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Exclusive Feature Papers in Inorganic Chemistry, 3rd Edition
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Exclusive Feature Papers in Inorganic Chemistry, 3rd Edition

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Inorganic Chemistry".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 1721

Special Issue Editors

Dr. Andrea Bencini

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Guest Editor
Department of Chemistry, University of Florence, Via della Lastruccia, 3-13, Sesto Fiorentino, 50019 Firenze, Italy
Interests: synthetic inorganic chemistry; coordination chemistry; polyamine ligands; anion coordination; supramolecular chemistry; toxic metals and anions
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Vito Lippolis

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Guest Editor
Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Cagliari, Italy
Interests: coordination chemistry; macrocyclic receptors; optical chemosensors; halogen and chalcogen bonding; interaction of chalcogen donors with dihalogens
Special Issues, Collections and Topics in MDPI journals
Dr. Matteo Savastano

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Guest Editor
Department of Human Sciences for the Promotion of Quality of Life, University San Raffaele Roma, Via di Val Cannuta 247, 00166 Rome, Italy
Interests: supramolecular chemistry; coordination chemistry; solution equilibria; anion coordination chemistry; polyiodides
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

It is our pleasure to announce a new Special Issue entitled “Exclusive Feature Papers in Inorganic Chemistry, 3rd Edition”. This is a collection of important high-quality papers (original research articles or comprehensive review papers) published in open access format by Editorial Board Members or prominent scholars invited by the Editorial Office and the Guest Editors. This Special Issue aims to discuss new knowledge or new cutting-edge developments in the inorganic chemistry research field through selected works, in the hope of making a great contribution to the community. We intend for this Special Issue to be a forum for disseminating excellent research findings as well as sharing innovative ideas in the field.

Dr. Andrea Bencini
Prof. Dr. Vito Lippolis
Dr. Matteo Savastano
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. Molecules is an international peer-reviewed open access semimonthly 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 2700 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
  • metal complexes
  • metal-based assemblies
  • inorganic anions
  • inorganic materials
  • coordination polymers
  • functional materials
  • chemosensors

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Related Special Issue

Published Papers (4 papers)

