Latest Research on the Magnetic Properties of Coordination Compounds

A special issue of Magnetochemistry (ISSN 2312-7481).

Deadline for manuscript submissions: 30 June 2025 | Viewed by 3540

Special Issue Editor


E-Mail Website
Guest Editor
Departament de Química Inorgànica i Orgànica, Secció Inorgànica and Institute of Nanoscience (IN2UB) and Nanotecnology, Universitat de Barcelona, Marti i Franques 1-11, 08028 Barcelona, Spain
Interests: chemistry; coordination chemistry; molecular magnetism

Special Issue Information

Dear Colleagues,

The magnetic properties of coordination compounds have been a topic of interest for several decades, starting with the study of the magnetostructural correlations and then advancing to the discovery of fascinating properties associated with the magnetic properties of the coordination compounds. Thanks to this new discipline in coordination chemistry, these kind of systems have emerged as possible building blocks for different applications like information storage, spintronics or qubits, instead of their classical counterparts (bits).

This Special Issue of Magnetochemistry aims to publish a collection of research contributions illustrating the recent achievements in all aspects of the development, study and understanding of the magnetic properties of coordination compounds and their applications, focusing on the topics listed below.

Dr. Julia Mayans
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

  • coordination chemistry
  • magnetic materials
  • slow relaxation of magnetization
  • magnetic refrigerants
  • SMMs/SIMs

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • e-Book format: Special Issues with more than 10 articles can be published as dedicated e-books, ensuring wide and rapid dissemination.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (4 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

25 pages, 6174 KiB  
Article
Copper(II)-Promoted Reactions of α-Pyridoin Oxime: A Dodecanuclear Cluster and a 2D Coordination Polymer
by Konstantina H. Baka, Luís Cunha-Silva, Catherine P. Raptopoulou, Vassilis Psycharis, Dionissios Papaioannou, Mark M. Turnbull, Zoi G. Lada, Spyros P. Perlepes and Theocharis C. Stamatatos
Magnetochemistry 2025, 11(4), 35; https://doi.org/10.3390/magnetochemistry11040035 - 18 Apr 2025
Viewed by 148
Abstract
The reaction of CuCl2∙2H2O, (E)-2-hydroxy-1,2-di(pyridin-2-yl)ethanone oxime (α-pyroxH2) and Et3N in refluxing MeOH gave complex [Cu12Cl12(mpydol)4(pydox)2(MeOH)4] (1), where mpydol2− is the [...] Read more.
The reaction of CuCl2∙2H2O, (E)-2-hydroxy-1,2-di(pyridin-2-yl)ethanone oxime (α-pyroxH2) and Et3N in refluxing MeOH gave complex [Cu12Cl12(mpydol)4(pydox)2(MeOH)4] (1), where mpydol2− is the dianion of 1,2-dimethoxy-1,2-di(pyridin-2-yl)ethane-1,2-diol and pydox2− is the dianion of (E,E)-1,2-di(pyridin-2-yl)ethanedione dioxime. “Blind” experiments have proven that the transformation of α-pyroxH2 is copper(II)-assisted. By changing the solvent from MeOH to MeCN, the polymeric compound {[Cu4Cl4(pic)4]}n (2) was isolated; pic is the pyridine-2-carboxylato(-1) ligand. The observed α-pyroxH2 → pic transformation is also copper(II)-assisted. The topology of the metal ions in 1 can be described as consisting of four consecutive isosceles triangles in a zigzag configuration. Complex 2 is a 2D coordination polymer consisting of CuII4 squares. Complete mechanistic views for the α-pyroxH2 → mpydol2−, pydox2− and pic transformations are critically discussed. In 1, the six CuII ions of the “central” triangles seem to be strongly antiferromagnetically coupled, thus cancelling out their spins (SCu6 = 0). The two local spins of S = 1/2 for each of the antiferromagnetically coupled “terminal” CuII3 triangles result in an overall S = 1 ground state spin value for 1. In 2, the four CuII ions within each tetrameric unit are practically isolated and ferromagnetic interactions occur between these units through CuII–(μ-Cl)–CuII bridges. Full article
(This article belongs to the Special Issue Latest Research on the Magnetic Properties of Coordination Compounds)
Show Figures

