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• W2037963531 startingPage "57" @default.
• W2037963531 abstract "A new bis(phenol)dimethyltetraazamacrocycle, 1,8-bis(2-hydroxy-3,5-di-tert-butylbenzyl)-4,11dimethyl-1,4,8,11-tetraazacyclotetradecane (H2{( tBu2 PhO)2Me2Cyclam}) (1), is described. Deprotonation of 1 with sodium or potassium hydrides afforded Na2{( tBu2 PhO)2Me2Cyclam} (2) and K2{( tBu2 PhO) Me2Cyclam} (3), respectively. Reactions of 2 or 3 with yttrium or lanthanide trichlorides led to the formation of neutral rare earth metal complexes of general formula [{( tBu2 PhO)2Me2Cyclam}LnCl] (Ln ¼ Y (4), La (5), Sm (6), Yb (7)) in moderate to high yields. The molecular structures of 4e7 were determined by single-crystal X-ray diffraction analysis and reveal that the ligand’s denticity depends on the size of the metal ions. The smaller Y 3þ and Yb 3þ lead to distorted octahedral geometries where the dianionic ligand acts as pentadentate, while the larger ions, La 3þ and Sm 3þ , form capped trigonal prismatic complexes with the cyclam derivative acting as a hexadentate chelator." @default.
• W2037963531 created "2016-06-24" @default.
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• W2037963531 creator A5063791827 @default.
• W2037963531 creator A5071921723 @default.
• W2037963531 date "2013-03-01" @default.
• W2037963531 modified "2023-09-26" @default.
• W2037963531 title "Rare earth metal complexes anchored on a new dianionic bis(phenolate)dimethylamineCyclam ligand" @default.
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• W2037963531 doi "https://doi.org/10.1016/j.jorganchem.2012.12.026" @default.
• W2037963531 hasPublicationYear "2013" @default.
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