Review
Chemistry, Multidisciplinary
Sha Bai, Ying-Feng Han
Summary: N-heterocyclic carbenes (NHCs) have led to breakthroughs in transition-metal catalysis, main group chemistry, and organocatalysis. However, the chemistry of NHC-based metallosupramolecular assemblies is underdeveloped. This Account summarizes the development and applications of M-NHC chemistry toward supramolecular synthesis, including structural design, postassembly modification (PAM), and functional applications. The M-NHC-templated approaches have proven to be powerful methods for constructing diverse architectures with functional applications. Rating: 9/10
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Review
Chemistry, Organic
Clement Ghiazza, Thierry Billard
Summary: Reagent design plays a crucial role in modern organofluorine chemistry, with a focus on introducing fluoroalkylthio or seleno groups efficiently and selectively. Among them, versatile fluoroalkyl thiosulfonates and selenosulfonates have been at the forefront of recent developments, showing rich chemical reactivity and wide applicability in various studies.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Noreldin S. Y. Abdolla, David L. Davies, Kuldip Singh
Summary: Six bidentate ligands containing PYE groups and their bis-cyclometallated Ir(III) complexes have been synthesized and fully characterized. NMR spectroscopy showed that complexes with a C6H4 bridging group have the fastest PYE rotation. X-ray crystallography indicated that the PYE N-donor is trigonal planar in para-substituted complexes and more pyramidalized in ortho-complexes, suggesting an increased contribution of the zwitterionic resonance form in the latter.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Zhenyou Li, Alexander Welle, Smobin Vincent, Liping Wang, Stefan Fuchs, Sibylle Riedel, Ananyo Roy, Dasari Bosubabu, Juan Maria Garcia-Lastra, Maximilian Fichtner, Zhirong Zhao-Karger
Summary: A doping strategy is implemented in Ketjenblack sulfur cathodes by introducing selenium to enhance charge transfer and sulfur utilization. The S-Se composite cathodes exhibit better performance compared to bare sulfur cathodes, with improved efficiency and higher capacity. The use of these cathodes also enables a more uniform anode reaction and longer cyclability by suppressing polysulfide dissolution.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Alejandro Portugues, Delia Bautista, Juan Gil-Rubio
Summary: New dinuclear gold complexes with fluoroalkyl bridging chains were synthesized, and the aurophilic interactions were found to play a crucial role in the complex structures and oxidation reactions. The study extends the understanding and synthesis possibilities of gold complexes.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Polymer Science
Jieni Hu, Chuanhao Sun, Siqi Li, Yuan Yuan, Yan Zhang
Summary: A facile one-step ring-closure methodology was established to obtain a novel macrocyclic tellurocarbonate series, which was further used to develop well-defined poly(telluride-carbonate)s through one-pot organocatalytic ring-opening polymerization. This work provides a strategy for utilizing heterotellurium macrocarbonates as feedstocks in polymer synthesis of degradable tellurium-containing materials.
Article
Chemistry, Multidisciplinary
Isha Mishra, Bhaskaran Shankar, Malaichamy Sathiyendiran
Summary: Three trinuclear rhenium-(I)-organic complexes with a triangular structure were synthesized via a one-pot approach. The complexes possess unique supramolecular tubular architecture.
CRYSTAL GROWTH & DESIGN
(2023)
Review
Chemistry, Inorganic & Nuclear
Roberta Cargnelutti, Ricardo F. Schumacher, Andrei L. Belladona, Jean C. Kazmierczak
Summary: This review provides an overview of pyridyl-selenium compounds and their metal complexes in the fields of pharmacology, material science, and technology, covering coordination chemistry, synthetic methodologies, and structural characterization. Relevant direct applications in nanomaterial preparation, organic synthesis catalysis, photocatalytic hydrogen production, and oxygen activation are also discussed.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Engineering, Environmental
B. Song, J. Weijma, C. J. N. Buisman, R. D. van der Weijden
Summary: This study investigates the interaction between biologically produced sulfur and selenium oxyanions during the bio-reduction process. The results show that the addition of biologically produced sulfur and sulfate promotes the bio-reduction of selenium oxyanions and accelerates the formation of hexagonal selenium. Hexagonal selenium is advantageous for separation and recovery and has lower mobility and toxicity compared to amorphous selenium.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Hanhua Xu, Ze-Jie Lv, Junnian Wei, Zhenfeng Xi
Summary: A N-aryloxide-amidine ligand (H3L) was synthesized from 2-(aminomethyl)-6-(tert-butyl)phenol in two steps, which integrates phenoxide and amidine ligands through methylene linkers. The coordination modes of the resulting complexes depend on the radius of the metal ions. The ligand can form a dimer (LMIV-Cl)2 with group 4 metal chloride (MCl4)-Cl-IV, and the coordination mode of the amidinate moiety can change from bidentate chelating to bimetallic bridging coordination.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Luong Phong Ho, Angelika Neitzel, Thomas Bannenberg, Matthias Tamm
