Article
Chemistry, Applied
Douglas P. Oliveira, Thais R. Cruz, Daniele M. Martins, Pedro Ivo S. Maia, Antonio E. H. Machado, Andre L. Bogado, Beatriz E. Goi, Benedito S. Lima-Neto, Valdemiro P. Carvalho-Jr
Summary: Arene-ruthenium complexes were synthesized and used as pre-catalysts in ROMP of norbornene. Results showed that yields increased with increasing cyclo-alkyl ring size. Through various experimental and characterization methods, optimal reaction conditions were determined and the behavior of the pre-catalysts was well understood.
Article
Chemistry, Physical
Peng Ma, Jiaren Zhang, Xiaqian Wu, Jianhui Wang
Summary: Phosphine-free ruthenium benzylidene complexes with imidazole ligands have been reported. These catalysts are effective for high-temperature ring-closing metathesis (RCM) and cross-metathesis (CM) reactions, unlike the commonly used phosphine-containing N-heterocyclic carbene-based ruthenium catalysts which exhibit side reactions. This discovery paves the way for the development of more selective ruthenium metathesis catalysts for reactions requiring harsh conditions.
Review
Chemistry, Inorganic & Nuclear
Jessica Margalef, Maria Biosca, Pol de la Cruz Sanchez, Jorge Faiges, Oscar Pamies, Montserrat Dieguez
Summary: The success of phosphine-oxazoline ligands has led to advancements in P-oxazoline ligand families, resulting in diverse structures and more efficient ligands for asymmetric transformations. Through proper design, these heterodonor bidentate ligand families exhibit superior catalytic performance in a variety of asymmetric reactions.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Inorganic & Nuclear
Sheida Rajabi, Franziska Ruettger, Jana Luecken, Sebastian Dechert, Michael John, Franc Meyer
Summary: Two mononuclear ruthenium(II) complexes with dianionic {N-4} ligands and axial pyridines were prepared and characterized structurally. The redox properties of the complexes were investigated electrochemically, and their potential as water oxidation catalysts was tested using cerium ammonium nitrate at pH 1.0. Complex 1 underwent degradation, likely due to ligand oxidation, while complex 2 exhibited higher stability and efficiency in water oxidation reactions.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Noy B. Nechmad, Victoria Kobernik, Naziha Tarannam, Ravindra Phatake, Or Eivgi, Sebastian Kozuch, N. Gabriel Lemcoff
Summary: A novel catalyst Ru-S-CF3-I was synthesized with distinct activity and selectivity profiles for olefin metathesis reactions. The combination of photoisomerization and photochemical release of chloride ions allows for a wide scope of photoinduced olefin metathesis reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Jana Hatzfeld, Steffen Skowaisa, Elisabeth Jackel, Julia Kaufmann, Edgar Haak
Summary: Various triaminocyclopentadienyl ruthenium complexes were synthesized from Ru-3(CO)(12) and tested for their ability to catalyze cascade conversions of propargyl alcohols. The substrate scope of catalytic cycloadditions was extended to terpenoid-derived propargyl alcohols containing an internal alkyne moiety, resulting in a wide range of cyclic terpenoid and phloroglucinol adducts obtained by complementary application of both types of catalysts.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Organic
Han Hao, Thibault Bagnol, Mathieu Pucheault, Laurel L. Schafer
Summary: By utilizing a specific titanium precatalyst, the hydroamination of alkynylphosphines to prepare 2-amino-phosphines in high yield and on gram scale has been achieved. The broad substrate scope allows for the rapid assembly of a variety of ligands in one pot, making preparation of metal P,N-complexes for catalysis or small molecule activation easy and efficient.
Article
Biochemistry & Molecular Biology
Soren Arlt, Vladana Petkovic, Gerd Ludwig, Thomas Eichhorn, Heinrich Lang, Tobias Rueffer, Sanja Mijatovic, Danijela Maksimovic-Ivanic, Goran N. Kaluderovic
Summary: In this study, various ruthenium complexes were synthesized, characterized, and evaluated for their cytotoxic activity against different cell lines. The complexes showed activity in the lower micromolar range and exhibited higher efficacy than cisplatin, with one complex inducing apoptosis and caspase activation in a cisplatin-resistant cell line.
