Article
Chemistry, Inorganic & Nuclear
Carlos J. Laglera-Gandara, Pablo Rios, Francisco Jose Fernandez-de-Cordova, Marina Barturen, Israel Fernandez, Salvador Conejero
Summary: The study revealed that low electron count Pt(II) complexes react with tertiary hydrogermanes to generate platinum(II) germyl derivatives. Through low-temperature NMR studies, some of the cr-GeH intermediates were detected and characterized, which further evolved into platinum-germyl species. Computational analysis suggested that the interaction between the H-Ge bond and the platinum center involves both donation and backdonation of electrons. Additionally, primary and secondary hydrogermanes also produced platinum-germyl complexes.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Erik T. Ouellette, Ambre Carpentier, I. Joseph Brackbill, Trevor D. Lohrey, Iskander Douair, Laurent Maron, Robert G. Bergman, John Arnold
Summary: Salt metathesis reactions between a low-valent rhenium(I) complex and a series of amidinate-supported tetrylenes led to the formation of rhenium metallotetrylenes with varying extents of Re-E multiple bonding. Temperature played a crucial role in the reactions, leading to isolation of unusual products under different conditions, reflecting the complexity of these metal complexes. Bonding interactions within these complexes were discussed through various spectroscopic, structural, and computational investigations.
DALTON TRANSACTIONS
(2021)
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
Liangliang Cai, Yuli Huang, Dingguan Wang, Wenjing Zhang, Zhuo Wang, Andrew T. S. Wee
Summary: Supramolecular self-assembly provides a pathway for nanopatterning and functionality. This study demonstrates the controllable fabrication of distorted Kagome lattice by using a conformationally flexible precursor on a cold Ag(111) substrate and adjusting the deposition rate.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Olaya Gomez-Paz, Rosa Carballo, Ana B. Lago, Inmaculada Prieto, Ezequiel M. Vazquez-Lopez
Summary: Three coordination compounds were synthesized and characterized from the reaction of copper(ii) bromide with the flexible bis-tetrazole organosulfur ligand, 1,2-bis(1-methyl-1H-tetrazole-5-ylthio)ethane (bmtte). Different reaction conditions led to the formation of polymeric 2 & INFIN;Cu2Br4(bmtte) (1), trinuclear [Cu3Br4(bmtte)(2)] (2), and tetranuclear [Cu2Br2(bmtte)](2) (3) compounds with different structures. The thermal stability, aqueous behavior, and reactivity of the compounds were investigated, and a new polymeric compound (8Cu4I4)-Cu-2(bmtte)(2) (4) was prepared through solid-state reaction and microwave irradiation. The redox behavior of the compounds was analyzed by cyclic voltammetry.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Jose M. Lopez-de-Luzuriaga, Miguel Monge, Sonia Moreno, M. Elena Olmos, Maria Rodriguez-Castillo
Summary: This study controlled the number of Au-I and Au-I...Pb-II contacts in a decanuclear complex by metallophilic and pi-stacking interactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Chemistry, Multidisciplinary
Xianlong Zhou, Huanyu Jin, Bao Yu Xia, Kenneth Davey, Yao Zheng, Shi-Zhang Qiao
Summary: The physicochemical properties of metal-organic frameworks (MOFs) depend on composition, topology, and porosity, which can be tuned via synthesis. Postsynthesis modulations of MOFs significantly expand the application, permitting regulation of MOF structure by cleaving chemical bonds at the molecular level, mainly applied in energy storage and conversion.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Simon G. Rachor, Robert Mueller, Martin Kaupp, Thomas Braun
Summary: The hydrogen bonding in the Au(I) complex [Au(F . HF)(SPhos)] has been analyzed by IR and NMR measurements and confirmed by DFT calculations. Comparisons to complexes with NHC ligands showed similar bonding situations. Single crystal X-ray diffraction studies demonstrated the presence of halogen bonds to Au(I) fluorido complexes in the solid state.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Yongliang Wei, Xiaowen Yang, Minghui Tian, Xue Wang, Tongdao Wang
Summary: The coordination of the B-H bond to a transition metal is of fundamental interest due to its relevance to the transition metal-mediated B-H bond activation mechanism and catalysis. While most reported examples involve sigma-borane/borate complexes with one or two sigma-B-H bonds, compounds with three such bonds are much less common. This study presents a facile synthesis approach for rare transition metal tris(sigma-B-H) borate complexes by salt elimination using [Cp*RuCl](4) and lithium trihydroborates Li[ArBH3] with 2,6-disubstituted aryl groups. These complexes exhibit remarkable thermal stability in solution and feature the unusual sigma-complex with three labile sigma-B-H bonds.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Parveen Kumar, Joonas Komulainen, Antonio Frontera, Jas S. Ward, Christoph Schalley, Kari Rissanen, Rakesh Puttreddy
Summary: Homoleptic [L-I-L](+) iodine(I) complexes were synthesized via the [L-Ag-L](+)-> [L-I-L](+) cation exchange reaction. In solution, the amines form [R3R2R1N-Ag-NR1R2R3](+) silver(I) complexes, which crystallize out as the meso-[L-Ag-L](+) complexes. Density functional theory calculations showed different interaction energies for Ag+-N and I+-N in silver(I) and iodine(I) complexes. X-ray crystal structures revealed unique short contacts between the silver(I) cation and flexible N-alkyl/N-aryl groups.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jia Yu Hu, Dejin Jiao, Xing Peng Hao, Xiangren Kong, Xin Ning Zhang, Miao Du, Qiang Zheng, Zi Liang Wu
