Frequency-Domain Fourier-Transform Terahertz Spectroscopy of the Single-Molecule Magnet (NEt4)[Mn2(5-Brsalen)2(MeOH)2Cr(CN)6]

被引：49

作者：

Dreiser, Jan ^{[1
,2
]}

Schnegg, Alexander ^{[3
]}

Holldack, Karsten ^{[4
]}

Pedersen, Kasper S. ^{[5
]}

Schau-Magnussen, Magnus ^{[5
]}

Nehrkorn, Joscha ^{[2
]}

Tregenna-Piggott, Philip ^{[7
]}

Mutka, Hannu ^{[6
]}

Weihe, Hogni ^{[5
]}

Bendix, Jesper ^{[5
]}

Waldmann, Oliver ^{[2
]}

机构：

[1] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[2] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany

[3] Helmholtz Zentrum Mat & Energie, Inst Silizium Photovolta, D-12489 Berlin, Germany

[4] Helmholtz Zentrum Mat & Energie, Inst Methoden & Instrumente Forsch Synchrotronstr, D-12489 Berlin, Germany

[5] Univ Copenhagen, Dept Chem, DK-2100 Copenhagen, Denmark

[6] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France

[7] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2011年 / 17卷 / 27期

关键词：

chromium; EPR spectroscopy; inelastic neutron scattering; magnetic properties; manganese; HIGH-SPIN MOLECULES; (MN2MIII)-M-III(CN)(6) M; CRYSTAL-STRUCTURE; BUILDING-BLOCK; GROUND-STATE; MAGNETIZATION; COMPLEXES; CLUSTERS; ANISOTROPY; BARRIER;

D O I：

10.1002/chem.201100581

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have investigated the novel single-molecule magnet (NEt4)[Mn-2(5-Brsalen)(2)(MeOH)(2)Cr(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 synchro-tron 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)(2)Cr(CN)(6)] (2). Furthermore, two phonon lines in the vicinity of the magnetic excitations are detected.

引用

页码：7492 / 7498

页数：7

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