Article
Chemistry, Inorganic & Nuclear
Dmitry I. Pavlov, Denis G. Samsonenko, Laura Bonfili, Massimiliano Cuccioloni, Enrico Benassi, Riccardo Pettinari, Andrei S. Potapov, Vladislava V. Matveevskaya
Summary: Six new arene-ruthenium(II) complexes with different arene and oxime ligands were synthesized and characterized. The complexes exhibited a half-sandwich piano-stool geometry and showed promising anti-proliferative activity.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Devon E. Chapple, Paul D. Boyle, Johanna M. Blacquiere
Summary: New members of the [Ru(Cp/Cp*)(P2N2R ')(MeCN)]PF6 catalyst family were synthesized, among which a derivative showed relatively high stability due to a specific coordination mode of the ligand protecting the low-coordinate metal ion. Different derivatives of the catalyst family exhibited varied features, such as the capability to activate chlorine atoms in organic solvents.
Article
Chemistry, Multidisciplinary
Joshua J. Sutton, Dan Preston, Philipp Traber, Johannes Steinmetzer, Xue Wu, Surajit Kayal, Xue-Z Sun, James D. Crowley, Michael W. George, Stephan Kupfer, Keith C. Gordon
Summary: The optical properties of two Re(CO)(3)(bpy)Cl complexes with different substituents were studied, revealing distinct charge transfer bands in their absorption spectra and two emissive states in their excited-state spectroscopy which are modulated by solvent. Time-resolved infrared spectroscopy identified the nature of the excited states in different solvents, with DFT calculations suggesting that the switching of properties induced by solvent is controlled by spin-orbit coupling.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Adrian Sytniczuk, Filip Struzik, Vishal Purohit, Karol Grela, Anna Kajetanowicz
Summary: The synthesis of inexpensive 2-isopropyl-6-methylaniline analogues was achieved through the employment of aza-Claisen rearrangement and subsequent reduction of anilines, overcoming the issue of high price and low availability. The obtained aniline derivatives were utilized in the synthesis of lipophilic Hoveyda-Grubbs-type complexes, serving as efficient catalysts in ethenolysis reactions. The complexes with bulky sec-butyl substituent exhibited superior performance compared to the leading catalyst based on 2-isopropyl-6-methylaniline, making them valuable candidates for large-scale industrial production with a TON of up to 192,000.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Hao Liang, Jun Wang
Summary: The p-Cymene ruthenium(II) complex is widely used in C-H activation, but enantioselective C-H activation promoted by arene ruthenium(II) complexes has only recently been achieved. Various strategies including nitrene C-H insertion, chiral transient directing groups, chiral carboxylic acid, relay catalysis, and chiral arene ligands are summarized and discussed in this minireview, with the aim of inspiring further developments.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Chemistry, Physical
Pascale Crochet, Victorio Cadierno
Summary: N-Heterocyclic carbenes (NHCs) are widely used ligands in organometallic chemistry and catalysis due to their stability and flexibility. By functionalizing NHCs with hydrophilic groups, they can be used in aqueous catalysis, which is a hot topic in Green Chemistry. This review summarizes the research on hydrophilic NHC-gold catalysts and the catalytic applications of water-soluble gold nanoparticles stabilized by hydrophilic NHCs.
