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A linear CuII-GdIII-CuII-GdIII complex derived from the assembly reaction of [NaCuIIH3Ldpen(meso)] and GdIII (thd)3(H2O)2] (H3L =meso-1,2-diphenyl-1-(2-oxybenzamido)-2-(2-oxy-3-ethoxybenzylideneamino)ethane and Hthd = 2, 2, 6, 6-tertra-methyl-3,5-heptanedione).
Autorzy
Rok wydania
2011
Czasopismo
Numer woluminu
30
Strony
1127-1133
DOI
10.1016/j.poly.2011.01.008
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A linear tetranuclear CuII–GdIII–CuII–GdIII complex [CuIILdpen(meso)GdIII(thd)2(H2O)]2 was synthesized from the reaction of [NaCuIILdpen(meso)(DMF)] with [GdIII(thd)3(H2O)2], and the structures and magnetic properties were investigated, where H3Ldpen(meso) = meso-1,2-diphenyl-1-(2-hydroxybenzamido)-2-(2-hydroxy-3-ethoxybenzylideneamino)ethane and Hthd = 2,2,6,6-tetramethyl-3,5-heptanedione. The CuII complex component [NaCuIILdpen(meso)(DMF)] has a one-dimensional (1D) chain structure, in which the Na+ ion is coordinated by two phenoxo and an ethoxy oxygen atoms of a CuII complex and an amido oxygen atom of the adjacent CuII unit to produce the 1D structure, in which the diphenylethylenediamine moieties have the array of {(1R,2S)-Na-(1S,2R)}1∞. The assembly reaction of the CuII and GdIII components gave a linear complex with the array of Cu(1)–Gd(1)–Cu(2)–Gd(2), in which two diphenylethylenediamine moieties have the same chirality of (1R,2S)-(1R,2S) or (1S,2R)-(1S,2R). Two linear Cu(1)–Gd(1)–Cu(2)–Gd(2) units are linked by hydrogen bonds through two water molecules to give a cyclic structure with a center of symmetry. The temperature dependence of the magnetic susceptibilities and field-dependent magnetization revealed the ferromagnetic interaction between the CuII and GdIII ions within the linear chain.
Słowa kluczowe
d–f Complex, Chiral aggregation, Ligand-complex, Assembly reaction, magnetism
Adres publiczny
https://doi.org/10.1016/j.poly.2011.01.008
Strona internetowa wydawcy
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