Naslov
Magneto-Structural Study of Dihalo-Bridged Copper Dimers: Intra- and Interdimer Interactions as Revealed by Single-Crystal ESR Spectroscopy

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

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
2018 Joint meeting of the DPG and EPS Condensed Matter Divisions / - , 2018, MA 168-MA 168

Skup
2018 Joint meeting of the DPG and EPS Condensed Matter Divisions

Mjesto i datum
Berlin, Njemačka, 11.03.2018. - 16.03.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
copper dimers, halogen mediated exchange, ESR spectroscopy

Sažetak
Four complexes with two different oxalamide ligands were synthesized: [CuLA(μ-X)]2 and [CuLV(μ-X)]2, X=Cl or Br. The geometry at each Cu(II) ion is ideal or near ideal square pyramidal, whereas two pyramids share one base-to-apex edge with parallel basal planes. The complexes are linked by hydrogen bonds into infinite chains and are further linked into a 3D network. Magn. susc. measurements show that coppers in the dimers are weakly AFM coupled. Despite very similar structures of these complexes compared with the complexes previously reported and characterized by similar X-ray, magnetization and powder ESR results, single crystal ESR spectra reveal significant differences. Here presented complexes show unusual anisotropic splitting and merging of ESR lines when their crystals rotate in magn. field. The observation of this partially resolved intradimer dipolar splitting enabled estimation of weak interdimer exchange interaction parameter.[1, 2] [1] Žilić D. et al., Dalton Trans. 2014, 43, 11877. [2] Žilić D. et al., ChemPhysChem 2017, 18, 2397. Supported by Croatian Science Foundation HrZZ-UIP-2014-09-9775.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA