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

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 -