Article
Biochemical Research Methods
Moolchand Kurmi, Vasantha Krishna Kadambar, Pavan Srinivas, Yernaidu Reddi, Manoranjan Panda, Michael Peddicord, Scott A. Miller, Joel Young, Hemant Bhutani, Lakshmikant Bajpai
Summary: This study investigates and reports an unusual tandem (MS/MS) fragmentation mechanism of protonated N-(triphenyl-lambda(5)-phosphanylidene) derivatives within the mass spectrometer, which generates the signature fragment triphenylphosphine oxide (TPPO). The presence of a P-O bond in the TPPO fragment contradicts the structure identified by nuclear magnetic resonance spectrometry (NMR) and single-crystal X-ray diffractometry (SXRD), which indicated a P=N bond. Synthesis and liquid chromatography-high-resolution mass spectrometry of 14 different N-(triphenyl-lambda(5)-phosphanylidene) derivatives confirmed the generation of TPPO/TPPS fragments, supporting a proposed mechanism involving intramolecular shifting of oxygen from carbon to phosphorus. The details of this work are presented in this article.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2023)
Article
Chemistry, Multidisciplinary
Andreas Boelke, Soleicha Sadat, Enno Lork, Boris J. Nachtsheim
Summary: In this study, Bis-N-heterocycle-stabilized lambda(3)-iodanes (BNHIs) based on azoles were introduced as novel structural motifs in hypervalent iodine chemistry. A performance test in various benchmark reactions showed that a bis-N-bound pyrazole substituted BNHI is the most reactive derivative. The solid-state structure of this compound was characterized through X-ray analysis, revealing strong intramolecular interactions between the pyrazole nitrogen atoms and the hypervalent iodine center.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Organic
Kui Lu, Lingyu Lei, Qijun Wei, Ting Zhou, Xiaodong Jia, Quan Li, Xia Zhao
Summary: This study reports the visible light-induced radical aryldifluoromethylation of N-arylacrylamides using [bis(difluoroacetoxy)iodo]benzene as a difluoromethylation reagent for the first time. The use of inexpensive and readily accessible reagents and mild reaction conditions make this method an alternative and practical strategy for the synthesis of difluoromethyl substituted oxindoles.
TETRAHEDRON LETTERS
(2021)
Article
Chemistry, Physical
Muhammad Zada, Desalegn Demise Sage, Qiuyue Zhang, Yanping Ma, Gregory A. A. Solan, Yang Sun, Wen-Hua Sun
Summary: A series of cobalt complexes containing N-2,4-bis(dibenzosuberyl)-6-fluorophenyl groups were synthesized and found to exhibit high catalytic activity and thermal stability in ethylene polymerization.
Article
Chemistry, Organic
Xiuxiu Wang, Ruiyue Liu, Shuyue Zhang, Ting Zhou, Xia Zhao, Kui Lu
Summary: A visible light-induced radical difluoromethylation reaction was developed for the synthesis of difluoromethylated dihydroisoquinolinones. This method employs inexpensive and readily accessible reagents, and the reaction conditions are mild, making it an efficient and practical synthetic strategy.
TETRAHEDRON LETTERS
(2022)
Article
Chemistry, Multidisciplinary
King-Him Yim, Chi-Tung Yeung, Melody Yee-Man Wong, Michael R. Probert, Ga-Lai Law
Summary: Construction of chiral lanthanide heterometallic tetrahedra was achieved by crystallization of a mixture of [Eu2L3] and [Ln(2)L(3)] (Ln=Gd, Tb and Dy) helicates. Selective formation of heterometallic tetrahedron was observed due to the sensitivity to ionic radii and the ratio of the two helicates used in the crystallization.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Yasunobu Asawa, Aleksandra V. Arsent'eva, Sergey A. Anufriev, Alexei A. Anisimov, Kyrill Yu. Suponitsky, Oleg A. Filippov, Hiroyuki Nakamura, Igor B. Sivaev
Summary: Bis(carboranyl)amides were synthesized and characterized, with one of the compounds having its crystal molecular structure determined by X-ray diffraction. Partial deboronation of the compounds upon reaction with ammonium or cesium fluoride, as well as unsuccessful attempted synthesis of a gadolinium metallacarborane, were also investigated. The stability of different conformations of Gd-containing metallacarboranes was estimated using quantum-chemical calculations, providing insights for the design of carborane ligands for synthesis purposes.
Article
Energy & Fuels
Fan Ding, Xin Jin, Tao Shen, Shan-Shan Mao, Qing Zhao, Mang-Lai Gao
Summary: Wettability is an important surface property that can be altered by various factors. In this study, a series of bis-N-heterocyclic quaternary ammonium salts were synthesized and used to modify the wettability of vermiculite and its derivatives. The results showed that the salts were successfully inserted into the vermiculite layers, resulting in the formation of an organic monolayer. The wettability was found to be influenced by the layer charge of the vermiculite, the spacer length of the modifier, and the type of N-heterocyclic headgroup.
Article
Engineering, Environmental
Haonan Zhang, Wenlong Liang, Jian Xiao, Jinhao Zhao
Summary: This study presents a novel functionalized fiber with a bis (N -heterocyclic carbene) (bis(NHC)) structure, which effectively inhibits particle agglomeration during catalysis. Palladium nanoparticles were loaded onto the fiber, demonstrating both control of particle size and excellent anti-agglomeration effect. The functional fiber exhibited high catalytic activity and a wide range of substrate applications in the Heck reaction, and it could be recycled multiple times without deactivation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Lijun Wang, Jun Cheng, Yingjie Ma, Qi Chen, Xuebing Leng, Liang Deng
Summary: The synthesis and characterization of a three-coordinate iron(0) complex and its reactions with alkynes were studied, revealing its potential as an effective catalyst for specific cyclotrimerization reactions.
Article
Crystallography
Lingyi Shen, Na Xu, Mengna Jiang, Jiang Zhao, Xiaoling Xu, Xian-Jiong Yang, Qi-Long Zhang
Summary: The compound is C30H40N2NiO2, with an orthorhombic crystal structure (space group Pnma, no. 62). The lattice parameters are a = 12.8114(19) Å, b = 21.301(3) Å, c = 10.6536(16) Å, and the unit cell volume is 2907.3(8) ų. The crystallographic analyses were performed at a temperature of 273(2) K, and the refinement factors R-gt(F) and wR(ref)(F-2) are 0.0290 and 0.0808, respectively.
ZEITSCHRIFT FUR KRISTALLOGRAPHIE-NEW CRYSTAL STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Stanislav A. Paveliev, Oleg O. Segida, Uliana V. Fedorova, Olga M. Mulina, Alexander O. Terent'ev
Summary: O,O'-Bis(phthalimido)-modified 2-(hydroxyimino)ethanols containing N-O-N fragment were synthesized efficiently by reacting vinyl azides with N-hydroxyphthalimide under the influence of a hypervalent iodine-based oxidant. The reaction proceeds under mild conditions and is compatible with a wide range of vinyl azides.
MENDELEEV COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Reinald Fischer, Helmar Goerls, Regina Suxdorf, Matthias Westerhausen
Summary: Franz Hein initiated the highly regarded arylchromium chemistry one century ago with his initial publication in January 1919. The formation of bis(pi-arene)chromium compounds has been studied using pure substrates and different Lewis bases. The synthesis involves three main phases of phenyl group transfer and the origin of hydrogen atoms has been determined using labeling experiments. The results provide valuable insights into the reaction mechanisms and the formation of complexes.
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)