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Inne
Rhenium(IV)-copper(II) hetreobimetallic complexes: synthesis, crystal structure and magnetic properties.
Autorzy
Rok wydania
2008
Czasopismo
Numer woluminu
27
Strony
2464-2470
DOI
10.1016/j.poly.2008.04.056
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
Two Re(IV)–Cu(II) heterometallic complexes {(CuLα)[ReCl4(ox)]}n (where Lα = N-meso-5,12-Me2-7,14-Et2-[14]-4,11-dieneN4), 1, and (CuLβ)[ReCl4(ox)] (Lβ = N-rac-5,12-Me2-7,14-Et2-[14]-4,11-dieneN4N-rac-5,12-Me2-7,14-Et2-[14]-4,11-dieneN4), 2, were synthesized. The [CuL2+] macrocyclic cation is coordinated from above and below by [ReCl4(ox)]2− units through the chloro-ligands and creates a chloro-bridged heterometallic ReIV–CuII one-dimensional zig-zag chain. Compound 2 can be viewed as a heterobimetallic dinuclear unit, in which the Re(IV)-Cu(II) centers are linked by an oxalato bridge. The magnetic behavior of 1 and 2 has been investigated over the temperature range 1.8–300 K. Compound 1 behaves like a ferrimagnetic {Re(IV)–Cu(II)} bimetallic, one-dimensional chain with intrachain antiferromagnetic coupling. Compound 2 shows a weak antiferromagnetic interaction within the [Re(IV)–Cu(II)] unit along with a strong single-ion anisotropy, D(Re) = −63 cm−1.
Słowa kluczowe
Chain structure, Chloro-bridged Re(IV) complexes, Macrocyclic complexes, Exchange interaction, Zero-field splitting
Adres publiczny
https://doi.org/10.1016/j.poly.2008.04.056
Strona internetowa wydawcy
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