Figure 1

14 pages, 5032 KiB  
Article
Er(III) and Yb(III) Complexes with a Tripodal Nitroxyl Radical: Magnetochemical Study and Ab Initio Calculations
by Mauro Perfetti, Alexey A. Dmitriev and Kira E. Vostrikova
Magnetochemistry 2025, 11(2), 16; https://doi.org/10.3390/magnetochemistry11020016 - 14 Feb 2025
Viewed by 554
Abstract
In this paper, we investigate the magnetic exchange interaction and magnetization dynamics of two new members of the [LnRad(NO3)3] family, where Rad is a tripodal nitroxide, and Ln is Er(III) or Yb(III), having the prolate type electron density. Single [...] Read more.
In this paper, we investigate the magnetic exchange interaction and magnetization dynamics of two new members of the [LnRad(NO3)3] family, where Rad is a tripodal nitroxide, and Ln is Er(III) or Yb(III), having the prolate type electron density. Single OK crystal and powder X-ray diffraction studies showed that these complexes are isostructural with their previously investigated Y, Gd, Dy, Tm, Tb, Eu, and Lu congeners. A magnetometric investigation, supported by ab initio calculations, showed the presence of antiferromagnetic coupling between the lanthanide ion and the radical in both compounds with estimated J values of ≈7 and ≈20 cm−1 for Er and Yb, respectively (+J SeffS formalism). Full article
(This article belongs to the Special Issue Latest Research on the Magnetic Properties of Coordination Compounds)
Show Figures

Figure 1

15 pages, 3973 KiB  
Article
Exploring the Potential of Oxalyldihydrazide-Derived Schiff Bases as Versatile Ligands: Synthesis, Structural Characterization, and Magnetic Properties
by Ernesto Costa-Villén, Marina Ortiz, Pedro Sitjar, Cristina Puigjaner and Mohamed Salah El Fallah
Magnetochemistry 2025, 11(1), 4; https://doi.org/10.3390/magnetochemistry11010004 - 13 Jan 2025
Viewed by 807
Abstract
Schiff bases constitute a broad and well-established class of ligands widely utilized in coordination chemistry. To further enrich this family and assess the potential impact of oxalyldihydrazide-derived Schiff bases in the realms of coordination chemistry and molecular magnetism, three novel ligands have been [...] Read more.
Schiff bases constitute a broad and well-established class of ligands widely utilized in coordination chemistry. To further enrich this family and assess the potential impact of oxalyldihydrazide-derived Schiff bases in the realms of coordination chemistry and molecular magnetism, three novel ligands have been synthesized and investigated. i.e., N′1,N′2-bis((E)-pyridin-2-ylmethylene)oxalohydrazide (H2L1), N′1-((E)-(3-methylpyridin-2-yl)methylene)-N′2-((E)-(6-methylpyridin-2-yl)methylene)oxalohydrazide (H2L2) and N′1,N′2-bis((E)-phenyl(pyridin-2-yl)methylene)oxalohydrazide (H2L3) were synthesized and then combined with various 3d metals, resulting in the formation of five new complexes with formula [Cu5(L1)2(H2O)8(MeOH)2(NO3)2](NO3)4 (1), [Mn2(HL2)2(BzO)2(MeOH)2]·2MeOH (2), [Ni(HL2)2]·2MeOH (3), [Ni4(L2)4]·4MeOH (4), [Ni8(L3)4(AcO)4(H2O)12](OAc)4 (5). These compounds were structurally and magnetically characterized, revealing the various coordination modes exhibited by the ligands and a distinct antiferromagnetic behavior. Alternating current (AC) susceptibility measurements were conducted on complex 1, showing no evidence of Single Molecule Magnet (SMM) behavior. Full article
(This article belongs to the Special Issue Latest Research on the Magnetic Properties of Coordination Compounds)
Show Figures

