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Magnetochemistry
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Magnetic Coordination Compounds and More... a Long and Successful Story:...
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Magnetic Coordination Compounds and More... a Long and Successful Story: A Tribute to M. Julve and F. Lloret

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

Deadline for manuscript submissions: 31 January 2025 | Viewed by 4375

Special Issue Editors

Prof. Dr. Carlos J. Gómez García

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Guest Editor
Department of Inorganic Chemistry, Faculty of Chemistry, University of Valencia, C/Dr. Moliner 50, 46100 Burjasot, Valencia, Spain
Interests: molecular magnetism; coordination magnetic polymers; magnetic MOFs; magnetic polyoxometalates; conducting magnetic materials; multifunctional magnetic materials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Salah-Eddine Stiriba

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Guest Editor
Instituto de Ciencia Molecular/ICMol, Universidad de Valencia, C/Catedrático José Beltrán 2, 46980 Valencia, Spain
Interests: computational chemistry; organic chemistry; polymer organics; hyperbranched polymers; dendrimers; supramolecular chemistry; homogenous catalysis; sustainable chemistry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Friends and Colleagues,

It is with great sadness that we inform you that Miguel passed away on Tuesday, July 9, 2024. This is an immense loss for his family as well as for all of us. Miguel, a distinguished faculty member of the Department of Inorganic Chemistry at the University of Valencia, was loved and respected throughout the research community. Though we will all miss our great friend and colleague, we can take comfort in the fact that he went peacefully.

Requiescat in peace, Miguel

Carlos Gomez and Salah-Eddine Stiriba

As you may know, our friends and colleagues Prof. Miguel Julve and Prof. Francesc Lloret, from the Universidad de Valencia, will be retired (never completely, of course) this academic year 2023/24.

To pay tribute to their long and fruitful scientific careers, we have decided to edit a Special Issue (to appear also as a printed volume) in the journal Magnetochemistry entitled “Magnetic Coordination Compounds and more... a long and successful story: A Tribute to M. Julve and F. Lloret” and we would like to invite you to send a contribution in the form of reviews, mini-reviews, feature articles or original research article for this Special Issue.

Although you can send a contribution at your convenience, we propose an initial deadline of 1 November 2024, to have the Special Issue ready by the end of 2024, the year of their (partial) retirement.

If you are interested in sending a contribution, please send us a tentative title and the type of contribution you would like to submit for this Magnetochemistry Special Issue.

We count with your valuable contribution to pay tribute to the scientific and personal career of our friends Miguel and Paco.

Prof. Dr. Carlos J. Gómez García
Prof. Dr. Salah-Eddine Stiriba
Guest Editors

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 chemitry
  • magnetochemistry
  • magnetic properties
  • single-molecule magnets
  • magnetic metal–organic frameworks

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Published Papers (6 papers)

