Article
Chemistry, Inorganic & Nuclear
Julien Egly, Weighang Chen, Aline Maisse-Francois, Stephane Bellemin-Laponnaz, Thierry Achard
Summary: Amide synthesis is a crucial transformation in chemistry and biology. N-heterocyclic carbene-based ruthenium catalyst systems have been proven to be active for direct synthesis of amides. In this study, a series of Ru complexes with thioether-functionalized N-heterocyclic carbene ligands were prepared and applied to the amidation reaction, resulting in high conversions but moderate yields.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Sanya Pachisia, Ram Kishan, Samanta Yadav, Rajeev Gupta
Summary: This study reports the synthesis and characterization of two half-sandwich Ru(II) complexes supported with amide-phosphine based ligands, which serve as significant catalysts for the borohydride mediated reduction of various nitro-substrates. Mechanistic studies have confirmed the intermediacy of [Ru-H] in the reduction and asserted the involvement of several organic intermediates during the catalysis.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Roman I. Nekrasov, Tat'yana A. Peganova, Ivan V. Fedyanin, Evgenii I. Gutsul, Oleg A. Filippov, Natalia V. Belkova, Alexander M. Kalsin
Summary: A series of pentamethylcyclopentadienyl rhodium complexes were synthesized and characterized, and some complexes were found to have low stability and high nucleophilicity and reactivity.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Sonia Infante-Tadeo, Vanessa Rodriguez-Fanjul, Cintia C. Vequi-Suplicy, Ana M. Pizarro
Summary: The passage describes the rapid hydrolysis and high basicity of complexes [Os(eta 6-arene)(C,N-phenylpyridine)Z] with chlorido or tethered oxygen as the ligand. It also reveals the structure-activity relationship between Os-CN and Os-NN complexes.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Lukas Hanzl, Jaromir Vinklarek, Libor Dostal, Ivana Cisarova, Miroslava Litecka, Jan Honzicek
Summary: This study explores the stabilizing effect of an intramolecularly coordinated thioether function in propene complexes. The complexes were formed by protonation of allyl analogues and characterized by various spectroscopic techniques. The tungsten complexes showed unusually high stability and resistance to ligand exchange reactions.
Article
Chemistry, Multidisciplinary
Carsten Mueller, Justin Schu, Bernd Morgenstern, Michael Zimmer, Marc Schmidtmann, Andre Schaefer
Summary: Phosphanyl-substituted tin(ii) half sandwich complexes, which form head-to-tail dimers due to the Lewis acidic tin center and Lewis basic phosphorous atom, were reported. Their properties and reactivities were investigated both experimentally and theoretically. Furthermore, related transition metal complexes of these species are presented.
Article
Chemistry, Physical
Lisa Wirtz, Kinza Yasmin Ghulam, Bernd Morgenstern, Andre Schaefer
Summary: The synthesis, characterization, and catalytic application of a series of constrained geometry ansa-half-sandwich complexes of magnesium are reported in this study. These versatile s-block catalysts were applied in various dehydrocoupling and hydroelementation reactions, demonstrating a broad applicability, with particularly remarkable performance in dehydrocoupling reactions.
Article
Biochemistry & Molecular Biology
Prinessa Chellan, Vicky M. Avery, Sandra Duffy, Kirkwood M. Land, Christina C. Tam, Jong H. Kim, Luisa W. Cheng, Isolda Romero-Canelon, Peter J. Sadler
Summary: The reaction of dihydroartemisinin (DHA) with 4-methyl-4'-carboxy-2,2'-bipyridine yielded a novel ester derivative L1. Subsequent synthesis of organometallic half-sandwich complexes with pentamethylcyclopentadienyl, tetramethylphenylcyclopentadienyl, or tetramethylbiphenylcyclopentadienyl ligands exhibited potent antiplasmodial and anticancer activities, with iridium complex 3 emerging as a promising candidate for further studies.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Sohini Bose, Hieu D. Nguyen, Anh H. Ngo, Loi H. Do
Summary: This research reports the development of fluorescent half-sandwich iridium complexes using a fluorophore attachment strategy. The research shows that these complexes exhibit similar catalytic activities as their non-fluorescent counterparts, and can be taken up by mouse fibroblast cells. The fluorescent iridium complexes have the potential to be used for intracellular catalyst tracking in biological studies.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Nuria Alvarez-Pazos, Jorge Bravo, Ana M. Grana, Soledad Garcia-Fontan
Summary: A series of new half-sandwich mixed phosphine-phosphinite ruthenium complexes and related compounds were prepared and thoroughly characterized in this study.
