Issue 19, 2015

Two mononuclear single molecule magnets derived from dysprosium(iii) and tmphen (tmphen = 3,4,7,8-tetramethyl-1,10-phenanthroline)

Abstract

Two mononuclear Dy(III) complexes, [DyIII(hfac)3(tmphen)] (1) and [DyIII(acac)3(tmphen)]ยท2H2O (2) (tmphen = 3,4,7,8-tetramethyl-1,10-phenanthroline, hfac = hexafluoroacetylacetone, acac = acetylacetone) have been synthesized and structurally characterized by single crystal X-ray diffraction. Magnetic properties indicate that both of the complexes exhibit SMM behavior, and complex 1 is the first typical derivative of phenanthroline containing D2d-Dy(III) based mononuclear single molecule magnets. The energy barrier (Ueff/kB) of complex 2 (130.42 K) is much higher than that of complex 1 (35.09 K), indicating that the local symmetry of Dy(III) ions (D2d for 1, D4d for 2) plays an important role in magnetic behaviors.

Graphical abstract: Two mononuclear single molecule magnets derived from dysprosium(iii) and tmphen (tmphen = 3,4,7,8-tetramethyl-1,10-phenanthroline)

Supplementary files

Article information

Article type
Paper
Submitted
03 Mar 2015
Accepted
04 Apr 2015
First published
17 Apr 2015

Dalton Trans., 2015,44, 9020-9026

Two mononuclear single molecule magnets derived from dysprosium(III) and tmphen (tmphen = 3,4,7,8-tetramethyl-1,10-phenanthroline)

Y. Tong, C. Gao, Q. Wang, B. Wang, S. Gao, P. Cheng and D. Liao, Dalton Trans., 2015, 44, 9020 DOI: 10.1039/C5DT00869G

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