Diketonate Lanthanide Complexes

College of Chemistry, Beijing Normal University, Beijing, 100875, RR. China. Email kzwang bnu.edu.cn 

Rare Earth Coordination Chemistry Fundamentals and Applications Edited by Chunhui Huang 2010 John Wiley Sons (Asia) Pte Ltd. ISBN 978-0-470-82485-6 

Although lanthanide emitters have the potential advantages of sharp emission bands, with high purities of colors ranging from blue to red, compared with fluorescent organic 

The next category of f)-diketones are 4-acyl-l-phenyl-3-methyl-5-pyrazolones (see Eigure 2.5) and their analogs of 3-phenyl-4-acyl-5-isoxazolones (see Eigure 2.6). The latter type of P-diketones have stronger acidities (lower pA a values) than the former, and have recently been smdied as promising light conversion molecular devices [46-51]. 

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Li and Huang et al. reported a series of dendrimer f)-diketonate lanthanide complexes and structurally characterized Tb(L )3(H20)2 [62], They confirmed that dendrimer f)-diketonate lanthanide complexes exhibited enhanced emission due to the light-harvesting antenna and shell effects. 

The synthetic flexibility of P-diketones has led to an explosion in the developments of related lanthanide complexes and their coordination chemistry. The [)-diketonate lanthanide complexes have been demonstrated to have variable coordination numbers ranging from six to ten, and diverse structural motifs. This family of complexes, having desirable luminescent properties... 

Shift Reagents. In 1970, Williams, elaborating on the preliminary work of Hinckley, discovered that adding trw-jS-diketonate lanthanide complexes to solutions of substances with lone pairs of electrons available for coordination (such as oxygen- and nitrogen-containing organic compounds) resulted in vastly more dispersed NMR spectra. This phenomenon, named lanthanide-induced shift (LIS), arises from the... 

Crystal Structural Studies of /8-Diketonate Lanthanide Complexes 253... 

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