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Magnetochemistry
Special Issues
Molecular Magnetism 2021: Paradigmatic Landmarks and Horizons
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Molecular Magnetism 2021: Paradigmatic Landmarks and Horizons

A special issue of Magnetochemistry (ISSN 2312-7481). This special issue belongs to the section "Magnetic Materials".

Deadline for manuscript submissions: closed (20 December 2021) | Viewed by 5480

Special Issue Editor

Dr. Marilena Ferbinteanu

E-Mail Website
Guest Editor
Inorganic Chemistry Department, Faculty of Chemistry, University of Bucharest, 020462 Bucharest, Romania
Interests: molecular magnetism; magnetic anisotropy; exchange coupling; coordination compound; ligand-field; structure-properties correlation; electronic structure modeling

Special Issue Information

Dear Colleagues,

Among the many article collections and journal issues dedicated to molecular magnetism, the present call should be distinguished as aiming at a critical overview reconstituting central paradigms of the domain. The proposed perspective is to regard molecular magnetism as the modern face of magnetochemistry, born about three decades ago, revisiting and enriching, from the prism of structure–property rational correlations, several principles which have been known to physicists for a very long time. The aim is to translate molecular magnetism into chemical language and intuitively examine the knowledge initially expressed in solid state terminology. To that end, coordination chemistry has already offered various valuable case studies, allowing a systematic check on the nature of ions, nuclearity, topology, geometry of the bridges, etc. Another key factor is the availability of modeling methods, along the computer revolution, with which the molecular magnetism has evolved symbiotically, rationalizing the structural causes of exchange coupling and magnetic anisotropy. We invite and await your original contributions to this domain.

Dr. Marilena Ferbinteanu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Magnetochemistry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Exchange coupling–bonding and magnetism
  • Magnetic anisotropy–interplay of ligand field and spin orbit effects
  • Spin states and spin crossover–imbrication of ligand field and interelectronic effects
  • Specifics of lanthanide magnetochemistry
  • Multifunctional molecule-based magnets
  • Slow relaxation of magnetization

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Published Papers (2 papers)

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Research

11 pages, 3399 KiB  
Article
Unexpected Light-Induced Thermal Hysteresis in Matrix Embedded Low Cooperative Spin Crossover Microparticles
by Diana Plesca, Anastasia Railean, Radu Tanasa, Alexandru Stancu, Jérôme Laisney, Marie-Laure Boillot and Cristian Enachescu
Magnetochemistry 2021, 7(5), 59; https://doi.org/10.3390/magnetochemistry7050059 - 29 Apr 2021
Cited by 1 | Viewed by 2160
Abstract
The embedding of spin-crossover micro- or nanocrystals in various surroundings dramatically changes their functionalities based on first-order spin transitions. The dampening of their internal cooperativity, together with introducing a new kind of interactions occurring at interfaces between spin-crossover particles and their environment, results [...] Read more.
The embedding of spin-crossover micro- or nanocrystals in various surroundings dramatically changes their functionalities based on first-order spin transitions. The dampening of their internal cooperativity, together with introducing a new kind of interactions occurring at interfaces between spin-crossover particles and their environment, results in spectacular effects, as an enhanced hysteresis with non-cooperative transitions. In this work, we deal with the influence of the embedding matrix on the light-induced thermal hysteresis (LITH) in the case of spin-crossover microparticles of Fe(phen)2(NCS)2. Despite the low cooperativity of this compound, the competition between the continuous photoexcitation towards the metastable high spin state and the relaxation down to low spin ground state leads to a light-induced thermal hysteresis, with a quasi-static width of around 10 K. This unexpected hysteresis is explained by considering a switch-on/cutoff mechanism of the particle–matrix interactions in the framework of a mean-field approach based on negative external pressures, with Gaussian distributed variations and of an Ising-like model with various interactions with the environment. Additional first-order reversal curves measurements and corresponding calculated distributions are in line with relaxations under light and confirm the existence of a non-kinetic LITH. Full article
(This article belongs to the Special Issue Molecular Magnetism 2021: Paradigmatic Landmarks and Horizons)
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12 pages, 4358 KiB  
Article
New Mononuclear Mn(III) Complexes with Hydroxyl-Substituted Hexadentate Schiff Base Ligands
by Peng-Yu Xu, Yu-Ting Wang, Zong-Mei Yu, Yong-Hua Li and Shi Wang
Magnetochemistry 2021, 7(1), 12; https://doi.org/10.3390/magnetochemistry7010012 - 13 Jan 2021
Cited by 3 | Viewed by 2629
Abstract
This paper reports the syntheses, crystal structures and magnetic properties of Mn(III) hexadentate Schiff base complexes [Mn(4-OH-sal-N-1,5,8,12)]NO3(1) and [Mn(4-OH-sal-N-1,5,8,12)]ClO4(2), where (4-OH-sal-N-1,5,8,12)2− (4,4′-((1E,13E)-2,6,9,13-tetraazatetradeca-1,13-diene-1,14-diyl)bis(3-methoxyphenol) is a new hydroxyl-substituted hexadentate Schiff base ligand. The introduction of the (4-OH-sal-N-1,5,8,12)2− ligand [...] Read more.
This paper reports the syntheses, crystal structures and magnetic properties of Mn(III) hexadentate Schiff base complexes [Mn(4-OH-sal-N-1,5,8,12)]NO3(1) and [Mn(4-OH-sal-N-1,5,8,12)]ClO4(2), where (4-OH-sal-N-1,5,8,12)2− (4,4′-((1E,13E)-2,6,9,13-tetraazatetradeca-1,13-diene-1,14-diyl)bis(3-methoxyphenol) is a new hydroxyl-substituted hexadentate Schiff base ligand. The introduction of the (4-OH-sal-N-1,5,8,12)2− ligand induces more hydrogen bonding interactions, in addition to promoting the formation of intermolecular interactions among the cations. However, the close-packing structures of both complexes lead to their stabilization in the high-spin state in the temperature range of 2−300 K. Full article
(This article belongs to the Special Issue Molecular Magnetism 2021: Paradigmatic Landmarks and Horizons)
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