Hybrid molecular compound exhibiting slow magnetic relaxation and electrical conductivity

Yongbing Shen; Goulven Cosquer; Brian K. Breedlove; Masahiro Yamashita

doi:10.3390/magnetochemistry2040044

Hybrid molecular compound exhibiting slow magnetic relaxation and electrical conductivity

Yongbing Shen, Goulven Cosquer, Brian K. Breedlove, Masahiro Yamashita

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Electrochemical oxidation of a solution containing KDy(hfac)₄ (hfac, hexafluoroacetyacetone) and Bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) afforded a hybrid material formulated as [β^′-(BEDT-TTF)₂Dy(CF₃COO)₄·MeCN]_n. The complex crystallizes in the triclinic space group P1. The before mentioned complex has a chain structure containing 4f ions bridged by mono-anion CF₃COO⁻ ligand, and acts as single-molecule magnet (SMM) at low temperature. The conducting layer was composed of partially oxidized BEDT-TTF molecules in β^′ type arrangement. The presence of radical cation and its charge ordering was assigned on the basis of optical spectra. Electrical resistivity measurements revealed semiconducting behaviour (conductivity at room temperature of 1.1 × 10⁻³ S·cm⁻¹, activation energy of 158.5 meV) at ambient pressure.

Original language	English
Article number	44
Journal	Magnetochemistry
Volume	2
Issue number	4
DOIs	https://doi.org/10.3390/magnetochemistry2040044
Publication status	Published - 2016 Dec

Keywords

BEDT-TTF
Conductivity
Dysprosium
SMM

ASJC Scopus subject areas

Chemistry (miscellaneous)
Materials Chemistry
Electronic, Optical and Magnetic Materials

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10.3390/magnetochemistry2040044

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title = "Hybrid molecular compound exhibiting slow magnetic relaxation and electrical conductivity",

abstract = "Electrochemical oxidation of a solution containing KDy(hfac)4 (hfac, hexafluoroacetyacetone) and Bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) afforded a hybrid material formulated as [β′-(BEDT-TTF)2Dy(CF3COO)4·MeCN]n. The complex crystallizes in the triclinic space group P1. The before mentioned complex has a chain structure containing 4f ions bridged by mono-anion CF3COO− ligand, and acts as single-molecule magnet (SMM) at low temperature. The conducting layer was composed of partially oxidized BEDT-TTF molecules in β′ type arrangement. The presence of radical cation and its charge ordering was assigned on the basis of optical spectra. Electrical resistivity measurements revealed semiconducting behaviour (conductivity at room temperature of 1.1 × 10−3 S·cm−1, activation energy of 158.5 meV) at ambient pressure.",

keywords = "BEDT-TTF, Conductivity, Dysprosium, SMM",

author = "Yongbing Shen and Goulven Cosquer and Breedlove, {Brian K.} and Masahiro Yamashita",

note = "Funding Information: Acknowledgments: This work was financially supported by Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology (JST). Yoji Horii and Takefumi Yoshida are acknowledged for their help with the solid-state UV-Vis and polarized IR measurements. In addition, we express our acknowledgement to Hiroshi Ito from the Department of Applied Physics, Nagoya University, Nagoya, Japan and his co-worker for the measurement of the pressure and temperature dependence of the conductivity. Publisher Copyright: {\textcopyright} 2016 by the authors; licensee MDPI, Basel, Switzerland.",

year = "2016",

month = dec,

doi = "10.3390/magnetochemistry2040044",

language = "English",

volume = "2",

journal = "Magnetochemistry",

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AU - Shen, Yongbing

AU - Cosquer, Goulven

AU - Breedlove, Brian K.

AU - Yamashita, Masahiro

N1 - Funding Information: Acknowledgments: This work was financially supported by Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology (JST). Yoji Horii and Takefumi Yoshida are acknowledged for their help with the solid-state UV-Vis and polarized IR measurements. In addition, we express our acknowledgement to Hiroshi Ito from the Department of Applied Physics, Nagoya University, Nagoya, Japan and his co-worker for the measurement of the pressure and temperature dependence of the conductivity. Publisher Copyright: © 2016 by the authors; licensee MDPI, Basel, Switzerland.

PY - 2016/12

Y1 - 2016/12

N2 - Electrochemical oxidation of a solution containing KDy(hfac)4 (hfac, hexafluoroacetyacetone) and Bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) afforded a hybrid material formulated as [β′-(BEDT-TTF)2Dy(CF3COO)4·MeCN]n. The complex crystallizes in the triclinic space group P1. The before mentioned complex has a chain structure containing 4f ions bridged by mono-anion CF3COO− ligand, and acts as single-molecule magnet (SMM) at low temperature. The conducting layer was composed of partially oxidized BEDT-TTF molecules in β′ type arrangement. The presence of radical cation and its charge ordering was assigned on the basis of optical spectra. Electrical resistivity measurements revealed semiconducting behaviour (conductivity at room temperature of 1.1 × 10−3 S·cm−1, activation energy of 158.5 meV) at ambient pressure.

AB - Electrochemical oxidation of a solution containing KDy(hfac)4 (hfac, hexafluoroacetyacetone) and Bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) afforded a hybrid material formulated as [β′-(BEDT-TTF)2Dy(CF3COO)4·MeCN]n. The complex crystallizes in the triclinic space group P1. The before mentioned complex has a chain structure containing 4f ions bridged by mono-anion CF3COO− ligand, and acts as single-molecule magnet (SMM) at low temperature. The conducting layer was composed of partially oxidized BEDT-TTF molecules in β′ type arrangement. The presence of radical cation and its charge ordering was assigned on the basis of optical spectra. Electrical resistivity measurements revealed semiconducting behaviour (conductivity at room temperature of 1.1 × 10−3 S·cm−1, activation energy of 158.5 meV) at ambient pressure.

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Hybrid molecular compound exhibiting slow magnetic relaxation and electrical conductivity

Abstract

Keywords

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