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Research

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12 pages, 2023 KiB  
Article
Oligonuclear Manganese Complexes with Multiple Redox Properties for High-Contrast Electrochromism
by Yi-Ting Wu, Hao-Tian Deng, Li-Yi Zhang, Meng-Die Li, Feng-Rong Dai and Zhong-Ning Chen
Molecules 2025, 30(9), 2054; https://doi.org/10.3390/molecules30092054 - 5 May 2025
Viewed by 203
Abstract
This study is dedicated to the design of multiple redox-active oligonuclear manganese complexes supported with a bis(tetradentate) ligand (TPDP = 1,3-bis(bis(2-pyridinylmethyl)amino)-2-propanol) for high-contrast electrochromism based on the reversible redox process between Mn(II) (colorless) and Mn(III) (dark brown). Pentanuclear Mn5 complex 1 (colorless) [...] Read more.
This study is dedicated to the design of multiple redox-active oligonuclear manganese complexes supported with a bis(tetradentate) ligand (TPDP = 1,3-bis(bis(2-pyridinylmethyl)amino)-2-propanol) for high-contrast electrochromism based on the reversible redox process between Mn(II) (colorless) and Mn(III) (dark brown). Pentanuclear Mn5 complex 1 (colorless) was synthesized via a one-pot reaction of Mn2+ and TPDP, while tetranuclear Mn4 complex 2 (brown) was obtained through aerial oxidation of complex 1. Mn5 complex 1 features a central MnCl6 unit connected to two Mn2(μ-TPDP) fragments through μ3-Cl− and μ-Cl−, whereas Mn4 complex 2 adopts a symmetric tetranuclear structure with two mixed-valence Mn2II,III(μ-TPDP)(μ-Cl) fragments that are further linked by μ-oxo. Electrochemical studies revealed multi-step reversible redox properties for both complexes, attributed to MnII/MnIII processes with significant electronic coupling (ΔE1/2 = 0.27–0.37 V) between Mn centers. Spectroelectrochemical analysis revealed dynamic optical modulation through the tunable d-d transition and ligand-to-metal charge transfer (LMCT) state through reversible multiple redox processes based on Mn(II) ⇆ Mn(III) interconversion. The fabricated electrochromic device (ECD) exhibited reversible and high optical contrast between the colored state (dark brown) and the bleaching state (colorless). The results highlight the potential of polynuclear manganese complexes as high-contrast electrochromic materials for next-generation smart windows and adaptive optical technologies. Full article
(This article belongs to the Special Issue Exclusive Feature Papers in Inorganic Chemistry, 3rd Edition)
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19 pages, 11765 KiB  
Article
Synthesis, Structural Characterization, and Hydrogen Release of Al-Based Amidoboranes Derived from MAlH4 (Li, Na)-BH3NH2CH2CH2NH2BH3
by Ting Zhang, Xiao Li, Hai-Wen Li, Michel Devillers and Yaroslav Filinchuk
Molecules 2025, 30(7), 1559; https://doi.org/10.3390/molecules30071559 - 31 Mar 2025
Viewed by 254
Abstract
Over the past two decades, the high hydrogen content and favorable dehydrogenation conditions of multi-metallic amidoboranes have gained significant attention for their potential in hydrogen storage. Among them, Al-based complex hydrides have shown promise because of their high polarizing power, light weight, and [...] Read more.
Over the past two decades, the high hydrogen content and favorable dehydrogenation conditions of multi-metallic amidoboranes have gained significant attention for their potential in hydrogen storage. Among them, Al-based complex hydrides have shown promise because of their high polarizing power, light weight, and abundant natural presence. In this work, we successfully synthesized two novel tetrahedrally coordinated Al-based amidoboranes, namely, Li[Al(BH3NHCH2CH2NHBH3)2] and Na(THF)[Al(BH3NHCH2CH2NHBH3)2], using BH3NH2CH2CH2NH2BH3 (EDAB) as a precursor. The structure of Na(THF)[Al(BH3NHCH2CH2NHBH3)2] was determined through modeling based on synchrotron powder X-ray diffraction. Additionally, the formation of the Al-N bond in Li[Al(BH3NHCH2CH2NHBH3)2] and Na(THF)[Al(BH3NHCH2CH2NHBH3)2] was confirmed with IR spectra. Na(THF)[Al(BH3NHCH2CH2NHBH3)2] is more stable in air than Li[Al(BH3NHCH2CH2NHBH3)2]. Importantly, thermal gravimetric analysis and mass spectroscopic characterization confirmed that both compounds release hydrogen without the presence of ammonia, diborane, or ethylenediamine. Our work represents the first example of Al-based amidoboranes with chelation coordination geometry, which provides an essential foundation for understanding the relationship of complex multi-metallic amidoboranes in terms of synthesis, structure, and properties. Full article
(This article belongs to the Special Issue Exclusive Feature Papers in Inorganic Chemistry, 3rd Edition)
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24 pages, 2813 KiB  
Article
Axial Ligand Effects on the Mechanism of Ru-CO Bond Photodissociation and Photophysical Properties of Ru(II)-Salen PhotoCORMs/Theranostics: A Density Functional Theory Study
by Niq Catevas and Athanassios Tsipis
Molecules 2025, 30(5), 1147; https://doi.org/10.3390/molecules30051147 - 3 Mar 2025
Viewed by 657
Abstract
Density functional theory (DFT) calculations were employed to study a series of complexes of general formula [Ru(salen)(X)(CO)]0/−1 (X = Cl−, F−, SCN−, DMSO, Phosphabenzene, Phosphole, TPH, CN−, N3−, NO3− [...] Read more.
Density functional theory (DFT) calculations were employed to study a series of complexes of general formula [Ru(salen)(X)(CO)]0/−1 (X = Cl−, F−, SCN−, DMSO, Phosphabenzene, Phosphole, TPH, CN−, N3−, NO3−, CNH−, NHC, P(OH)3, PF3, PH3). The effect of ligands X on the Ru-CO bond was quantified by the trans-philicity, Δσ13C NMR parameter. The potential of Δσ13C to be used as a probe of the CO photodissociation by Ru(II) transition metal complexes is established upon comparing it with other trans-effect parameters. An excellent linear correlation is found between the energy barrier for the Ru-CO photodissociation and the Δσ13C parameter, paving the way for studying photoCORMs with the 13C NMR method. The strongest trans-effect on the Ru-CO bond in the [Ru(salen)(X)(CO)]0/−1 complexes are found when X = CNH−, NHC, and P(OH)3, while the weakest for X = Cl−, NO3− and DMSO trans-axial ligands. The Ru-CO bonding properties were scrutinized using Natural Bond Orbital (NBO), Natural Energy Decomposition Analysis (NEDA) and Natural Orbital of Chemical Valence (NOCV) methods. The nature of the Ru-CO bond is composite, i.e., electrostatic, covalent and charge transfer. Both donation and backdonation between CO ligand and Ru metal centre equally stabilize the Ru(II) complexes. Ru-CO photodissociation proceeds via a 3MC triplet excited state, exhibiting a conical intersection with the T1 3MLCT excited state. Calculations show that these complexes show bands within visible while they are expected to be red emitters. Therefore, the [Ru(salen)(X)(CO)]0/−1 complexes under study could potentially be used for dual action, photoCORMs and theranostics compounds. Full article
(This article belongs to the Special Issue Exclusive Feature Papers in Inorganic Chemistry, 3rd Edition)
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Review