Review
Chemistry, Applied
Thomas Schlatzer, Rolf Breinbauer
Summary: Transition metal-catalyzed reactions in aqueous media are gaining increasing interest due to advantages in cost, safety, and versatility. These reactions are used in homogenous catalysis, life sciences, and biocatalysis, utilizing water-soluble phosphine ligands for reliable catalysis in the aqueous phase. Recent advancements in synthetic strategies for hydrophilic phosphines and phosphites, as well as their applications in transition metal catalysis using aqueous solvents, are summarized in this review.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Review
Chemistry, Physical
Victorio Cadierno
Review
Chemistry, Physical
Victorio Cadierno
Review
Chemistry, Organic
Vittorio Cadierno
Summary: Recent developments in the metal-catalyzed hydrofunctionalization of alkynes with carboxylic acids are comprehensively reviewed in this study, with a focus on both inter- and intramolecular processes and their implications in the synthesis of natural products and biologically active molecules. This review also highlights the use of cascade processes for the assembly of complex heterocyclic compounds.
CURRENT ORGANIC CHEMISTRY
(2021)
Review
Chemistry, Inorganic & Nuclear
Rebeca Gonzalez-Fernandez, Pascale Crochet, Victorio Cadierno
Summary: This short review provides a survey on the atom-economical routes for generating primary amides through catalytic hydration of nitriles and rearrangement of aldoximes, focusing on the extensively studied (?6-arene)-ruthenium(II) derivatives. Additionally, examples of (?6-arene)-osmium(II) complexes with comparable or superior effectiveness in hydrating nitriles have also been mentioned.
INORGANICA CHIMICA ACTA
(2021)
Editorial Material
Chemistry, Physical
Victorio Cadierno
Review
Chemistry, Inorganic & Nuclear
Pascale Crochet, Victorio Cadierno
Summary: This review discusses the application of metal-based catalysts in the hydration of nitriles, with a focus on alpha- and beta-hydroxynitriles and cyanamides. It points out the lack of attention paid to this specific class of substrates compared to more classical organonitriles. The review also covers transfer hydration strategies involving water surrogates for conversion of C equivalent to N groups into C(=O)NH2 groups.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Rebeca Gonzalez-Fernandez, Pascale Crochet, Victorio Cadierno
Summary: The title compound, [RuCl2(η6-p-cymene)((PPh2NHPr)-Pr-n)] (2), was obtained in a 71% yield by reacting a toluene solution of the chlorophosphine complex [RuCl2(η6-p-cymene)(PPh2Cl)] (1) with two equivalents of n-propylamine at room temperature. The aminophosphine complex 2 was characterized by various analytical methods and its catalytic performance in the hydration of benzonitrile was briefly explored.
Article
Chemistry, Physical
Victorio Cadierno
Summary: Metal-catalyzed hydrofunctionalization reactions of alkynes, especially conjugated 1,3-diynes, have been extensively studied. These reactions provide a straightforward and efficient route to functionalized olefins and various heterocyclic and carbocyclic compounds. However, the regio- and stereocontrol issues associated with conjugated 1,3-diynes make the hydrofunctionalization reactions challenging.
Article
Chemistry, Organic
Javier Francos, Victorio Cadierno
Summary: This study presents a new synthetic procedure for obtaining two previously reported donor-acceptor butadiene dyes. The reactions proceed in water under MW irradiation and the target products were characterized using various analysis methods.
Review
Chemistry, Physical
Pascale Crochet, Victorio Cadierno
Summary: N-Heterocyclic carbenes (NHCs) are widely used ligands in organometallic chemistry and catalysis due to their stability and flexibility. By functionalizing NHCs with hydrophilic groups, they can be used in aqueous catalysis, which is a hot topic in Green Chemistry. This review summarizes the research on hydrophilic NHC-gold catalysts and the catalytic applications of water-soluble gold nanoparticles stabilized by hydrophilic NHCs.
Review
Chemistry, Inorganic & Nuclear
Pascale Crochet, Victorio Cadierno
Summary: This review article focuses on the catalytic applications of arene-osmium(II) complexes, discussing transfer hydrogenation, hydrogenation, oxidation, and nitrile hydration reactions, as well as different C-C bond forming processes comprehensively, showing that they can achieve comparable or superior effectiveness in some instances compared to their ruthenium analogues.
