An oxide-bridged Dy-ReV-Dy single-molecule magnet

Kasper Steen Pedersen, Jan Dreiser, Magnus Schau-Magnussen, Christian Aa Thuesen, Høgni Weihe, Jesper Bendix

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The reaction of diamagnetic trans-[ReV(O)2(py)4]NO3 with [Ln(hfac)3(H2O)2] (Ln = Dy, Y, Tb: hfac- = 1,1,1,5,5,5-hexafluoroacetylacetonate(1-)) in chloroform yields oxide-bridged, trinuclear [Ln(hfac)3(H2O)-Re(O)2(py)4-Ln(hfac)3(NO3)] (DyReDy, YReY, TbReTb). The series is isostructural to a fluoride-bridged {Dy-Cr-Dy} complex previously reported (Dreiser et al., Chem. Sci. 3 (2012) 1024) but, notably, DyReDy exhibits frequency-dependent out-of-phase ac susceptibility (χ'') signals at higher temperatures than the chromium analogue. Magnetic investigations of a solid solution of Dy3+ in YReY reveal the presence of a small Dy-Dy exchange interaction in DyReDy.
Original languageEnglish
JournalPolyhedron
Volume46
Issue number1
Pages (from-to)47-52
ISSN0277-5387
DOIs
Publication statusPublished - 2012
Externally publishedYes

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