INORGANICA CHIMICA ACTA
(2021)
Article
Chemistry, Inorganic & Nuclear
Tianyu Han, Yuying Wu, Weinan Han, Kaiwen Yan, Jian Zhao, Yanyan Sun
Summary: The facile modification of ligands in organometallic Ru(II)-arene complexes provides more opportunities for optimizing their pharmacological profiles. This study designed and synthesized three Ru(II)-arene complexes containing a GST inhibitor (NBDHEX), with in vitro results showing increased activities against tumor cells, especially in complex 3 which demonstrated the highest activity. Complex 3, with more alkyl groups in the arene ligand, exhibited increased electron density at the Ru(II) center leading to improved hydrolysis rate and higher anticancer activity.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Yang Wang, Wen Guo, Ai-Lin Guan, Shuang Liu, Zi-Jian Yao
Summary: In this study, a series of iridium complexes based on beta-ketoamino ligands were synthesized, showing good catalytic activity in the amidation reaction to produce amides with high yields. The excellent catalytic performance, mild reaction conditions, and broad substrate scope suggest the potential industrial applications of these iridium catalysts.
INORGANIC CHEMISTRY
(2021)
Review
Chemistry, Inorganic & Nuclear
Jun Okuda
Summary: This personal account summarizes the development of molecularly defined organometallic polymerization catalyst precursors based on cyclopentadienyl metal complexes. Departure from the bent metallocene structure provided opportunities to considerably expand the coordination sphere of early transition metal centers relevant to olefin polymerization. The importance of modifying cyclopentadienyl ligands for the rational design of homogeneous polymerization catalysts is highlighted.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Manuel Schmitt, Maximilian Maylaender, Valentin Radtke, Tim Heizmann, Sabine Richert, Ingo Krossing
Summary: The stable and easily accessible salt [Ni(CO)(4)](+)[F{Al(ORF)(3)}(2)](-) was used as a Ni-I synthon to generate novel half-sandwich complexes [Ni(arene)(CO)(2)](+). The reaction with [Ni(o-dfb)(2)](+) salt, which has a rather endergonic reaction, was successful by removing CO irreversibly. The resulting complex has a unique slipped eta(3), eta(3)-sandwich structure and is the ultimate synthon for Ni-I chemistry.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Alicia Marco, Gloria Vigueras, Natalia Busto, Natalia Cutillas, Delia Bautista, Jose Ruiz
Summary: New valproate Ir(iii) and Rh(iii) half-sandwich conjugates with a C,N-phenylbenzimidazole chelated ligand have been synthesized and characterized. The conjugation of valproic acid to organometallic fragments appears to enhance the antibacterial activity of the complexes against Enterococcus faecium and Staphylococcus aureus Gram-positive bacteria.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Avinash K. Srivastava, Yachana Upadhyay, Munsaf Ali, Suban K. Sahoo, Raj K. Joshi
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2020)
Article
Chemistry, Inorganic & Nuclear
Vijesh Tomar, Yachana Upadhyay, Avinash K. Srivastava, Meena Nemiwal, Raj K. Joshi, Pradeep Mathur
Summary: The Suzuki-Miyaura coupling reactions of ferrocenyl/phenyl derivatives with aryl-boronic acid were successfully achieved using a selenated NHC-Pd(II) full pincer complex catalyst in water under normal atmospheric conditions. Solvatochromic studies of new ferrocene compounds revealed interesting changes, while aggregation studies showed an increase in absorbance with decreased water content in the water/DMSO solvent mixture.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Himanshu Khandaka, Kamal Nayan Sharma, Raj Kumar Joshi
Summary: Two value added C-C cross coupling reactions, Sonogashira and Stille couplings, were successfully achieved using a magnetically recoverable heterogeneous catalyst Fe3O4@SiO2@NHC<^>SPh-Pd(II), without the need for copper and amines, and with the elimination of toxic fluoride additives, resulting in excellent yields. The catalyst has a broad substrate scope for both coupling reactions and a magnetically recoverable feature, making it highly desirable for industrial applications in present heterogeneous catalysis.
