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Magneto-Structural Correlations in Pseudotetrahedral Forms of the [Co(SPh)4]2– Complex Probed by Magnetometry, MCD Spectroscopy, Advanced EPR Techniques, and ab Initio Electronic Structure Calculations
- Source :
- Inorganic Chemistry. 56:3102-3118
- Publication Year :
- 2017
- Publisher :
- American Chemical Society (ACS), 2017.
-
Abstract
- The magnetic properties of pseudotetrahedral Co(II) complexes spawned intense interest after (PPh4)2[Co(SPh)4] was shown to be the first mononuclear transition-metal complex displaying slow relaxation of the magnetization in the absence of a direct current magnetic field. However, there are differing reports on its fundamental magnetic spin Hamiltonian (SH) parameters, which arise from inherent experimental challenges in detecting large zero-field splittings. There are also remarkable changes in the SH parameters of [Co(SPh)4]2– upon structural variations, depending on the counterion and crystallization conditions. In this work, four complementary experimental techniques are utilized to unambiguously determine the SH parameters for two different salts of [Co(SPh)4]2–: (PPh4)2[Co(SPh)4] (1) and (NEt4)2[Co(SPh)4] (2). The characterization methods employed include multifield SQUID magnetometry, high-field/high-frequency electron paramagnetic resonance (HF-EPR), variable-field variable-temperature magnetic ci...
- Subjects :
- 010405 organic chemistry
Magnetometer
Chemistry
Ab initio
Electronic structure
010402 general chemistry
01 natural sciences
0104 chemical sciences
law.invention
Magnetic field
Spin magnetic moment
Inorganic Chemistry
Crystallography
Magnetization
Computational chemistry
law
Physical and Theoretical Chemistry
Spectroscopy
Electron paramagnetic resonance
Subjects
Details
- ISSN :
- 1520510X and 00201669
- Volume :
- 56
- Database :
- OpenAIRE
- Journal :
- Inorganic Chemistry
- Accession number :
- edsair.doi...........38494be5fa48572c853b2cd5e7cb82c6