Correction
Chemistry, Inorganic & Nuclear
Alejandra Gomez-Espana, Jorge L. Lopez-Morales, Belinda Espanol-Sanchez, Pilar Garcia-Orduna, Fernando J. Lahoz, Manuel Iglesias, Francisco J. Fernandez-Alvarez
Summary: This article investigates the catalytic performance of iridium complexes in the dehydrogenation of formic acid and examines the effect of auxiliary ligands on the catalytic performance.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Shun Ge, Jia-Hao Liu, Lishan Gong, Xiu-Fang Mo, Chao Liu, Xiao-Yi Yi, Piao He
Summary: In this study, newly developed complexes of iridium and ruthenium with nitrogen-rich ligand were used for aqueous formic acid (FA) dehydrogenation. The reaction kinetics were investigated and a possible mechanism was proposed. The results showed that the nitrogen-rich ligand was effective for FA dehydrogenation, providing a theoretical basis for the development of new and effective hydrogen release systems.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Hong Liu, Wan-Hui Wang, Huatian Xiong, A. Nijamudheen, Mehmed Z. Ertem, Mei Wang, Lele Duan
Summary: This study presents a series of Cp*Ir complexes with a rigid 8-aminoquinoline sulfonamide moiety as highly efficient catalysts for the dehydrogenation of formic acid. The electron-donating and electron-withdrawing groups on the ligands were found to have different effects on the reaction steps, leading to lower optimum pH for catalytic activity with electron-withdrawing groups. Overall, this research provides important insights for catalyst design in organic chemistry.
INORGANIC CHEMISTRY
(2021)
Article
Urology & Nephrology
Susana Garcia-Abellan, Vincenzo Passarelli, Manuel Iglesias
Summary: Two Ir complexes, 2a and 2b, with the ligand [Ir(CI)(COD)(NHC)] (COD=1,5-cyclooctadiene), were synthesized through transmetallation from NHC-Ag complexes. Analogously, another Rh complex, 4, was prepared using the same method. By transmetallation from the deprotonated NHC-Ag complex, another Ir complex, 3c, with the ligand [Ir({kappa-C,N-(NHC-acetamide-1H)}(COD)], was synthesized. Similarly, [Ir(CI)(CO)(2)(NHC)] (6) and [Ir({kappa-C,N-(NHC-acetamide-1H)}(CO)(2)] (7) were obtained through carbonylation of 2b and 3c respectively. The catalytic activity of these complexes in formic acid dehydrogenation was evaluated, with the highest turnover frequency (TOF) observed in the presence of a 5:2 HCOOH/Et3N mixture. Stoichiometric experiments suggested COD hydrogenation as the preactivation step.
Article
Chemistry, Organic
Jian Guo, Chengkai Yin, Maoliang Li, Dulin Zhong, Yuguan Zhang, Xiaobin Li, Yilin Wang, Hong Yao, Tiangui Qi
Summary: A series of Cp*Ir catalysts featuring picolinamide-based ligands were reported for efficient H-2 generation from FA solution, with the in-situ generated catalyst achieving a high turnover frequency and turnover number in experiments conducted at 80 degrees C. The study discussed the substituent effect of amide N atom and proposed a plausible mechanism based on the experimental results.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Sihang Cheng, Zhongling Lang, Jing Du, Zhilu Du, Yingqi Li, Huaqiao Tan, Yangguang Li
Summary: In this study, a new series of tetrahydroquinoxaline-dioximino iridium complexes were designed and investigated, which showed improved hydrogen evolution performance of formic acid and revealed a possible dehydrogenation mechanism. These findings lay the foundation for the implementation of a green hydrogen economy.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Inorganic & Nuclear
Susana Garcia-Abellan, Vincenzo Passarelli, Manuel Iglesias
Summary: 2a and 2b [Ir(CI)(COD)(NHC)] (1,5-cyclooctadiene as COD) were synthesized by transmetallation from NHC-Ag complexes. Analogously, [Rh(CI)(COD)(NHC)] (4) was prepared. [Ir({kappa-C,N-(NHC-acetamide-1H)}(COD)] (3c) was synthesized by transmetallation from deprotonated NHC-Ag complex. [IrCp*({kappa-C,N-(NHC-acetamide-1H)}] (5) (Cp*=pentamethylcyclopentadienyl) was obtained analogously. [Ir(CI)(CO)(2)(NHC)] (6) and [Ir({kappa-C,N-(NHC-acetamide-1H)}(CO)(2)] (7) were prepared by carbonylation of 2b and 3c, respectively. The catalytic activity of these complexes in formic acid dehydrogenation was evaluated under solventless conditions, in the presence of water as a cosolvent, and in a 5 : 2 HCOOH/Et3N mixture, with the best TOF values obtained in the latter case. Stoichiometric experiments suggest COD hydrogenation as the preactivation step.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Nicolas Lentz, Martin Albrecht
Summary: This article reports on a highly efficient iridium-based catalyst for formic acid dehydrogenation. The catalyst exhibits high turnover frequencies and turnover numbers, and is characterized by its low cost and easy accessibility, making it suitable for industrial applications.
