| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 |
 615 0 |
 SM ISO690:2012BOTEZAT, Olga, VAN LEUSEN, Jan, KOGERLER, Paul, BACA, Svetlana. Ultrasound-Assisted Formation of {Fe 6 Ln/Y 4 } Wheel-Shaped Clusters and Condensed {Fe 4 Ln/Y 2 } Aggregates. In: European Journal of Inorganic Chemistry, 2019, nr. 16(2019), pp. 2236-2244. ISSN 1434-1948. DOI: https://doi.org/10.1002/ejic.201900175 |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
  European Journal of Inorganic Chemistry |
||||||
| Numărul 16(2019) / 2019 / ISSN 1434-1948 /ISSNe 1099-0682 | ||||||
|
||||||
| DOI:https://doi.org/10.1002/ejic.201900175 | ||||||
| Pag. 2236-2244 | ||||||
|
||||||
| Vezi articolul | ||||||
| Rezumat | ||||||
Two families of charge-neutral heterometallic Fe-4f coordination compounds comprising isobutyrate and amino alcoholate linkers were found to form exclusively upon ultrasonication irradiation. Under one-pot conditions, the trinuclear precursor [Fe 3 O(O 2 CCHMe 2 ) 6 (H 2 O) 3 ](NO 3 )·2(MeCN)·2(H 2 O) reacts with Ln(NO 3 ) 3 ·xH 2 O or Y(NO 3 ) 3 ·6H 2 O, N-butyldiethanolamine (bdeaH 2 ) and NaN 3 in methanol to yield the decanuclear clusters [Fe 6 M 4 (O 2 CCHMe 2 ) 8 (N 3 ) 2 (bdea) 10 ]·n(solvent) (M III = Y (1a·3MeOH), Gd (2a·2.5MeOH), Dy (3a·3.5MeOH·0.5H 2 O), Tb (4a·2MeOH), Ho (5a·2MeOH), as well as subsequently the hexanuclear compounds [Fe 4 M 2 (OH) 2 (O 2 CCHMe 2 ) 6 (N 3 ) 2 (bdea) 4 ]·2(solvent) (M III = Y (1b·2MeOH), Gd (2b·2MeOH), Dy (3b·2MeOH, 3c·2EtOH), Tb (4b·2MeOH), Er (6b·2MeOH), Tm (7b·2MeOH)). The {Fe 6 M 4} clusters feature a wheel-shaped architecture with the metal ions, interlinked by carboxylate and polyalcoholamine bridges, forming a saddle-like ring. The hexanuclear {Fe 4 M 2} clusters comprise two {Fe 2 M} triangles, connected via two bridging µ 3 -OH – groups, which form a condensed core of metals additionally linked by deprotonated tripodal bdeaH 2 ligands and bridging carboxylates. Magnetic measurements revealed predominant strong antiferromagnetic interactions within compounds 1–7 and out-of-phase signals for {Fe 6 Dy 4} (3a·3.5MeOH·0.5H 2 O), {Fe 6 Tb 4} (4a·2MeOH), and {Fe 4 Dy 2} (3b·2MeOH). |
||||||
| Cuvinte-cheie Carboxylate ligands, iron, lanthanides, magnetic properties, Structure elucidation, Synthesis design |
||||||
|
|
|
|