Graphical abstract

24 pages, 6897 KiB  
Article
Tetradentate NOO′O″ Schiff-Base Ligands as a Platform for the Synthesis of Heterometallic CdII-FeIII and CdII-CrIII Coordination Clusters
by Konstantinos N. Pantelis, Sotiris G. Skiadas, Zoi G. Lada, Catherine P. Raptopoulou, Vassilis Psycharis, Yiannis Sanakis, Mark M. Turnbull and Spyros P. Perlepes
Magnetochemistry 2024, 10(10), 69; https://doi.org/10.3390/magnetochemistry10100069 - 27 Sep 2024
Viewed by 1262
Abstract
The chemistry of heterometallic metal complexes continues to attract the interest of molecular inorganic chemists mainly because of the properties that different metal ions can bring to compounds. Contrary to the plethora of 3d–4f- and 3d–3d′-metal complexes, complexes containing both 3d- and 4d-metal [...] Read more.
The chemistry of heterometallic metal complexes continues to attract the interest of molecular inorganic chemists mainly because of the properties that different metal ions can bring to compounds. Contrary to the plethora of 3d–4f- and 3d–3d′-metal complexes, complexes containing both 3d- and 4d-metal ions are much less studied. The choice of the bridging organic ligand is of paramount importance for the synthesis of such species. In the present work, we describe the use of the potentially tetradentate NOO′O″ Schiff bases N-(2-carboxyphenyl)salicylideneimine (saphHCOOH) and N-(4-chloro-carboxyphenyl)salicylideneimine (4ClsaphHCOOH) in CdII-MIII (M = Fe, Cr) chemistry. The complexes [Cd2Fe2(saphCOO)4(NO3)2(H2O)2] (1), [Cd2Cr2(saphCOO)4(NO3)2(H2O)2] (2), [Cd2Fe2(4ClsaphCOO)4(NO3)2(H2O)2] (3) and [CdCr2(4ClsaphCOO)4(H2O)3(EtOH)] (4) have been structurally characterized, the quality of the structure of the latter being poor but, permitting the knowledge of the connectivity and the main structural features. Complexes 13 are isostructural, but not isomorphous, possessing a variety of lattice solvent molecules (EtOH, MeCN, CH2Cl2, H2O). The metal topology can be described as two isosceles triangles sharing a common CdII…CdII edge. The two CdII atoms are doubly bridged by two μ-aqua groups. The MIII…CdII sides of the triangles are each asymmetrically bridged by one carboxylate oxygen atom of a 2.2111 saphCOO2−/4ClsaphCOO2− ligand. The core of the molecules is {Cd2M2(μ-Oaqua)2(μ-OR)4}6+, where the OR oxygen atoms are the bridging carboxylate oxygens. The coordination spheres of the metal ions in the centrosymmetric molecules are [Cd(Oaqua)2(Ocarboxylato)4(Onitrato)2] and [M(Nimino)2(Ocarboxylato)2(Ophenolato)2]. The biaugmented trigonal prism is the most appropriate for the description of the coordination geometry of the CdII atoms in 1 and 3, while the geometry of these metal ions in 2 is best described as distorted triangular dodecahedral. A combination of H-bonding and π–π stacking interactions give interesting supramolecular patterns in the three tetranuclear compounds. The three metal ions in 4 define an isosceles triangle with two almost equal CdII…CrIII sides. The CdII center is linked to each CrIII atom through one carboxylato oxygen of a 2.2111 4ClsaphCOO2− ligand. The core of the molecule is {CdCr2(μ-OR)2}6+, where the OR oxygen atoms are the bridging carboxylato oxygens. A tridentate chelating 1.1101 4ClsaphCOO2− ligand is bonded to each CrIII. The coordination spheres are [Cd(Oaqua)3(Oethanol)(Obridging carboxylato)2(Oterminal carboxylate)2] and [Cr(Obridging carboxylato)(Oterminal carboxylato)(Ophenolato)2(Nimino)2]. Complexes 14 are the first heterometallic 3d–4d complexes based on saphHCOOH and 4ClsaphCOOH. The structures are critically compared with those of previous reported ZnII-MIII (M = Fe, Cr) complexes. The IR and Raman spectra of the complexes are discussed in terms of the coordination modes of the ligands involved. UV/VIS spectra in CH2Cl2 are also reported, and the bands are assigned to the corresponding transitions. The δ and ΔEQ57Fe-Mössbauer parameters of 1 and 3 at room temperature and 80 K suggest the presence of isolated high-spin FeIII centers. Variable-temperature (1.8–310 K) and variable-field (0–50 kOe) magnetic studies for 1 and 2 indicate the absence of MIII…MIII exchange interactions, in agreement with the long distances (~8 Å) between the paramagnetic metal ions. The combined work demonstrates the ability of saphCOO2− and 4ClsaphCOO2− to give 3d–4d metal complexes. Full article
(This article belongs to the Special Issue Latest Research on the Magnetic Properties of Coordination Compounds)
Show Figures

Figure 1

Back to TopTop