A new family of heterometallic [CuM] (M = Gd, Tb, Dy and Y) clusters derived from the combined use of selected pyridyl poly-alcohol ligands

The combined use of 2-(2-pyridyl)-1,3-propane-diol (pypdH 2 ) and 2-hydroxymethyl-2-(2-pyridyl)-1,3-propane-diol (pyptH 3 ) in Cu 2+ /4f chemistry has afforded a new family of isostructural [Cu 6 M 4 (pypt) 4 (pypdH) 4 (NO 3 ) 8 ] [M = Gd ( 1 ), Tb ( 2 ), Dy ( 3 ), and Y ( 4 )] complexes. These comp...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2024-10, Vol.53 (39), p.1622-16211
Main Authors: Anastassiades, Antonis, Alexandropoulos, Dimitris I, Buch, Christian D, Piligkos, Stergios, Tasiopoulos, Anastasios J
Format: Article
Language:English
Subjects:
Direct current
Dysprosium
Ferromagnetism
Gadolinium
Ligands
Magnetic induction
Magnetic permeability
Magnetic relaxation
Propane
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Summary:The combined use of 2-(2-pyridyl)-1,3-propane-diol (pypdH 2 ) and 2-hydroxymethyl-2-(2-pyridyl)-1,3-propane-diol (pyptH 3 ) in Cu 2+ /4f chemistry has afforded a new family of isostructural [Cu 6 M 4 (pypt) 4 (pypdH) 4 (NO 3 ) 8 ] [M = Gd ( 1 ), Tb ( 2 ), Dy ( 3 ), and Y ( 4 )] complexes. These compounds are based on an unprecedented three-layered symmetric [Cu 6 M 4 (μ-OR) 16 ] 8+ structural core, formed from the connection of the metal ions by bridging alkoxide arms of the organic ligands. Direct current magnetic susceptibility studies for complexes 1-3 revealed the presence of dominant ferromagnetic exchange interactions, suggesting the existence of large spin ground state values. Alternating current magnetic studies indicate the presence of slow-magnetic relaxation in 1-3 . Heterometallic [Cu 6 M 4 ] (M = Gd, Tb, Dy, Y) complexes with a unique three-layered [Cu 6 M 4 (μ-OR) 16 ] 8+ core are reported. Magnetism studies revealed dominant ferromagnetic exchange interactions and a spin ground state value S = 17 for the Gd-analogue.
ISSN:1477-9226
1477-9234
DOI:10.1039/d4dt02054e