TETRAHEDRON LETTERS
(2021)
Review
Biochemistry & Molecular Biology
Debabrata Majumder, Mousumi Debnath, Kamal Nayan Sharma, Surinder Singh Shekhawat, G. B. K. S. Prasad, Debasish Maiti, Seeram Ramakrishna
Summary: The Mediterranean diet is highly regarded and is associated with the prevention of degenerative diseases and increased longevity. Olive oil consumption is a key feature of this diet, and it is rich in bioactive compounds that have anti-inflammatory and cardioprotective properties. Recent studies suggest that the phytochemicals in olive oil may have potential against SARS-CoV-2. However, there are still gaps in understanding how the phytochemical composition of olive oil is influenced by processing methods and the signaling pathways involved in its health benefits.
CURRENT PHARMACEUTICAL BIOTECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Sangeeta Kumari, Charu Sharma, Avinash K. Srivastava, Naveen Satrawala, Kamal N. Sharma, Raj K. Joshi
Summary: A Ru(II) complex was synthesized for C-H bond activation alkenylation of arenes using thioether directing groups, achieving high yields under milder conditions compared to previous methods utilizing precious noble metal catalysts. Broad substrate scope was demonstrated with good tolerance towards benzyl thioethers and vinyl, making it the first report of its kind utilizing a Ru-based catalyst for thioether alkenylation.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Poonam Kaswan, Preeti Oswal, Arun Kumar, Chandra Mohan Srivastava, Dipti Vaya, Varun Rawat, Kamal Nayan Sharma, Gyandshwar Kumar Rao
Summary: This review summarizes the applications of multidentate SNS ligands as enzyme imitating models, chemosensors, and bioimaging agents. SNS ligands, containing bioactive sulfur and nitrogen donors, have significant biological value. They have been used to mimic the active sites of metalloproteins and to construct model complexes. Metal complexes of SNS ligands have been investigated to imitate enzymes and chemosensors based on SNS donors have been studied for cation/anion and molecule detection. The role of SNS ligands in bioimaging and their biological activities, including treating diseases and managing infections, have also been discussed.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Sangeeta Kumari, Charu Sharma, Naveen Satrawala, Avinash K. Srivastava, Kamal N. Sharma, Raj K. Joshi
Summary: In this study, a novel reaction methodology utilizing selenium as a directing group was developed for the synthesis of compounds containing benzyl selenide functional group. The method is simple and efficient, and selenium is a commonly used laboratory reagent.
