Article
Multidisciplinary Sciences
Xiaofei Chen, Guohua Zhang, Bao Li, Lixin Wu
Summary: This study proposes a strategy that integrates near infrared photothermal and catalytic effects within one active center, which is successfully applied to the catalytic oxidation of cyclohexene in water, resulting in a significant enhancement of catalytic activity.
Article
Chemistry, Multidisciplinary
Robert H. Lavroff, Harry W. T. Morgan, Zisheng Zhang, Patricia Poths, Anastassia N. Alexandrova
Summary: This perspective discusses the dynamic behavior of catalytic systems and the role of multiple isomers. A new paradigm in catalysis theory is proposed, where the macroscopic properties of fluxional catalysts arise from the thermal ensemble of isomers. Accurate chemical predictions require a many-structure picture of the catalyst. The control of dynamic ensembles is crucial for practical fluxional catalysts and targeted synthesis. Computational tools and experimental methods for probing ensembles and specific isomers are discussed.
Article
Materials Science, Multidisciplinary
Aili Wang, Qinghua Xu, Hengbo Yin, Linjiu Xiao, Yansheng He
Summary: The direct synthesis of calcium lactate from glycerol and calcium hydroxide using different supported metallic copper catalysts was investigated. The Cu/HA catalyst exhibited higher selectivity and catalytic activity compared to the Cu/titanate and Cu/C catalysts. The yield of calcium lactate was up to 87.9% with a purity of 95.5% when separated using the concentrated crystallization method.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Chemistry, Physical
Junjie Zhang, Xueying Wu, Jiazhi Chen, Xi Wang, Yuliang Mai
Summary: Researchers have developed a highly efficient Cu-Cu2O@NC catalyst for the dehydrogenation of glycerol to lactic acid under high temperature aqueous conditions. The catalyst exhibited high conversion and selectivity, as well as excellent stability and reusability.
Article
Engineering, Chemical
Wenkai Chen, Kuiyi You, Yanan Wei, Fangfang Zhao, Zhenpan Chen, Jian Wu, Qiuhong Ai, He'an Luo
Summary: A low-polymeric VOx/SG catalyst has been developed for highly selective propane dehydrogenation (PDH) to propylene, showing high selectivity, good conversion, and excellent regenerability, with promising industrial application prospects.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Inorganic & Nuclear
Yanfei Zhang, Liang Qi, Xiaomin Zhang, Qike Jiang, Peng Lu, Lei Xu, Alexis T. Bell
Summary: A unique method using urea-assisted dry-gel synthesis was employed to prepare sheet-like Silicalite-1 single crystals with intracrystalline macropores (HMS-Silicalite-1). These crystals exhibited enhanced catalytic performance compared to conventional Silicalite-1 and hierarchical macro/microporous Silicalite-1, making them highly efficient catalysts for diffusion-limited reactions.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Anupam Sarkar, Ajay Kumar Jana, Srinivasan Natarajan
Summary: Two new two-dimensional layered compounds were prepared using a specific metalloligand, with one of them also explored for its potential as a proton conductor.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
G. B. Veselov, E. Ilyina, M. Trenikhin, A. A. Vedyagin
Summary: This work studied the application of the Ni-Mg-O oxide system in the oxidative dehydrogenation of ethane and synthesized samples using the sol-gel method to achieve high textural characteristics. The addition of the Ni-Mg-O component significantly increased ethylene yield without decreasing selectivity. The redox properties of the Ni-Mg-O system were also investigated.
KINETICS AND CATALYSIS
(2022)
Article
Chemistry, Physical
G. B. Veselov, E. V. Ilyina, A. A. Vedyagin
Summary: In this study, the process of ethane dehydrogenation over the Ni-Mg-O/V-Mg-O catalytic system prepared by a sol-gel method was investigated. The simultaneous use of V-Mg-O and Ni-Mg-O oxide components resulted in a significant increase in ethylene yield. The activity of the Ni-Mg-O system in side reactions such as ethane hydrogenolysis and ethylene decomposition was also studied.
