Calix[4]arene-Supported Mononuclear Lanthanide Single-Molecule Magnet
Authors:
- 19 December 2013
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 53 (1) , 562-567
Abstract
Three new single paramagnetic lanthanide-based complexes, [Ln(L)(LOEt)] (Ln3+ = Dy3+, Tb3+, and Ho3+), are synthesized with the multidentate calix[4]arene ligand H2L (H2L = 5,11,17,23-tetrakis(1,1-dimethylethyl)-25,27-dihydroxy-26,28-dimethoxycalix[4]arene) and Kläui’s tripodal ligand LOEt– (LOEt– = (η5-cyclopentadienyl)tris(diethylphosphito-p)cobaltate(III)). All of the complexes have been characterized by single crystal X-ray diffraction analysis, thermal stability, absorption spectra, and magnetization measurements. The magnetic properties and magnetostructural correlation in this seven-coordinated system are investigated. The dysprosium complex 1 shows typical single-molecule magnetic behavior with characteristic magnetic hysteresis loops and the slow relaxation of magnetization.Keywords
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