Abstract

Three isostructural 1D lanthanoid complexes with the general formula {[Ln2(DTE)(H-DTE)(MeOH)2]·2H2O}n (Ln = Tb, Dy, and Yb; DTE = 1,2-bis(5-carboxyl-2-methyl-3-thienyl) perfluorocyclopentene) were synthesized. In the 1D chain structure of each complex, lanthanide ions are seven coordinate with a capped trigonal prism geometry. The 1,2-bis(5-carboxyl-2-methyl-3-thienyl) perfluorocyclopentene (DTE) ligand adopts a parallel configuration in these complexes, which results in the loss of the photo-isomerization ability of the ligand. From magnetic measurements, each complex undergoes slow relaxation of the magnetization via multiple processes in a dc field.

Highlights

  • Single-molecule magnets (SMMs) which retain magnetization for long periods of time in the absence of an external magnetic field are being investigated vigorously these days for potential applications in a variety of fields, including molecular spintronics [1,2], data storage devices [3], and quantum computing [4,5]

  • Lanthanide based SMMs have large single-ion magnetic anisotropies, and the energy splitting of the ground state of lanthanide ions is affected by the crystal field surrounding the ion [6]

  • Slight modification of the crystal field can generate a significant change in the ground state splitting, which will affect the magnetic anisotropy of the ion and influence the SMM behavior

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Summary

Introduction

Single-molecule magnets (SMMs) which retain magnetization for long periods of time in the absence of an external magnetic field are being investigated vigorously these days for potential applications in a variety of fields, including molecular spintronics [1,2], data storage devices [3], and quantum computing [4,5]. Slight modification of the crystal field can generate a significant change in the ground state splitting, which will affect the magnetic anisotropy of the ion and influence the SMM behavior. AAllll ooff tthhee ccoommpplleexxeess wweerree ssyynntthheessiizzeedd bbyy uussiinngg aa ssiimmiillaarr pprroocceedduurree..

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