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Research

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16 pages, 5155 KiB  
Article
Mesoxalate-Bridged Heptanuclear Copper(II) Complexes: Structure and Magnetic Properties
by Beatriz Gil-Hernández, Simon Millan, Irina Gruber, Christoph Janiak, Carlos J. Gómez-García and Joaquín Sanchiz
Magnetochemistry 2024, 10(12), 93; https://doi.org/10.3390/magnetochemistry10120093 - 22 Nov 2024
Viewed by 97
Abstract
Two new compounds, (NH4)4[Cu7(Hmesox)6(H2O)8]∙10H2O (1) and [Ru(bpy)3]4[Cu7(Hmesox)6Cl2]Cl2∙2CH3CN∙12H2O (2), were [...] Read more.
Two new compounds, (NH4)4[Cu7(Hmesox)6(H2O)8]∙10H2O (1) and [Ru(bpy)3]4[Cu7(Hmesox)6Cl2]Cl2∙2CH3CN∙12H2O (2), were prepared and their structures were solved by single-crystal X-ray diffraction (mesoxalic acid = dihydroxypropanedioic acid, H4mesox). The triply deprotonated mesoxalate anion acts as a chelating and bridging ligand with its carboxylate and alkoxide groups, forming the anionic heptanuclear copper(II) clusters [Cu7(Hmesox)6(H2O)8]4− and [Cu7(Hmesox)6Cl2]6− in 1 and 2, respectively. Variable temperature magnetic studies revealed antiferromagnetic interactions in 1 and the coexistence of ferro and antiferromagnetic interactions in 2. The [Ru(bpy)3]2+ cations provided luminescent properties to compound 2. Full article
(This article belongs to the Special Issue Magnetic Coordination Compounds and More... a Long and Successful Story: A Tribute to M. Julve and F. Lloret)
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12 pages, 2875 KiB  
Article
Two New 2p–3d Metal Complexes with a Nitronyl-Nitroxide Ligand Derived from o-Vanillin: Synthesis, Crystals Structures and Magnetic Properties
by Cristian Andrei Spinu, Daniel O. T. A. Martins, Teodora Mocanu, Mihaela Hillebrand, Jean-Pascal Sutter, Floriana Tuna and Marius Andruh
Magnetochemistry 2024, 10(11), 86; https://doi.org/10.3390/magnetochemistry10110086 - 1 Nov 2024
Viewed by 774
Abstract
Two new 2p–3d complexes, (Et3NH)[ML(hfac)2], have been obtained using the nitronyl-nitroxide radical (HL) derived from 2-hydroxy-3-methoxy-5-nitrobenzaldehyde (M = Mn 1; Co 2). The two compounds are isomorphous and their structures consist of anionic mononuclear species, [M(hfac)2 [...] Read more.
Two new 2p–3d complexes, (Et3NH)[ML(hfac)2], have been obtained using the nitronyl-nitroxide radical (HL) derived from 2-hydroxy-3-methoxy-5-nitrobenzaldehyde (M = Mn 1; Co 2). The two compounds are isomorphous and their structures consist of anionic mononuclear species, [M(hfac)2L]−, M = Mn 1; Co 2, and triethylammonium cations, Et3NH+. The metal ions adopt an octahedral geometry, being coordinated by phenoxido and aminoxyl oxygen atoms from the ligand and four oxygen atoms from the hexafluoroacetylacetonato (hfac−) ligand. The cryomagnetic behaviors of the two compounds reveal relatively strong antiferromagnetic M(II)-Rad interactions (JMnRad = −191 cm−1, JCoRad = −166 cm−1 with H = −JSMSRad). The EPR spectra (X- and Q-band) of compound 1 below 70 K show the characteristical features of a S = 2 spin system with zero field splitting terms of D = 0.26 cm−1 and E = 0.031 cm−1. Full article
(This article belongs to the Special Issue Magnetic Coordination Compounds and More... a Long and Successful Story: A Tribute to M. Julve and F. Lloret)
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13 pages, 2979 KiB  
Article
[MnIII6MnIINaI2], [MnIII3MnIINaI], and [MnIII3] Clusters Derived from Schiff Bases: Syntheses, Structures, and Magnetic Properties
by Johannes Löhr, Mercè Font-Bardia, Júlia Mayans and Albert Escuer
Magnetochemistry 2024, 10(10), 76; https://doi.org/10.3390/magnetochemistry10100076 - 10 Oct 2024
Viewed by 612
Abstract
The reaction of manganese halides with polydentate Schiff bases obtained by the condensation of 3-ethoxysalicylaldehyde and different amino alcohols, resulting in a NO3 set of donors, yielded a series of manganese clusters with {MnIII6MnIINa2}, {Mn [...] Read more.
The reaction of manganese halides with polydentate Schiff bases obtained by the condensation of 3-ethoxysalicylaldehyde and different amino alcohols, resulting in a NO3 set of donors, yielded a series of manganese clusters with {MnIII6MnIINa2}, {MnIII3MnIINa}, and {MnIII3} metallic cores. The influence of the ligand substituents and the halide on the final nuclearity has been studied. Analysis of their static magnetic behaviour confirms the ground states of 19/2 for the {MnIII6MnIINa2} complexes, 7/2 for the {MnIII3MnIINa} clusters, and 12/2 for the triangular {MnIII3} systems, and a weak field induced a slow relaxation of the magnetization for the trinuclear complexes. Full article
(This article belongs to the Special Issue Magnetic Coordination Compounds and More... a Long and Successful Story: A Tribute to M. Julve and F. Lloret)
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22 pages, 4862 KiB  
Article
Theoretical Hints to Optimize Energy Dissipation and Cell–Cell Response in Quantum Cellular Automata Based on Tetrameric and Bidimeric Cells
by Andrew Palii, Shmuel Zilberg and Boris Tsukerblat
Magnetochemistry 2024, 10(10), 73; https://doi.org/10.3390/magnetochemistry10100073 - 30 Sep 2024
