Publication Date:
2015-12-10
Description:
Five rare earth heterospin complexes [ Ln (hfac) 3 (NIT pt BuPh) 2 ], [ Ln III = Eu ( 1 ), Tb ( 2 ), Dy ( 3 ), Ho ( 4 ), Er ( 5 )] (hfac = hexafluoroacetylacetonate), were synthesized with the radical ligand NIT pt BuPh [2-(4′- tert -butylphenyl)-4, 4,5, 5-tetramethylimidazoline-1-oxyl-3-oxide]. These complexes exhibit similar structures. All of them crystallize in the monoclinic space group P 2 1 / c , and consist of discrete mononuclear molecules. The central Ln III ion is eight-coordinate with a distorted dodecahedral environment. The NIT pt BuPh radical acts as monodentate ligand towards Ln III ion through the NO group. The magnetic studies suggested weak antiferromagnetic interactions between Ln III ion and radicals in 1 , 3 , 4 , and 5 , but weak ferromagnetic interaction in 2 .
Print ISSN:
0044-2313
Electronic ISSN:
1521-3749
Topics:
Chemistry and Pharmacology
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