The magnetic interaction between the total angular momentum () of the 4f electrons in a lanthanide ion and the orbital angular momentum () of a porphyrin in the photo-excited states of 5,10,15,20-tetraphenylporphyrinato Dy(III) complexes capped with a crown ether with one of two different symmetries, 12-crown-4 or 1-aza-12-crown-4, was investigated by temperature- and magnetic dependent magnetic circular dichroism (VT-VH MCD). The analysis was conducted on the complexes with different non-aromatic ligands to investigate how different symmetries of the non-aromatic ligands have an impact on the electronic interaction causing an anti-parallel orientation of and . The magnitude of the - interaction was determined from simulation-based fitting to experimental ratios. While in both cases an antiferromagnetic-type interaction between and was identified, an asymmetric non-aromatic ligand resulted in an increased magnitude of the - interaction.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d3dt02842a | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Tuning of the antiferromagnetic-type interaction in photo-excited single-decker porphyrin-lanthanide complexes with different crown capping ligands.
Dalton Trans
January 2024
Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
The magnetic interaction between the total angular momentum () of the 4f electrons in a lanthanide ion and the orbital angular momentum () of a porphyrin in the photo-excited states of 5,10,15,20-tetraphenylporphyrinato Dy(III) complexes capped with a crown ether with one of two different symmetries, 12-crown-4 or 1-aza-12-crown-4, was investigated by temperature- and magnetic dependent magnetic circular dichroism (VT-VH MCD). The analysis was conducted on the complexes with different non-aromatic ligands to investigate how different symmetries of the non-aromatic ligands have an impact on the electronic interaction causing an anti-parallel orientation of and . The magnitude of the - interaction was determined from simulation-based fitting to experimental ratios.
View Article and Find Full Text PDFMagnetocaloric effect and magnetic ordering in GdFeTSi, T = Cr, V, Ni.
Phys Chem Chem Phys
June 2023
M. N. Mikheev Institute of Metal Physics UB RAS, 620108 Ekaterinburg, Russia.
The intermetallic compounds GdFeCrSi, = 0-0.8, GdFeVSi, = 0-0.4, and GdFeNiSi, = 0-0.
View Article and Find Full Text PDFEffect of B-Site Order-Disorder in the Structure and Magnetism of the New Perovskite Family LaMnB'O with B' = Ti, Zr, and Hf.
Inorg Chem
April 2021
INFIQC (CONICET-Universidad Nacional de Córdoba), Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre esq. Medina Allende, Ciudad Universitaria, X5000HUA Córdoba, Argentina.
In this work, we report the synthesis as well as the structural and magnetic characterization of the three perovskites LaMnB'O (B' = Ti, Zr, and Hf). Interestingly, only LaMnTiO crystallizes in the monoclinic double perovskite space group 2/, with a complete rocksalt order of the B-site cations, whereas LaMnZrO and LaMnHfO crystallize in the orthorhombic simple perovskite space group , with complete disorder in the B site. Moreover, the magnetic susceptibility at low temperatures shows clear antiferromagnetic transitions below 10 K for the three compounds, but only the Ti-based perovskite has long-range magnetic ordering.
View Article and Find Full Text PDFLow-Dimensional Magnetic Semimetal CrAlSe.
Inorg Chem
October 2019
Department of Chemistry , Louisiana State University, Baton Rouge , Louisiana 70803 , United States.
While exploring novel magnetic semiconductors, the new phase CrAlSe was discovered and characterized by both structural and physical properties. CrAlSe was found to crystallize into orthorhombic CrGeTe-type structure with space group (no. 62).
View Article and Find Full Text PDFChannel-Assisted Proton Conduction Behavior in Hydroxyl-Rich Lanthanide-Based Magnetic Metal-Organic Frameworks.
Inorg Chem
May 2017
Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462 066, India.
Two new lanthanide-based 3D metal-organic frameworks (MOFs), {[Ln(L)(Ox)(HO)]·xHO} [Ln = Gd and x = 3 (1) and Dy and x = 1.5 (2); HL = mucic acid; OxH = oxalic acid] showing interesting magnetic properties and channel-mediated proton conduction behavior, are presented here. Single-crystal X-ray structure analysis shows that, in complex 1, the overall structure originates from the mucate-bridged gadolinium-based rectangular metallocycles.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!