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A Detailed Study of the Magnetism of Chiral {Cr7M} Rings: An Investigation into Parametrization and Transferability of Parameters
- Source :
- Journal of the American Chemical Society. 136:9763-9772
- Publication Year :
- 2014
- Publisher :
- American Chemical Society (ACS), 2014.
-
Abstract
- Compounds of general formula [Cr7MF3(Etglu)(O2C(t)Bu)15(Phpy)] [H5Etglu = N-ethyl-d-glucamine; Phpy = 4-phenylpyridine; M = Zn (1), Mn (2), Ni (3)] have been prepared. The structures contain an irregular octagon of metal sites formed around the penta-deprotonated Etglu(5-) ligand; the chirality of N-ethyl-d-glucamine is retained in the final product. The seven Cr(III) sites have a range of coordination environments, and the divalent metal site is crystallographically identified and has a Phpy ligand attached to it. By using complementary experimental techniques, including magnetization and specific heat measurements, inelastic neutron scattering, and electron paramagnetic resonance spectroscopy, we have investigated the magnetic features of this family of {Cr7M} rings. Microscopic parameters of the spin Hamiltonian have been determined as a result of best fits of the different experimental data, allowing a direct comparison with corresponding parameters found in the parent compounds. We examine whether these parameters can be transferred between compounds and compare them with those of an earlier family of heterometallic rings.
- Subjects :
- structural
physical and magnetic characterization
Magnetism
Chemistry
Ligand
Transferability
General Chemistry
Biochemistry
Catalysis
Inelastic neutron scattering
molecular nanomagnets
Metal
Crystallography
Magnetization
Colloid and Surface Chemistry
visual_art
visual_art.visual_art_medium
structural, physical and magnetic characterization
Chirality (chemistry)
Parametrization
Subjects
Details
- ISSN :
- 15205126 and 00027863
- Volume :
- 136
- Database :
- OpenAIRE
- Journal :
- Journal of the American Chemical Society
- Accession number :
- edsair.doi.dedup.....73f6d8f49ab0a1501572440a0396394e