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Crystal structures and magnetic properties of a set of dihalo-bridged oxalamidato copper(II) dimers


Žilić, Dijana; Rakvin, Boris; Milić, Dalibor; Pajić, Damir; Đilović, Ivica; Cametti, Massimo; Džolić, Zoran
Crystal structures and magnetic properties of a set of dihalo-bridged oxalamidato copper(II) dimers // Dalton transactions, 43 (2014), 31; 11877-11887 doi:10.1039/C4DT00925H (međunarodna recenzija, članak, znanstveni)


Naslov
Crystal structures and magnetic properties of a set of dihalo-bridged oxalamidato copper(II) dimers

Autori
Žilić, Dijana ; Rakvin, Boris ; Milić, Dalibor ; Pajić, Damir ; Đilović, Ivica ; Cametti, Massimo ; Džolić, Zoran

Izvornik
Dalton transactions (1477-9226) 43 (2014), 31; 11877-11887

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

Ključne riječi
Copper dimers; dihalo-bridged; crystal structures; EPR; magnetization

Sažetak
A set of four copper(II) complexes, L1–X and L2–X (X = Cl, Br ; L1 = N-(L-leucine methyl ester)-N′-((2-pyridin-2-yl)methyl)oxalamide and L2 = N-benzyl-N′-((2-pyridin-2-yl)methyl)oxalamide), have been synthesized and characterized by X-ray structural analysis, electron paramagnetic resonance (EPR) spectroscopy on single crystals and by SQUID magnetization measurements. X-ray diffraction studies show one-dimensional hydrogen bonded networks of dimeric copper(II)-complexes bridged by two halide ions and with the two metal centers 3.44–3.69 Å apart. The geometry at each copper(II) atom is ideal or near ideal square pyramidal. EPR and SQUID studies indicate that all complexes exhibit weak antiferromagnetic interactions between the Cu(II) paramagnetic centers, with exchange parameter |J| ~ 1 cm−1. Magneto-structural comparisons among similar dihalo-bridged Cu(II) dinuclear complexes are also provided, and a possible correlation has been established.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija



POVEZANOST RADA


Projekt / tema
098-0982904-2912 - Samo-udruživanje u gelovima i sinteza funkcionalnih hibridnih materijala (Leo Frkanec, )
098-0982915-2939 - Molekulska struktura i dinamika sustava s paramagnetskim česticama (Marina Ilakovac-Kveder, )
119-1191458-1017 - Nanomagneti (Krešo Zadro, )
119-1193079-1084 - Strukturno istraživanje bioloških makromolekula metodom rentgenske difrakcije (Dubravka Matković-Čalogović, )

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


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