KINETICS AND CATALYSIS
(2022)
Article
Nanoscience & Nanotechnology
Jennifer L. Troiano, Robert H. Crabtree, Gary W. Brudvig
Summary: Anchoring groups are important for attaching small molecules to metal oxide surfaces, such as in water-splitting dye-sensitized photoelectrochemical cells (WS-DSPECs). In this study, the surface loading of the silatrane anchoring group on titanium dioxide surfaces was optimized. The researchers found that previous methods resulted in low surface coverage, but they were able to uncover factors contributing to this issue and develop methods to greatly improve surface coverage, particularly through the use of a benzoic acid additive.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Marina Perez-Jimenez, Jesus Campos, Jesus Jover, Santiago Alvarez, Ernesto Carmona
Summary: LiCH3 and LiCH2CH3 react with complex [Mo-2(H)(2)(μ-Ad(Dipp2))(2)(thf)(2)] (1 center dot thf) to form complexes with coordination of LiCH2R (R=H, CH3). Computational studies reveal the existence of five-center six-electron bonding within the H-Mo(sic)Mo-C-Li metallacycles, with predominantly ionic Li-C and Li-H interactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Sonia Bajo, Cyril A. Theulier, Jesus Campos
Summary: We investigated the catalytic applications of a pincer-type rhodium-germyl complex in several transformations, including semi-hydrogenation of internal alkynes, isomerization of olefins, and hydrosilylation of alkynes. The catalyst with the germyl fragment showed superior selectivity towards E-isomers compared to other rhodium precursors. To enhance this selectivity, a tandem catalytic protocol that incorporated the use of a heterogeneous catalyst for semi-hydrogenation of internal alkynes was developed.
Article
Chemistry, Physical
Miquel Navarro, Macarena G. Alferez, Morgane de Sousa, Juan Miranda-Pizarro, Jesus Campos
Summary: A series of gold(I)-ethylene pi-complexes containing bulky phosphine ligands have been synthesized, and the importance of these ligands in stabilizing the gold(I)-ethylene bond and preventing decomposition has been discovered. By improving the catalyst structure and reaction conditions, the catalytic performance in the hydroamination of ethylene can be enhanced.
Article
Chemistry, Multidisciplinary
Nereida Hidalgo, Juan Jose Moreno, Ines Garcia-Rubio, Jesus Campos
Summary: The organometallic chemistry of 4d and 5d transition metals has mainly focused on closed-shell states. Although the reactivity of their metalloradical species is remarkable, its mechanistic understanding is limited. This study presents the synthesis and characterization of two mononuclear Ir-II species, including the first dinitrogen adduct. Experimental and computational investigations are performed to elucidate the mechanism of this transformation in Ir-II compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Inorganic & Nuclear
Juan J. Moreno, Alejandra Pita-Milleiro, Ana Luque-Gomez, Maria F. Espada, Joaquin Lopez-Serrano, Jesus Campos
Summary: The combination of Lewis acidic Ir(III) cation and Lewis basic Pt(0) compound offers potential for bond activation and catalysis. The study uncovers a cooperative cleavage reaction of dihydrogen and provides evidence for a synergistic route rather than a genuine FLP-type activation. The whole process involves equilibrium processes and the Bronsted catalyzed hydrogenation.
