural Characterization of Oxalamide Dihalo-Bridged Copper Dimers : Intra- and Interdimer Interactions Studied by Single Crystal ESR Spectroscopy // ChemPhysChem, 18 (2017), 17; 2397-2408 doi:10.1002/cphc.201700433 (međunarodna recenzija, članak, znanstveni)


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Naslov
Magneto-Structural Characterization of Oxalamide Dihalo-Bridged Copper Dimers : Intra- and Interdimer Interactions Studied by Single Crystal ESR Spectroscopy

Autori
Žilić, Dijana ; Maity, Debdeep ; Cetina, Mario ; Molčanov, Krešimir ; Džolić, Zoran ; Herak, Mirta

Izvornik
ChemPhysChem (1439-4235) 18 (2017), 17; 2397-2408

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

Ključne riječi
copper ; dipolar splitting ; EPR spectroscopy ; magnetic properties ; single crystal

Sažetak
The detailed single crystal electron spin resonance (ESR) analysis of oxalamide complexes with halogen-bridged copper dimers, supported by X-ray, magnetic susceptibility and powder ESR studies, is reported. Four complexes with two different ligands were synthesized: [CuLA(μ-X)]2 and [CuLV(μ-X)]2, where LA = N-(L-alanine methyl ester)-N’-((2-pyridine-2-yl)methyl)oxalamide and LV=N-(L-valine methyl ester)-N’-((2-pyridine- 2-yl)methyl)oxalamide, while X=Cl or Br. X-ray analysis shows that geometry at each copper(II) ion is square pyramidal while two pyramids share one base-to-apex edge with parallel basal planes. The complexes are linked by hydrogen bonds into infinite chains and further into a 3D network. Susceptibility measurements show that coppers in dimers are weakly antiferromagnetically coupled (|J| = 1 − 2 cm−1). From powder ESR, g-values and dx2−y2 orbital as the ground state of unpaired electron are determined. The complexes show unusual anisotropic splitting and merging of ESR lines when their single crystals rotate in magnetic field. The observation of this partially resolved intradimer dipolar splitting enabled estimation of weak interdimer exchange interaction parameter |J0| = 0.001 cm−1.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija



POVEZANOST RADA


Projekt / tema
HRZZ-UIP-2014-09-9775 - utjecaj magnetske anziotropije na kvantne spinske sustave (IMAQSS) (Herak, Mirta, HRZZ)

Ustanove
Institut za fiziku, Zagreb,
Institut "Ruđer Bošković", Zagreb,
Tekstilno-tehnološki fakultet, Zagreb

Profili:

Avatar Url Mario Cetina (autor)

Avatar Url Zoran Džolić (autor)

Avatar Url Mirta Herak (autor)

Avatar Url Krešimir Molčanov (autor)

Avatar Url Dijana Žilić (autor)

Citiraj ovu publikaciju

Žilić, Dijana; Maity, Debdeep; Cetina, Mario; Molčanov, Krešimir; Džolić, Zoran; Herak, Mirta
Magneto-Structural Characterization of Oxalamide Dihalo-Bridged Copper Dimers : Intra- and Interdimer Interactions Studied by Single Crystal ESR Spectroscopy // ChemPhysChem, 18 (2017), 17; 2397-2408 doi:10.1002/cphc.201700433 (međunarodna recenzija, članak, znanstveni)
Žilić, D., Maity, D., Cetina, M., Molčanov, K., Džolić, Z. & Herak, M. (2017) Magneto-Structural Characterization of Oxalamide Dihalo-Bridged Copper Dimers : Intra- and Interdimer Interactions Studied by Single Crystal ESR Spectroscopy. ChemPhysChem, 18 (17), 2397-2408 doi:10.1002/cphc.201700433.
@article{article, year = {2017}, pages = {2397-2408}, DOI = {10.1002/cphc.201700433}, keywords = {copper, dipolar splitting, EPR spectroscopy, magnetic properties, single crystal}, journal = {ChemPhysChem}, doi = {10.1002/cphc.201700433}, volume = {18}, number = {17}, issn = {1439-4235}, title = {Magneto-Structural Characterization of Oxalamide Dihalo-Bridged Copper Dimers : Intra- and Interdimer Interactions Studied by Single Crystal ESR Spectroscopy}, keyword = {copper, dipolar splitting, EPR spectroscopy, magnetic properties, single crystal} }

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


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