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Heterometallic [Cu 2 Ln 3 ] (Ln = Dy III , Gd III and Ho III ) and [Cu 4 Ln 2 ] (Ln = Dy III and Ho III ) Compounds: Synthesis, Structure, and Magnetism
Author(s) -
Biswas Sourav,
Bag Prasenjit,
Das Sourav,
Kundu Subrata,
van Leusen Jan,
Kögerler Paul,
Chandrasekhar Vadapalli
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201601210
Subject(s) - chemistry , crystallography , deprotonation , metal , ligand (biochemistry) , lanthanide , molecule , ion , stereochemistry , inorganic chemistry , biochemistry , receptor , organic chemistry
The syntheses, structures, and magnetic properties of the penta‐ and hexanuclear 3d/4f complexes [Ln 3 Cu 2 (LH) 4 (MeOH)]ClO 4 [Ln = Dy III ( 1 ), Gd III ( 2 ), and Ho III ( 3 )] and [Ln 2 Cu 4 (LH) 4 ](ClO 4 ) 2 [Ln = Dy III ( 4 ) and Ho III ( 5 )] are reported. These complexes are assembled from the ligand 2,2′‐{2‐hydroxy‐3‐[(2‐hydroxyphenylimino)methyl]‐5‐methylbenzylazanediyl}diethanol (LH 4 ); four triply deprotonated ligands are involved in the formation of these complexes. In spite of the different nuclearities, some structural features are common. In both of the families, the metal ions are connected to each other by two bridging oxygen atoms, which emanate from either an ethoxide group or a phenolate group of [LH] 3– . Detailed magnetochemical analyses of 1 – 5 indicate that 1 and 5 display temperature‐dependent out‐of‐phase signals up to 12 K in the absence of a direct‐current (dc) field; therefore, these compounds are single‐molecule magnets.