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18 pages, 5022 KiB  
Review
Searching for New Gold(I)-Based Complexes as Anticancer and/or Antiviral Agents
by Paola Checconi, Annaluisa Mariconda, Alessia Catalano, Jessica Ceramella, Michele Pellegrino, Stefano Aquaro, Maria Stefania Sinicropi and Pasquale Longo
Molecules 2025, 30(8), 1726; https://doi.org/10.3390/molecules30081726 - 11 Apr 2025
Viewed by 323
Abstract
Approaches capable of simultaneously treating cancer and protecting susceptible patients from lethal infections are highly desirable, although they prove challenging. Taking inspiration from the well-known anticancer platinum complexes, successive studies about the complexation of organic compounds with other late transition metals, such as [...] Read more.
Approaches capable of simultaneously treating cancer and protecting susceptible patients from lethal infections are highly desirable, although they prove challenging. Taking inspiration from the well-known anticancer platinum complexes, successive studies about the complexation of organic compounds with other late transition metals, such as silver, gold, palladium, rhodium, ruthenium, iridium, and osmium, have led to remarkable anticancer activities. Among the numerous chemical moieties studied, N-heterocyclic carbenes (NHCs) have revealed very attractive activities due to their favorable chemical properties. Specifically, gold–NHC complexes emerged as some of the most active complexes acting as antitumor agents. On the other hand, some recent studies have highlighted the involvement of these complexes in antiviral research as well. The well-known gold-based, orally available complex auranofin approved by the Food and Drug Administration (FDA) for the treatment of rheumatoid arthritis has been suggested as a repositioned drug for both cancer and viral infections. In the era of the COVID-19 pandemic, the most interesting goal could be the discovery of gold–NHC complexes as dual antiviral and anticancer agents. In this review, the most recent studies regarding the anticancer and antiviral activities of gold(I)–NHC complexes will be analyzed and discussed, offering an interesting insight into the research in this field. Full article
(This article belongs to the Special Issue Exclusive Feature Papers in Inorganic Chemistry, 3rd Edition)
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