Frequency-Domain Fourier-Transform Terahertz Spectroscopy of the Single-Molecule Magnet (NEt(4))[Mn(2)(5-Brsalen)(2)(MeOH)(2)Cr(CN)(6)]

Jan Dreiser; Alexander Schnegg; Karsten Holldack; Kasper Steen Pedersen; Magnus Schau-Magnussen; Joscha Nehrkorn; Philip Tregenna-Piggott; Hannu Mutka; Høgni Weihe; Jesper Bendix; Oliver Waldmann

Frequency-Domain Fourier-Transform Terahertz Spectroscopy of the Single-Molecule Magnet (NEt(4))[Mn(2)(5-Brsalen)(2)(MeOH)(2)Cr(CN)(6)]

Jan Dreiser, Alexander Schnegg, Karsten Holldack, Kasper Steen Pedersen, Magnus Schau-Magnussen, Joscha Nehrkorn, Philip Tregenna-Piggott, Hannu Mutka, Høgni Weihe, Jesper Bendix, Oliver Waldmann

Department of Chemistry

45 Citations (Scopus)

Abstract

We have investigated the novel single-molecule magnet (NEt ₄)[Mn₂(5-Brsalen)₂(MeOH)₂Cr(CN) ₆] (1; 5-Brsalen=N,N′-ethylenebis(5-bromosalicylidene)iminato anion) using spectroscopic as well as magnetization and susceptibility measurements. Frequency-domain Fourier-transform terahertz electron paramagnetic resonance (FDFT THz-EPR) based on the generation of THz radiation from a synchrotron in combination with inelastic neutron scattering (INS) allows for the discrimination between intermultiplet and intramultiplet transitions. Together with ac/dc magnetic susceptibility measurements the obtained set of data provides a complete characterization of the lowest energetic magnetic excitations. We find that the new compound 1 exhibits much weaker intermolecular interactions than found in the closely related compound: K[Mn ₂(5-Brsalen)₂(H₂O)₂Cr(CN) ₆] (2). Furthermore, two phonon lines in the vicinity of the magnetic excitations are detected.

Original language	English
Journal	Chemistry: A European Journal
Volume	17
Pages (from-to)	7492-7498
ISSN	0947-6539
Publication status	Published - 27 Jun 2011

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@article{c7c02a7482484d90a7a0d5acec64f7af,

title = "Frequency-Domain Fourier-Transform Terahertz Spectroscopy of the Single-Molecule Magnet (NEt(4))[Mn(2)(5-Brsalen)(2)(MeOH)(2)Cr(CN)(6)]",

abstract = "We have investigated the novel single-molecule magnet (NEt 4)[Mn2(5-Brsalen)2(MeOH)2Cr(CN) 6] (1; 5-Brsalen=N,N′-ethylenebis(5-bromosalicylidene)iminato anion) using spectroscopic as well as magnetization and susceptibility measurements. Frequency-domain Fourier-transform terahertz electron paramagnetic resonance (FDFT THz-EPR) based on the generation of THz radiation from a synchrotron in combination with inelastic neutron scattering (INS) allows for the discrimination between intermultiplet and intramultiplet transitions. Together with ac/dc magnetic susceptibility measurements the obtained set of data provides a complete characterization of the lowest energetic magnetic excitations. We find that the new compound 1 exhibits much weaker intermolecular interactions than found in the closely related compound: K[Mn 2(5-Brsalen)2(H2O)2Cr(CN) 6] (2). Furthermore, two phonon lines in the vicinity of the magnetic excitations are detected.",

author = "Jan Dreiser and Alexander Schnegg and Karsten Holldack and Pedersen, {Kasper Steen} and Magnus Schau-Magnussen and Joscha Nehrkorn and Philip Tregenna-Piggott and Hannu Mutka and H{\o}gni Weihe and Jesper Bendix and Oliver Waldmann",

year = "2011",

month = jun,

day = "27",

language = "English",

volume = "17",

pages = "7492--7498 ",

journal = "Chemistry: A European Journal",

issn = "0947-6539",

publisher = "Wiley - V C H Verlag GmbH & Co. KGaA",

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TY - JOUR

T1 - Frequency-Domain Fourier-Transform Terahertz Spectroscopy of the Single-Molecule Magnet (NEt(4))[Mn(2)(5-Brsalen)(2)(MeOH)(2)Cr(CN)(6)]

AU - Dreiser, Jan

AU - Schnegg, Alexander

AU - Holldack, Karsten

AU - Pedersen, Kasper Steen

AU - Schau-Magnussen, Magnus

AU - Nehrkorn, Joscha

AU - Tregenna-Piggott, Philip

AU - Mutka, Hannu

AU - Weihe, Høgni

AU - Bendix, Jesper

AU - Waldmann, Oliver

PY - 2011/6/27

Y1 - 2011/6/27

N2 - We have investigated the novel single-molecule magnet (NEt 4)[Mn2(5-Brsalen)2(MeOH)2Cr(CN) 6] (1; 5-Brsalen=N,N′-ethylenebis(5-bromosalicylidene)iminato anion) using spectroscopic as well as magnetization and susceptibility measurements. Frequency-domain Fourier-transform terahertz electron paramagnetic resonance (FDFT THz-EPR) based on the generation of THz radiation from a synchrotron in combination with inelastic neutron scattering (INS) allows for the discrimination between intermultiplet and intramultiplet transitions. Together with ac/dc magnetic susceptibility measurements the obtained set of data provides a complete characterization of the lowest energetic magnetic excitations. We find that the new compound 1 exhibits much weaker intermolecular interactions than found in the closely related compound: K[Mn 2(5-Brsalen)2(H2O)2Cr(CN) 6] (2). Furthermore, two phonon lines in the vicinity of the magnetic excitations are detected.

AB - We have investigated the novel single-molecule magnet (NEt 4)[Mn2(5-Brsalen)2(MeOH)2Cr(CN) 6] (1; 5-Brsalen=N,N′-ethylenebis(5-bromosalicylidene)iminato anion) using spectroscopic as well as magnetization and susceptibility measurements. Frequency-domain Fourier-transform terahertz electron paramagnetic resonance (FDFT THz-EPR) based on the generation of THz radiation from a synchrotron in combination with inelastic neutron scattering (INS) allows for the discrimination between intermultiplet and intramultiplet transitions. Together with ac/dc magnetic susceptibility measurements the obtained set of data provides a complete characterization of the lowest energetic magnetic excitations. We find that the new compound 1 exhibits much weaker intermolecular interactions than found in the closely related compound: K[Mn 2(5-Brsalen)2(H2O)2Cr(CN) 6] (2). Furthermore, two phonon lines in the vicinity of the magnetic excitations are detected.

M3 - Journal article

SN - 0947-6539

VL - 17

SP - 7492

EP - 7498

JO - Chemistry: A European Journal

JF - Chemistry: A European Journal

ER -

Frequency-Domain Fourier-Transform Terahertz Spectroscopy of the Single-Molecule Magnet (NEt(4))[Mn(2)(5-Brsalen)(2)(MeOH)(2)Cr(CN)(6)]

Abstract

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