Viewed by 555
Abstract
This article is largely oriented towards the theoretical foundations of the rational design of molecular cells for quantum cellular automata (QCA) devices with optimized properties. We apply the vibronic approach to the analysis of the two key properties of such molecular cells, namely [...] Read more.
This article is largely oriented towards the theoretical foundations of the rational design of molecular cells for quantum cellular automata (QCA) devices with optimized properties. We apply the vibronic approach to the analysis of the two key properties of such molecular cells, namely the cell–cell response and energy dissipation in the course of the non-adiabatic switching of the electric field acting on the cell. We consider two kinds of square planar cells, namely cells represented by a two-electron tetrameric mixed valence (MV) cluster and bidimeric cells composed of two one-electron MV dimeric half-cells. The model includes vibronic coupling of the excess electrons with the breathing modes of the redox sites, electron transfer, intracell interelectronic Coulomb repulsion, and also the interaction of the cell with the electric field of polarized neighboring cells. For both kinds of cells, the heat release is shown to be minimal in the case of strong delocalization of excess electrons (weak vibronic coupling and/or strong electron transfer) exposed to a weak electric field. On the other hand, such a parametric regime proves to be incompatible with a strong nonlinear cell–cell response. To reach a compromise between low energy dissipation and a strong cell–cell response, we suggest using weakly interacting MV molecules with weak electron delocalization as cells. From this point of view, bidimeric cells are advantageous over tetrameric ones due to their smaller number of electron transfer pathways, resulting in a lower extent of electron delocalization. The distinct features of bidimeric cells, such as their two possible mutual arrangements (“side-by-side” and “head-to-tail”), are discussed as well. Finally, we briefly discuss some relevant results from a recent ab initio study on electron transfer and vibronic coupling from the perspective of the possibility of controlling the key parameters of molecular QCA cells. Full article
(This article belongs to the Special Issue Magnetic Coordination Compounds and More... a Long and Successful Story: A Tribute to M. Julve and F. Lloret)
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21 pages, 4971 KiB  
Article
Manganese (III) Compounds Derived from R-Salicylaldoxime and 9-Anthracenecarboxylate Ligands: A Study of Their Synthesis and Structural, Magnetic, and Luminescent Properties
by Berta Casanovas, Ramon Vicente, Mercè Font-Bardía and Mohamed Salah El Fallah
Magnetochemistry 2024, 10(8), 55; https://doi.org/10.3390/magnetochemistry10080055 - 5 Aug 2024
Viewed by 904
Abstract
The reaction of Mn(II) salts in the air with different R-salicylaldehyde oximes and the sodium or cesium salts of 9-anthracenecarboxylato (9-AC) allows for the isolation of new six polynuclear compounds: [Mn3NaO(salox)3(9-AC)2(EtOH)3H2O]n·2EtOH [...] Read more.
The reaction of Mn(II) salts in the air with different R-salicylaldehyde oximes and the sodium or cesium salts of 9-anthracenecarboxylato (9-AC) allows for the isolation of new six polynuclear compounds: [Mn3NaO(salox)3(9-AC)2(EtOH)3H2O]n·2EtOH (1), [Mn3NaO(3-Me-salox)3(9-AC)2(EtOH)3H2O]n·EtOH (2), [Mn6O2(salox)6(9-AC)2(EtOH)2(H2O)2]·3EtOH (3), [Mn3O(3-Me-salox)3(9-AC)(EtOH)3(H2O)]·1.8EtOH·3H2O (4), [Mn6O2(Me-salox)6(9-AC)2(EtOH)4(H2O)2]·0.5H2O (5), and [Mn6O2(Et-salox)6(9-AC)2(EtOH)4(H2O)2]·3EtOH (6). H2salox is a salicylaldehyde oxime, H2(3-Me-salox) is a 3-methyl-salicylaldehyde oxime, H2Me-salox is a 1-(2-hydroxyphenyl)ethan-1-one oxime and a H2-Et-salox is 1-(2-hydroxyphenyl)propan-1-one oxime. Structurally, compounds 1 and 2 consist of chains of trinuclear {MnIII3(μ3-O)(salox)3}+ units connected by Na+ ions. Compounds 3, 5, and 6 are hexanuclear units formed by two parallel trinuclear units {MnIII3(μ3-O)(salox)3}+ or {MnIII3(μ3-O)(Me-salox)3}+ planes related through an inversion center. Compound 4 consists of two isolated [Mn3O(3-Me-salox)3(9-AC)(EtOH)3(H2O)] trinuclear molecules in the unit cell showing crystallographic differences. Magnetic studies reveal a set of antiferromagnetic interactions in compounds 1 and 2 and a combination of antiferromagnetic and ferromagnetic interactions in compounds 3, 5, and 6. In all cases, the magneto-structural correlation between the intramolecular MnIII-N-O-MnIII torsion angle and the magnetic exchange within these units have been confirmed. For compounds 5 and 6, ac magnetic measurements reveal the slow relaxation of magnetization with moderate energy barriers of 19.9 cm−1 and 31.1 cm−1, respectively. Absorbance and fluorescence measurements in solution show the transitions of the 9-anthracenecarboxylate chromophore for all the compounds. Full article
(This article belongs to the Special Issue Magnetic Coordination Compounds and More... a Long and Successful Story: A Tribute to M. Julve and F. Lloret)
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Review