Article
Materials Science, Ceramics
Mukesh Suthar, Avinash K. Srivastava, Charu Sharma, Raj K. Joshi, P. K. Roy
Summary: This paper describes the synthesis of Ce-substituted Y-type barium hexaferrites and their suitability as a heterogeneous catalyst for the reduction of nitroaromatic-compounds. The synthesized catalyst exhibited high selectivity and recyclability, and the substitution of Ce had an effect on the catalytic performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Archana Ranjan, Deepu Sharma, Avinash K. Srivastava, Ajit Varma, Magani S. K. Jayadev, Raj K. Joshi
Summary: Ferrocene-based compounds have gained importance in cancer treatment due to their lower toxicity and cost-effective synthesis. In this study, thianes containing ferrocene were synthesized and their synergistic effect with thiol was observed in suppressing tumor growth. These compounds showed significant anticancer effects by inducing apoptosis and inhibiting cell migration. The ferrocene-based compounds have the potential to serve as a platform for the development of new anticancer agents, replacing rare metal compounds.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Aditi Soni, Yachana Upadhyay, Avinash K. Srivastava, Charu Sharma, Raj K. Joshi
Summary: A facile synthesis of ferrocenyl vinyl ethers has been reported through a NaOH-assisted C-O bond-forming reaction. The method yields high amounts of products in a short time. The vinyl ethers formed through the reaction of 1,2-and 1,3-diols showed selective sensing capabilities for Cu2+ ions.
INORGANICA CHIMICA ACTA
(2023)
Article
Chemistry, Organic
Suresh Saini, Ramesh Bhawar, Avinash Kumar Srivastava, M. Siri, Kopal Garg, Shubhankar Kumar Bose
Summary: An efficient Lewis base-mediated protoboration of aromatic and aliphatic alkenes with B(2)pin(2) as the boron reagent is reported. This protocol demonstrates broad substrate scope and good functional-group tolerance on alkenes, giving high yields of synthetically useful alkyl boronate esters under mild reaction conditions. The gram-scale reaction further highlights the usefulness of this method.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Organic
Charu Sharma, Avinash K. Srivastava, Deepak Sharma, Raj K. Joshi
Summary: This article presents a significantly upgraded Ullmann reaction for C-N cross couplings of aryl/alkyl chlorides. The method works in completely opposite conditions and is significantly influenced by various 3d transition metals, resulting in improved reaction time and catalytic activity.
ORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Charu Sharma, Avinash K. Srivastava, Deepak Sharma, Raj K. Joshi
Summary: The iron chalcogenide carbonyl cluster and copper acetate were found to be excellent bimetallic catalysts for the C-N coupling reaction. The reaction proceeds under simple and solvent-free conditions, producing good yields of products in a short time. The method is effective for different types of amines and shows compatibility with certain functional groups. Additionally, it is the first report on the use of a zero-valent iron complex for C-N coupling reaction.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Polymer Science
Michael Murphy, Nitinkumar S. Upadhyay, Munsaf Ali, James Passarelli, Jodi Grzeskowiak, Maximillian Weires, Robert L. Brainard
Summary: This study investigates two approaches - replacing phenyl groups with methyl groups and increasing the number of polymerizable olefins - to improve the lithographic performance of antimony-carboxylate complexes containing polymerizable olefins.
JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Guojun Hu, Ziyue Deng, Yanwei Wang, Dan Yuan, Yong Zhang, Yingming Yao
Summary: A series of rare-earth metal complexes were synthesized and used as efficient initiators for the polymerization of trimethylene carbonate (TMC) and (L)-lactide ((L)-LA).