Summary: In this study, a series of sulfur and selenium compounds with different metal complexes were synthesized through experimental and computational methods, revealing their bonding situation and properties.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Li Zhang, Boyang Li, Ran Li, Yue Wang, Sheng Ye, Peng Zhang, Biao Wu
Summary: This study presents a novel metal/anion-coordination co-driven strategy for the synthesis of nanoscale supramolecular metallocycles with unique topology and desired chirality. The enantiomeric Janus-type metallocyclic strips are formed through the synergistic coordination of sulfate anions and Co-II ions to a bifunctional chiral ligand. The chirality is derived from two types of helical chiralities, namely triply twisted Mo''bius ring and circular helicate, which represent a new phenomenon in metal-organic complex systems.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Medicinal
Xiangping Deng, Xiaofei Deng, Wentao Ning, Lilan Xin, Qiuzi Li, Zhiye Hu, Baohua Xie, Kaiwei Liang, Chang Min, Chune Dong, Jian Huang, Hai-Bing Zhou
Summary: Novel dual-functional ER & alpha; degraders were developed, which exhibited potent antiproliferative and ER & alpha; degradation activity, providing guidance for developing new antitumor drug candidates for ER & alpha;(+) breast cancer therapy.
JOURNAL OF MEDICINAL CHEMISTRY
(2023)
Article
Chemistry, Physical
C. Rose Kennedy, Matthew Joannou, Janelle E. Steves, Jordan M. Hoyt, Carli B. Kovel, Paul J. Chirik
Summary: This study describes the selective intermolecular homodimerization and cross-cycloaddition of vinylsilanes with unbiased 1,3-dienes catalyzed by a pyridine-2,6-diimine (PDI) iron complex. The chemoselectivity of these reactions was found to be distinct from that of similar alpha-olefin reactions with 1,3-dienes. Mechanistic studies provided insights into substrate-controlled regioselectivity, and identified diamagnetic iron diene and paramagnetic iron olefin complexes as catalyst resting states. The relative rates of beta-H elimination and C-C reductive elimination were ultimately governed by the silyl substituents, dictating final product formation.
Review
Plant Sciences
Bing Yang, Chenyun Xu, Yuting Cheng, Ting Jia, Xueyun Hu
Summary: Iron-sulfur (Fe-S) clusters are ancient protein cofactors that exist ubiquitously in organisms and play important roles in various life processes. Plastids, semi-autonomous organelles believed to originate from cyanobacterial endosymbionts, have a Fe-S cluster biosynthesis and delivery pathway similar to cyanobacteria. Fe-S clusters are crucial for the normal functioning of downstream Fe-S proteins in plastids. Recent research has made significant progress in understanding this pathway and this review summarizes these findings as well as the remaining scientific challenges.
PLANT CELL REPORTS
(2023)
Article
Chemistry, Applied
Giulio Bresciani, Lorenzo Biancalana, Stefano Zacchini, Guido Pampaloni, Gianluca Ciancaleoni, Fabio Marchetti
Summary: The catalytic activity of a series of diiron complexes based on the {Fe2Cp2(CO)(x)} core (x = 2-3) and containing a bridging aminocarbyne ligand was screened in the transfer hydrogenation reaction of cyclohexanone from isopropanol. The best catalyst among these complexes was [Fe2Cp2(CN)(CO)(mu-CO){mu-CN(Me)(4-C6H4OMe)}], 3a, which exhibited moderate activity and showed a carbyne-centered mechanism, stabilized by the cyanide co-ligand, as supported by DFT calculations and IR analyses.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Materials Science, Biomaterials
Melissa Santi, Valentina Frusca, Maria Laura Ermini, Ana Katrina Mapanao, Patrizia Sarogni, Alessandra Gonnelli, Noemi Giannini, Agata Zamborlin, Lorenzo Biancalana, Fabio Marchetti, Valerio Voliani
Summary: Head and neck squamous cell carcinomas (HNSCCs) are a complex group of malignancies that currently rely on platinum-based chemotherapy with severe side effects. Researchers are exploring alternative metal complexes to reduce adverse reactions. The concurrent administration of cisplatin and emerging metal complexes shows promising results in increasing the efficacy of HNSCC treatment while reducing side effects.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Chemistry, Inorganic & Nuclear
Lorenzo Bonaldi, Marco Bortoluzzi, Stefano Zacchini, Guido Pampaloni, Fabio Marchetti, Lorenzo Biancalana
Summary: The chemistry of 1,2,4,5-tetrazines has attracted attention in the synthesis and application field. Recent studies have shown that regioselective reactions with alkynes and alkenes are favored when the tetrazine ring is coordinated to certain metal centers. This study explores the reactivity of tetrazines with chalcogenocyanate anions and demonstrates the formation of new heterocycles. The resulting ruthenium complexes were characterized using various analytical and spectroscopic techniques.