Article
Chemistry, Physical
Zhongliang Yu, Yanyan Yang, Song Yang, Jie Zheng, Xiaogang Hao, Guoqiang Wei, Hongcun Bai, Abuliti Abudula, Guoqing Guan
Summary: Efficient dehydrogenation of aqueous formic acid (FA) for hydrogen production using non-noblemetal-based heterogeneous catalysts remains challenging. In this study, a biomass-derived multifunctional gamma-Mo2N catalyst was synthesized and showed high dehydrogenation activity for aqueous FA, without significant deactivation during stability testing. Mechanism investigations revealed that the catalyst's active sites and cooperation played a crucial role in the dehydrogenation activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Pardeep Dahiya, Nidhi Garg, Rinaldo Poli, Basker Sundararaju
Summary: To achieve the goal of a carbon-free energy economy, a well-defined air-stable Cp*Co(III) catalyst has been developed for the transfer hydrogenation of quinoline derivatives and the oxidative dehydrogenation of cyclic amines in water. These findings provide new avenues for studying environmentally benign cobalt catalysts for hydrogenation and dehydrogenation reactions.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Organic
John P. Cooksey, Ourida Saidi, Jonathan M. J. Williams, A. John Blacker, Stephen P. Marsden
Summary: Valuable tetrahydro-beta- and gamma-carboline skeletons can be obtained through Pictet-Spengler cyclization initiated by acceptorless dehydrogenation of saturated cyclic amines. The substrate scope for beta-isomers is somewhat limited, but access to gamma-isomers through the more reactive 2-(aminoethyl)indoles is more general. The synthetic utility of hydrogen transfer catalysis is highlighted in the two-step preparation of the alkaloid desbromoarborescidine A by sequential redox-neutral alkylation/dehydrogenative cyclization.
Article
Chemistry, Inorganic & Nuclear
Bedraj Pandey, Jeanette A. Krause, Hairong Guan
Summary: This study reports a new Pincer ligand system and its catalytic activity and stability in catalytic hydrogenation and dehydrogenation reactions.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Soumyadip Patra, Ankit Kumar, Sanjay K. Singh
Summary: Efficient catalytic systems based on arene-Ru(II) complexes with bis-imidazole methane-based ligands were developed for additive-free hydrogen generation from formaldehyde and paraformaldehyde in water. The presence of bis-imidazole methane ligands significantly affected the catalytic performance of the studied catalysts. Among the screened complexes, a complex with the ligand [(eta(6)-p-cymene)RuCl(L)]Cl-+(-) ([Ru]-2) showed the highest turnover number (>20,000) for hydrogen gas generation from paraformaldehyde in water.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Carmen Mejuto, Laura Ibanez-Ibanez, Gregorio Guisado-Barrios, Jose A. Mata
Summary: This study describes an effective visible-light-promoted iridium catalyst that enables hydrogen production at room temperature without additives. The single iridium complex in the photocatalytic system plays a dual role in harvesting visible light and facilitating C-H cleavage and H-2 formation. The presence of specific ligands in the iridium complex is crucial for the photocatalytic transformation, and the complex also acts as an efficient catalyst for thermal reverse process under mild conditions.
Article
Chemistry, Multidisciplinary
Daniel L. Priebbenow, Carol Hua
Summary: Studies on Cp*Rh(iii)-catalyzed hydroarylation of alkenes with aryl acyl silanes revealed a new synthetic strategy to access unique silicon-based indene frameworks and benzofurans. This represents the second example of rhodium-catalyzed C-H functionalization using acyl silanes as directing groups, with intramolecular aldol condensation being the key step in the process.
CHEMICAL COMMUNICATIONS
(2021)
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)