A new family of heterometallic [Cu 6 M 4 ] (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 ) and 2-hydroxymethyl-2-(2-pyridyl)-1,3-propane-diol (pyptH ) in Cu /4f chemistry has afforded a new family of isostructural [Cu M (pypt) (pypdH) (NO ) ] [M = Gd (1), Tb (2), Dy (3), and Y (4)] complexes. These compounds are based on an unpre...

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Published inDalton transactions : an international journal of inorganic chemistry Vol. 53; no. 39; pp. 16202 - 16211
Main Authors Anastassiades, Antonis, Alexandropoulos, Dimitris I, Buch, Christian D, Piligkos, Stergios, Tasiopoulos, Anastasios J
Format Journal Article
LanguageEnglish
Published England Royal Society of Chemistry 08.10.2024
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 ) and 2-hydroxymethyl-2-(2-pyridyl)-1,3-propane-diol (pyptH ) in Cu /4f chemistry has afforded a new family of isostructural [Cu M (pypt) (pypdH) (NO ) ] [M = Gd (1), Tb (2), Dy (3), and Y (4)] complexes. These compounds are based on an unprecedented three-layered symmetric [Cu M (μ-OR) ] 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.
ISSN:1477-9226
1477-9234
DOI:10.1039/d4dt02054e