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Van Ha Nguyen, John H. K. Yip
Summary: In this study, eight PtII-azulene complexes were synthesized to investigate the effect of metalation on the electronic structures, spectroscopy, and luminescence of organic chromophores. The results showed that the attachment of Pt substituents to azulene affected the HOMOs, LUMOs, and luminescence properties. The study provides insights into the role of metalation in modifying the properties of organic chromophores.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Moon Kedia, Virender Singh, Bhaskaran Shankar, Malaichamy Sathiyendiran
Summary: This study synthesized two types of neutral binuclear metallocycles using a one-pot solvothermal method and characterized their structures. The analysis revealed that these complexes adopt a binuclear heteroleptic cyclic architecture and belong to phosphine oxide donor (P=O)-based supramolecular coordination cyclic complexes.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Radhey S. Srivastava
Summary: This study demonstrates the effectiveness of zero-valent elements as reductants for the deoxydehydration reaction of polyols catalyzed by ONO-pincer ligated molybdenum dioxo. The insolubility and easy separability of the reductants and their oxidized products during the reaction are emphasized. Additionally, the choice of ligand has an impact on the catalytic performance of the reaction.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Hao Zhou, Yajun Sun, Li Deng, Weiran Yang, Yuehui Li
Summary: Efficient Ru-catalyzed hydrogenation of aldehydes was achieved using carbazole-derived phosphine ligands, with the crucial role of N-H moiety in promoting the catalytic reaction. The method was successfully applied in the Co/Ru-catalyzed hydroformylation process, resulting in the production of long-chain alcohols with excellent yields.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Theodor Danescu, Alexandru Lupan, Radu Silaghi-Dumitrescu, R. Bruce King
Summary: The structures and energies of complexes containing (Me2C2N2P)2Ru2(CO)n and (Me2C2N2P)2Fe2(CO)n have been studied. Low-energy structures are characterized by the presence of bridging diazaphospholyl rings, while higher-energy structures involve different ligand structures.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Savannah C. Kapper, Aamani Ponnekanti, Jonas Schaab, Tian-yi Li, Christine L. Chung, Gael Ung, Peter I. Djurovich, Mark E. Thompson
Summary: Organometallic iridium complexes with two cyclometalated ligands and one bis-oxazoline derived ancillary ligand were studied. These complexes have emission spanning across the visible and near-ultraviolet region, with moderate to high photoluminescence quantum yields. The (ppy)2Ir(BOX-CN) complexes were resolved into Delta- and Lambda-diastereomers based on solubility differences.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Zahra Karimi Sangari, Hossein Naeimi
Summary: In this research, a nanostructured CoCuFe2O4 catalyst was prepared using a brief and useful synthetic strategy. This catalyst was used for synthesizing 1,2,4,5-tetrasubstituted imidazole derivatives under ultrasonic irradiation. The approach offers advantages such as high efficiency, short reaction times, simplicity of the reaction medium, accelerated reaction rates, and easier separation and purification of products.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rukhsana Gul, Wajid Munir, Ebraheem Abdu Musad Saleh, Shaukat Shujah, Muhammad Sirajuddin, Saira Tabassum, Khalil Ur Rehman, Dilfaraz Khan, Sameerah I. Al-Saeedi, Ehab A. Abdelrahman
Summary: Two new Schiff base ligands were synthesized and used to form copper, nickel, and cobalt complexes. The synthesized compounds were characterized and screened for various biological activities. The metal complexes showed better activities in antibacterial, antifungal, antidiabetic, and antioxidant assays.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Review
Chemistry, Inorganic & Nuclear
Ahsan Nazir, Pengwei Huo, Ameena Tur Rasool
Summary: This review explores the potential of g-C3N4-based S-scheme heterojunctions in addressing environmental issues. It summarizes the mechanism and preparation techniques of S-scheme heterojunctions based on g-C3N4, and presents recent studies on their applications in pollutant removal, CO2 reduction, hydrogen production, and bacterial disinfection. The review concludes with an outlook on future challenges for g-C3N4-based S-scheme heterojunctions.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Francois Mazars, Koffi Senam Etse, Guillermo Zaragoza, Lionel Delaude
Summary: The activity of three Pd-PEPPSI catalyst precursors with N-heterocyclic carbene (NHC) ligands derived from caffeine and theophylline in Mizoroki-Heck reactions was tested. The results showed that the catalysts achieved high conversions and yields, especially in the presence of electron-withdrawing substituents.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Bo-Han Wu, Xue Zhou, Lin Liu, Zheng-Bo Han
Summary: Researching carbon dioxide removal from flue gas and natural gas is crucial. Metal-organic frameworks (MOFs) are commonly used in adsorption due to their high surface area, porosity, and chemical properties. An ultra-microporous MOF CPM-20(Co) with mixed ligand was synthesized using inexpensive ligands. The material exhibited high selectivities and low regenerative energy, making it a promising option for CO2 separation in industries.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2024)