Article
Chemistry, Organic
Rebeca Gonzalez-Fernandez, Pascale Crochet, Victorio Cadierno
Summary: The title compound was synthesized by electrophilic cyanation of commercially available (R)-4-chloro-alpha-methylbenzylamine, yielding a yellow oil in 84% yield. It was characterized using various methods such as H-1 and C-13{H-1] NMR, IR, HRMS, and specific rotation measurements.
Article
Chemistry, Inorganic & Nuclear
Vaibhav Bedi, Dipendu Mandal, Zahid Hussain, Shi-Ming Chen, Yile Wu, Zheng-Wang Qu, Stefan Grimme, Douglas W. Stephan
Summary: The reaction of (tBuO(2)CN)(2) with 9-BBN leads to the formation of a bicyclic heterocyclic compound, while its reactions with BF3 or [Et3Si][B(C6F5)(4)] result in the isolation of different compounds. Computational studies reveal that the steric and electronic properties of the Lewis acid are important in the formation of one of the compounds.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Chisa Itoh, Haruka Yoshino, Taku Kitayama, Wataru Kosaka, Hitoshi Miyasaka
Summary: A new synthetic route for constructing functional paddlewheel diruthenium(II,II) complexes was developed, utilizing Schiff base condensation reactions. The attached Schiff base groups significantly affected the electronic states of the resulting complexes, as revealed by cyclic voltammetry and DFT calculations.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Danrui Ni, Haozhe Wang, Xianghan Xu, Weiwei Xie, Robert J. Cava
Summary: A layered rhombohedral polymorph of indium(iii) triiodide is synthesized at high pressure and temperature. It has an orange color, which is different from ambient pressure InI3, which has a monoclinic molecular structure and a light-yellow color.
DALTON TRANSACTIONS
(2024)
Review
Chemistry, Inorganic & Nuclear
Juan Carlos Perez-Sanchez, Raquel P. Herrera, M. Concepcion Gimeno
Summary: Gold(II) complexes have been less utilized in catalysis compared to their gold(I) and gold(III) counterparts. However, gold(II) complexes offer potential in homo-coupling and cross-coupling reactions, as they are more easily accessible through simplified oxidation and reduction processes. Gold(II) exhibits characteristics of both soft acid gold(I) and hard acid gold(III). This review explores the unique reactivity and potential applications of gold(II) species, highlighting their significance in catalytic transformations.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Nighat Yousuf, Yanping Ma, Qaiser Mahmood, Wenjuan Zhang, Yizhou Wang, Hassan Saeed, Wen-Hua Sun
Summary: In this study, a series of structurally rigid cyclooctyl-fused iminopyridine iron complexes were synthesized and used with methylaluminoxane for isoprene polymerization. The extent of steric hindrance of the ligand framework was found to significantly affect catalytic performance, with less hindrance leading to better activity and stability.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Chenghao Song, Huiwei Du, Menglei Xu, Jie Yang, Xinyu Zhang, Jungan Wang, Yuanfang Zhang, Chengjun Gu, Rui Li, Tao Hong, Jingji Zhang, Jiangying Wang, Yongchun Ye
Summary: This study improves the performance of perovskite solar cells by using a dual-hole transport layer strategy. This strategy enhances the charge transfer efficiency of the transport layer, reduces charge recombination, and improves the quality of the perovskite film layer. Ultimately, the stability of the device is enhanced.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Mahender Singh, Aakash Yadav, Ranjit Singh, Chullikkattil P. Pradeep
Summary: A new aryl selenonium polyoxometalate hybrid was developed and compared with an aryl sulfonium polyoxometalate hybrid in terms of their photocatalytic properties. It was found that the aryl selenonium hybrid exhibited better catalytic performance, which could be attributed to the larger atomic radii of selenium stabilizing the photogenerated electron-hole pair more efficiently. Additionally, the generation of elemental selenium through cleavage of C-Se bonds during catalysis was observed.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Yuhan Xie, Boyu Dong, Xuemin Wang, Siyuan Wang, Jinxi Chen, Yongbing Lou