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23 pages, 1964 KiB  
Review
Recent Insights into Magneto-Structural Properties of Co(II) Dicyanamide Coordination Compounds
by Anna Świtlicka
Magnetochemistry 2024, 10(11), 90; https://doi.org/10.3390/magnetochemistry10110090 - 18 Nov 2024
Viewed by 314
Abstract
In recent decades, the chemistry of transition metal coordination compounds has undergone continuous development at both scientific and application levels. The diversity of metal(II) complexes, along with their structural features and physicochemical properties, makes them attractive for a wide range of applications. The [...] Read more.
In recent decades, the chemistry of transition metal coordination compounds has undergone continuous development at both scientific and application levels. The diversity of metal(II) complexes, along with their structural features and physicochemical properties, makes them attractive for a wide range of applications. The dicyanamide ion (N(CN)2) has the ability to form various transition metal compounds characterized by different architectures and topologies. The interaction of π-electrons from the nitrile groups with the π-system of the central nitrogen may enable electron delocalization, potentially facilitating electron transfer between the metal centers through the bridging dicyanamide (dca) ligand. This review focuses on dca–Co(II) compounds and, after a brief introduction, the structural aspects and magnetic properties are analyzed in detail. Full article
(This article belongs to the Special Issue Magnetic Coordination Compounds and More... a Long and Successful Story: A Tribute to M. Julve and F. Lloret)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Exploring Spin-Crossover Cobalt(II) Single-Ion Magnets: Advancements and Prospects in Molecular Spintronics and Quantum Computing Technologies
Authors: Salah Stiriba; Joan Cano Boquera; Rafael Ruiz García
Affiliation: Universitat de València, Valencia, Spain

Title: Controlled Zn(II) to Co(II) Transmetallation in a Metal-Organic Framework Inducing Single Ion Magnet Behaviour
Authors: Emilio Pardo Marín; Jesús Ferrando Soria
Affiliation: University of Valencia, Valencia, Spain

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