INORGANIC CHEMISTRY
(2023)
Article
Polymer Science
Giovanni Ricci, Giuseppe Leone, Giorgia Zanchin, Francesco Masi, Stefano Zacchini, Giulio Bresciani, Massimo Guelfi, Guido Pampaloni
Summary: Novel copper complexes were synthesized by reacting copper(II) dichloride and copper(II) dibromide with pyridyl-imine ligands with different substituents. The complexes were characterized and their molecular structure was determined. When combined with methylaluminoxane (MAO), the complexes acted as active and selective catalysts for the polymerization of 1,3-dienes, resulting in polymers with unusual structures.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Biochemistry & Molecular Biology
Giulio Bresciani, Stefano Zacchini, Guido Pampaloni, Marco Bortoluzzi, Fabio Marchetti
Summary: Diiron mu-aminocarbyne complexes can be synthesized by reacting sodium cyanate and tetrabutylammonium thiocyanate with pre-prepared diiron aminocarbyne complexes, yielding different substituted diiron cyanide complexes with yields of 67-81%, through substitution of the acetonitrile ligand. When reacted with potassium selenocyanate at reflux temperature, cyanide complexes can be obtained with yields of 45-67%. When reacted at room temperature in acetone, a small amount of potassium selenocyanate complexes can be obtained. All products were fully characterized and the chiral structure was determined by single crystal X-ray diffraction. DFT calculations shed light on the coordination mode and stability of the {NCSe-} fragment.
Article
Chemistry, Inorganic & Nuclear
Chiara Zappelli, Gianluca Ciancaleoni, Stefano Zacchini, Fabio Marchetti
Summary: In this study, the authors investigated the reactions of [Fe2Cp2(CO)(mu-CO){mu-eta 1:eta 3-C gamma(Fc)-C beta HC alpha(CN)NMe2}] complex with isocyanides (CNR). They were able to characterize and understand the structure and properties of the resulting products.
Article
Chemistry, Inorganic & Nuclear
Giulio Bresciani, Serena Boni, Tiziana Funaioli, Stefano Zacchini, Guido Pampaloni, Natalia Busto, Tarita Biver, Fabio Marchetti
Summary: We synthesized and evaluated the anticancer potential of two series of diruthenium biscyclopentadienyl carbonyl complexes. Novel dimetallacyclopentenone compounds (2-4) were obtained from the thermal reaction of [Ru2Cp2(CO)(μ-CO)(μ-η^1:η^3-C(Ph)C(Ph)C(O)}], 1, with alkynes HCCR [R = C5H4FeCp (Fc), 3-C6H4(Asp), 2-naphthyl; Cp = η(5)-C5H5, Asp = OC(O)-2-C6H4C(O)Me]. The resulting complexes showed cytotoxic activity against cancer cells, different interactions with nucleic acids, and production of ROS.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Giulio Bresciani, Jan Vanco, Tiziana Funaioli, Stefano Zacchini, Tomas Malina, Guido Pampaloni, Zdenek Dvorak, Zdenek Travnicek, Fabio Marchetti
Summary: Diruthenacyclopentenone complexes were synthesized and characterized. The complexes exhibited stronger cytotoxicity than cisplatin against various cancer cell lines, with the 17α-estradiol derived complex showing the highest activity. Further studies revealed that some complexes affected the cell cycle, apoptosis, oxidative stress, and autophagy.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Cristiana Cesari, Marco Bortoluzzi, Tiziana Funaioli, Cristina Femoni, Maria Carmela Iapalucci, Stefano Zacchini
Summary: This study reports the synthesis of Ru6C carbonyl clusters and their reactions with different reagents, the structures of the products were characterized by X-ray diffraction, and the redox behavior was investigated by electrochemical and spectroscopic methods.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Giulio Bresciani, Stefania Volante, Lorenzo Biancalana, Stefano Zacchini, Guido Pampaloni, Fabio Marchetti
Summary: Complexes [FeCpI(CO)(CNR)] and [FeCpI(CNR)2] were synthesized in 58-73% yields through the thermal reactions of [FeCpI(CO)2] with one/two equivalents of CNR, respectively, in the presence of [Fe2Cp2(CO)4] as catalyst. The catalytic potential of 1, 2a-f, and 3a-f in the bulk polymerization of rac-lactide was examined.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2023)