Summary: This study successfully fabricated visible-light-responsive three-dimensional core-shell CoSe2/ZnIn2S4 heterostructures and achieved attractive activity in photocatalytic hydrogen evolution. The presence of CoSe2 improved light absorption and accelerated charge transfer kinetics. The strong interaction between CoSe2 and ZnIn2S4 reduced charge recombination, further enhancing photocatalytic activity for hydrogen evolution.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Andre L. de O. Batista, Joao Marcos T. Palheta, Mauricio J. Piotrowski, Celso R. C. Rego, Diego Guedes-Sobrinho, Alexandre C. Dias
Summary: This study presents a simulation protocol that provides a solid foundation for exploring two-dimensional materials. Using the TiBr2 2H monolayer as an example, the study reveals its promising properties for optoelectronic and valleytronic applications, including its stability, spin-orbit coupling effects, and optical helicity selection rule.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Jiang Jiang, Zi-Wei Li, Zhi-Zhuan Zhang, Bin Tan, Zhao-Feng Wu, Xiao-Ying Huang
Summary: In this work, two metal organic frameworks (MOFs) containing {Cu2I2} clusters, Eu-CuI-INA and Sr-K-CuI-INA, were synthesized and characterized. Both materials have a three-dimensional structure with {Cu2I2} clusters coordinated by INA(-) ligands and Eu3+ or Sr2+ ions. The Sr-K-CuI-INA material exhibited sensitive fluorescence sensing behaviors towards cysteine and nitro-bearing molecules, showing potential applications in bio and explosive molecule sensing. This work provides a good reference for designing fluorescent MOF probes containing CuI molecules.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Zhiya Lin, Jiasheng Wu, Qianwen Ye, Yulong Chen, Hai Jia, Xiaohui Huang, Shaoming Ying
Summary: Na-ion batteries (NIBs) have attracted great interest as a potential technology for grid-scale energy storage due to the wide distribution, low cost, and environmental friendliness of sodium resources. However, their implementation is hindered by low rate capability and cycling stability caused by the large ionic size of Na+. In this study, a three-dimensional nanoarchitectured coral-like CoSe2@N-doped carbon (CL-CoSe2@NC) was synthesized, and it exhibited improved sodium storage properties with better electrode kinetics and a stable SEI film.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Ya-Qiong Zhang, Yu Zhang, Guoping Zeng, Rong-Zhen Liao, Man Li
Summary: The mechanism and selectivity of CO2 reduction under visible light were investigated using density functional calculations. The results showed that a tetradentate PNNP-type Iridium(III) complex exhibited high activity and selectivity in the reaction.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Sanyukta Ghosh, Shubhanth Jain, Soumya Ranjan Mishra, Gerda Rogl, Peter Rogl, Ernst Bauer, B. S. Murty, A. Govindaraj, Ramesh Chandra Mallik
Summary: In this study, reduced graphene oxide (rGO) was uniformly dispersed in the In0.5Co4Sb12 bulk material by ultrasonication, which effectively reduced the lattice thermal conductivity and improved the thermoelectric efficiency.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Mika Takeuchi, Yutaka Amao
Summary: This study developed an effective visible-light driven system for fumaric acid production using renewable resources such as biomass derivatives, providing an alternative to the current petroleum-based synthesis methods.
DALTON TRANSACTIONS
(2024)
Article
Chemistry, Inorganic & Nuclear
Juan Jian, Meiting Wang, Zhuo Wang, Jingwen Meng, Yuqin Yang, Limin Chang
Summary: Developing low-cost and self-supported bifunctional catalysts is crucial for highly efficient water splitting devices. In this study, nano-NiFe2O4 was directly grown onto iron foil surface and Sn4+ was introduced into the NiFe2O4. The resulting Sn-NiFe2O4/IF showed low overpotentials and high current densities during oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), making it a promising catalyst for large-scale hydrogen production.
DALTON TRANSACTIONS
(2024)
