Current Reviews and Perspectives in Molecular Magnetism

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

Deadline for manuscript submissions: 31 December 2025 | Viewed by 4926

Special Issue Editor


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Guest Editor
1. Laboratory of Inorganic Chemistry, Faculty of Chemistry, University of Bucharest, Bd. Regina Elisabeta nr. 4-12, Bucharest, Romania
2. "C. D. Nenitzescu" Institute of Organic and Supramolecular Chemistry of the Romanian Academy, Splaiul Independentei 202 B, Bucharest, Romania
Interests: molecular magnetism; crystal engineering; metallosupramolecular chemistry; homo- and hetero-polynuclear complexes
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Special Issue Information

Dear Colleagues,

Since the discovery of the first single-molecule magnet (1993) and the first single-chain magnet (2001), the investigation of the slow relaxation of the magnetization phenomena has become a field of intensive interdisciplinary research. Beyond their relevance in Physics and Chemistry, one expects spectacular applications in quantum computing and high-density information storage from these molecules. In the last twenty years or so, the search for compounds with high energy barriers to magnetization reversal (high blocking temperatures) has stimulated the development of very rich coordination chemistry. A huge number of mono- and oligo-nuclear complexes, 1D coordination polymers, and homo- and hetero-spin systems have been synthesized, and the investigation of their dynamic magnetic properties has revealed the determinants that influence the relaxation phenomena. The subtle factors that influence magnetic anisotropy are more fully and better understood. This understanding further serves as a guide for the design of new and better-performing SMMs and SCMs. An important step towards applications was achieved by organizing SMMs on surfaces.

Therefore, we believe that a collection of Review Articles and Perspectives presenting the state of the art and future trends in this exciting field will be useful for researchers as well as for students. There are many attractive aspects to be presented, from chemical, physical, to theoretical perspectives.

Prof. Dr. Marius Andruh
Guest Editor

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Keywords

  • single-molecule magnets
  • single-chain magnets
  • magnetic anisotropy
  • synthetic approaches towards slow relaxation molecules

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Published Papers (2 papers)

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Review

21 pages, 4757 KiB  
Review
Magnetic Switchability via Thermal-Induced Structural Phase Transitions in Molecular Solids
by Shan-Nan Du, Chan-Ying Yao, Jun-Liang Liu and Ming-Liang Tong
Magnetochemistry 2023, 9(3), 80; https://doi.org/10.3390/magnetochemistry9030080 - 9 Mar 2023
Cited by 2 | Viewed by 2850
Abstract
Magnetically switchable molecular solids with stimuli-responsive ON/OFF characteristics are promising candidates for smart switches and magnetic storage. In addition to conventional spin-crossover/charge-transfer materials whose magnetic responses arise from changes in the electronic structure of the metal centers, peripheral chemical entities that exhibit tunability [...] Read more.
Magnetically switchable molecular solids with stimuli-responsive ON/OFF characteristics are promising candidates for smart switches and magnetic storage. In addition to conventional spin-crossover/charge-transfer materials whose magnetic responses arise from changes in the electronic structure of the metal centers, peripheral chemical entities that exhibit tunability provide an alternative and promising tactic for the construction of magnetic multi-stable materials. Temperature changes can trigger a reversible structural phase transition that can affect the coordination environment of a transition-metal center because of the thermal-induced motion of ligands, counterions, neutral guests, and/or changes in coordination number, thus potentially realizing magnetic bistability which can arise from a concomitant spin state change or the modulation of orbital angular momentum. Perspectives and challenges are also highlighted to provide insights into its development. Full article
(This article belongs to the Special Issue Current Reviews and Perspectives in Molecular Magnetism)
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30 pages, 13276 KiB  
Review
Application of the Heptacyanidorhenate(IV) as a Metalloligand in the Design of Molecular Magnets
by Kira E. Vostrikova
Magnetochemistry 2022, 8(12), 189; https://doi.org/10.3390/magnetochemistry8120189 - 14 Dec 2022
Cited by 2 | Viewed by 1769
Abstract
This review is devoted to an analysis of currently known heterometallic molecular magnets based on an orbitally degenerate 5d metalloligand, [ReIV(CN)7]3−. Heptacyanidometallates with a pentagonal bipyramidal structure of the coordination site and degenerate ground spin state [...] Read more.
This review is devoted to an analysis of currently known heterometallic molecular magnets based on an orbitally degenerate 5d metalloligand, [ReIV(CN)7]3−. Heptacyanidometallates with a pentagonal bipyramidal structure of the coordination site and degenerate ground spin state are the source of anisotropic magnetic exchange interactions upon the formation of cyanide-bonded assemblies involving the paramagnetic complexes of the first transition series. Therefore, the development of methods for chemical design using such molecular magnetic modules is extremely important. If for the 4d congener, isoelectronic [MoIII(CN)7]3−, a family of approximately 40 heterometallic compounds, was obtained, whereas for heptacyanorhenate(IV), no more than 20 are known. However, as a result of recent studies, heterobimetallic magnetic assemblies of all dimensionalities have been synthesized, from 0D to 1D, demonstrating slow magnetization relaxation, to 2D networks and 3D frameworks possessing large magnetic hysteresis. The most anisotropic is a 2D network, PPN[{MnIII(acacen)}2ReIV(CN)7]·Solv, with a critical temperature of 20 K and magnetic hysteresis with a record coercivity for cyanide-bridged molecular materials. Full article
(This article belongs to the Special Issue Current Reviews and Perspectives in Molecular Magnetism)
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