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
(2023)
Article
Chemistry, Inorganic & Nuclear
Alejandra Pita-Milleiro, Macarena G. Alferez, Juan J. Moreno, Maria F. Espada, Celia Maya, Jesus Campos
Summary: The divergent reactivity of a cationic iridium complex toward organolithium and Grignard reagents is discussed. The Cp* ligand exhibits unexpected electrophilic behavior towards organolithium reagents and can also undergo facile deprotonation in the presence of less nucleophilic organolithium reagents. Weaker alkylating agents effectively achieve alkylation of the metal center, and the reactive iridium(III) alkyls participate in subsequent reactions.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Applied
Tanpreet Kaur, Xia Shao, Mami Horikawa, Liam S. Sharninghausen, Sean Preshlock, Allen F. Brooks, Bradford D. Henderson, Robert A. Koeppe, Alexandre F. DaSilva, Melanie S. Sanford, Peter J. H. Scott
Summary: This report compares four different routes for the clinical-scale radiosynthesis of the kappa-opioid receptor antagonist [11C]LY2795050. Palladium-mediated radiocyanation and radiocarbonylation of an aryl iodide precursor, as well as copper-mediated radiocyanation of an aryl iodide and an aryl boronate ester, have been investigated. Full automation of all four methods is reported, each of which provides [11C]LY2795050 in sufficient radiochemical yield, molar activity, and radiochemical purity for clinical use. The advantages and disadvantages of each radiosynthesis method are compared and contrasted.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2023)
Article
Chemistry, Multidisciplinary
Miquel Navarro, Markus Holzapfel, Jesus Campos
Summary: A cavity-shaped gold(I) complex derived from a bulky tri-(ortho-biaryl)-phosphine ligand exhibits preferred selectivity towards terminal functionalities in the gold(I)-catalysed hydration of alkynes under mild heating, thanks to a well-defined pocket as the catalytic active site. This selectivity differs from other gold(I) complexes with bulky phosphine ligands, which show reduced selectivity or similar behavior towards both internal and terminal alkynes. We also explore the potential of gold(III) derivatives for the same catalytic process.
Review
Chemistry, Multidisciplinary
Marina Perez-Jimenez, Helena Corona, Felipe de la Cruz-Martinez, Jesus Campos
Summary: In this review, we discuss the strategy of donor-acceptor interactions for capturing and activating carbon dioxide. We categorize the systems into metal-free examples, main group-transition metal combinations, and transition metal heterobimetallic complexes, and summarize one hundred compounds with cooperative CO2 activation by donor-acceptor interactions. This perspective provides an overview of the wide variety of structural motifs and assesses the limitations and prospects for developing catalytic protocols for CO2 functionalization.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Miquel Navarro, Markus Holzapfel, Jesuïs Campos
Summary: We have examined the use of a cavity-shaped phosphine to facilitate the insertion of CO2 into Au-OH and Au-NH bonds. This approach allows access to various unusual species, including monomeric gold(I) carbonate, carbamate, urea, or hydride complexes. We have also discovered a cavity-shaped linear gold(I) hydroxide complex that serves as a platform for accessing unique gold monomeric species. This study contributes to the understanding of the reactivity and versatility of gold compounds.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Marina Perez-Jimenez, Jesus Campos
Summary: Starting with the first σ-H2 complex reported by Kubas in 1984, the bonding between σ-E-H bonds of main group elements and transition metals has become a fundamental topic in organometallic chemistry. Although organometallic reagents with metal-carbon bonds are commonly used, the description of transition metal σ-E-C complexes (E = main group metal) is lacking. This perspective work aims to question the possibility of defining such complexes that revolve around M-C-E motifs.
Article
Chemistry, Multidisciplinary
Marta Fernandez-Buenestado, Rosie J. Somerville, Joaquin Lopez-Serrano, Jesus Campos
Summary: We present a novel iridium system with a long-tethered PGeP ligand, which allows access to the less common germylene form, never reported before for an 'NHC-type' Ge ligand. Computational studies confirm its bonding, and we demonstrate its application in the catalytic dehydrogenation of formic acid, showcasing the potential of this underdeveloped ligand type.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Macarena G. Alferez, Juan J. Moreno, Celia Maya, Jesus Campos
Summary: This study provides a systematic investigation on the cooperative interaction between Lewis basic Rh(i) compounds and highly congested Lewis acidic Au(i) species. The non-innocent role of the (C5Me5)(-) ligand and the direct implication of the gold fragment in unusual bimetallic ligand activation event are demonstrated. The formation of dinuclear Lewis adducts and the selective control of reactivity by modifying ligand properties are also investigated.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Rosie J. Somerville, Andryj M. Borys, Marina Perez-Jimenez, Ainara Nova, David Balcells, Lorraine A. Malaspina, Simon Grabowsky, Ernesto Carmona, Eva Hevia, Jesus Campos
Summary: This article reports a study on a complex molecule of lithium nickelate benzyne. By evaluating its reactivity, the researchers discovered that this classical molecule is actually a unique octanuclear complex and confirmed it through X-ray crystallography and NMR studies. This finding provides new insights into organonickel chemistry and catalysis.
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)