Summary: A facile and effective strategy to fabricate tough metallosupramolecular elastomers is demonstrated by one-pot polymerization of aqueous precursor solutions containing commercial agents and Zr4+ ions. The obtained elastomers are transparent and extremely tough, with tunable mechanical properties and adhesion ability. This eco-friendly method has great potential for applications in wearable soft electronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Marte S. M. Holmsen, David Vesseur, Yago Garcia-Rodeja, Karinne Miqueu, Didier Bourissou
Summary: The possibility of ring-opening of Au-III sigma-cyclopropyl complexes to form p-allyl complexes was investigated. The transformation was observed in (P,C)-cyclometalated complexes at -50 degrees C within hours and was later generalized to other ancillary ligands. Density Functional Theory (DFT) calculations revealed the mechanism of the transformation to be a disrotatory electrocyclic ring-opening. The existence of C-C agostic interactions at Au-III in cationic sigma-cyclopropyl complexes was supported by careful analysis of their structure and bonding.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Rex S. C. Charman, Josie A. Hobson, Ross A. Jackson, Mary F. Mahon, Samuel E. Neale, David J. Liptrot
Summary: In this study, two acyclic boryl complexes, (6-Dipp)CuB(OMe)2 and (6-Dipp)CuB(OMe)NMe2, were synthesized and their similar reactivities were demonstrated.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jiaxin Chen, Lu Huang, Lifang Wu, Yichi Zhang, Rong Zhang, Yinhuan Li, Yunqing Zhao, Liliang Wang, Dewei Feng, Mitsuo Kira, Zhenyang Lin, Zhifang Li
Summary: Researchers report a facile strategy for the synthesis of low-symmetric homometallic clusters and reveal a novel stabilization mode, intramolecular sigma-aromatization. Electronic structure analyses show that these clusters possess a ten-electron sigma-aromatic system and a polarity-tunable bonding.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jiaxin Chen, Lu Huang, Lifang Wu, Yichi Zhang, Rong Zhang, Yinhuan Li, Yunqing Zhao, Liliang Wang, Dewei Feng, Mitsuo Kira, Zhenyang Lin, Zhifang Li
Summary: Intramolecular pi-aromatization is a common trait in organic compounds, but has been less studied in metal clusters. A facile strategy has been developed to synthesize low-symmetric homometallic clusters with intramolecular sigma-aromatization. These clusters possess a ten-electron sigma-aromatic system and a polarity-tunable exo-Au-Au bond.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Dipak Kumar Roy, Tobias Troster, Felipe Fantuzzi, Rian D. Dewhurst, Carsten Lenczyk, Krzysztof Radacki, Conor Pranckevicius, Bernd Engels, Holger Braunschweig
Summary: The research focuses on synthesizing and authenticating a heterocyclic compound containing the alkaline earth metal beryllium that exhibits significant antiaromaticity, and delving into its chemical properties in terms of reduction and Lewis-base-coordination chemistry using spectroscopic, structural, and computational techniques.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Ahmed M. Mansour, Krzysztof Radacki, Ola R. Shehab
Summary: Screening for potential antimicrobial drugs using metal-based compounds has shown unexpectedly high hit rates compared to organic compounds. The influence of the axial ligand on the antimicrobial activity against various pathogens and healthy cells was studied, along with compatibility with red blood cells. The stability of the compounds in the presence of a lysozyme protein was also examined for insight into activation profiles.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Asim Kumar Swain, Krzysztof Radacki, Holger Braunschweig, Prince Ravat
Summary: In this manuscript, a stereospecific synthesis of C-2- and C-1-symmetric pyrene-fused [7]helicene compounds 1 and 2 was portrayed, and their properties and enantiomerization barrier were compared.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Correction
Chemistry, Organic
Asim Kumar Swain, Krzysztof Radacki, Holger Braunschweig, Prince Ravat
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Felix Full, Quentin Woelflick, Krzysztof Radacki, Holger Braunschweig, Agnieszka Nowak-Krol
Summary: This article describes the synthesis and characterization of laterally extended azabora[5]-, [6]- and -[7]helicenes using N-heteroaromatic and dibenzo[g,p]chrysene building blocks. The enlargement of the pi-conjugated systems of azaborole helicenes led to compounds with improved optical properties. The combination of lateral and helical extensions resulted in a compound with a high luminescence quantum yield and dissymmetry factor, superior to its non-extended congener. The study suggests that helical and lateral extensions are viable strategies to enhance the features of azaborole helicenes.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Yohsuke Yamamoto, Yuan Shi, Takashi Masui, Daigo Saito, Tatsuya Inoue, Hitomi Sato, Chisato Dohi, Emiko Muneta, Rong Shang, Masaaki Nakamoto
Summary: In this study, triaryl-substituted cationic carbon compounds with a moderately flexible 7-6-7-ring skeleton and sulfur donors were synthesized and characterized to stabilize S(N)2 transition state-like penta-coordinate carbon species. The electronic effects of para substituents (R = Cl, F, H, CH3, SMe, OMe) and a planar bidentate thioxanthene derivative were systematically investigated and shown to have significant impact on the bonding in these compounds.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Satoru Muramatsu, Keijiro Ohshimo, Yuan Shi, Motoki Kida, Rong Shang, Yohsuke Yamamoto, Fuminori Misaizu, Yoshiya Inokuchi
Summary: In this study, the electronic and geometrical structures of hypervalent penta-coordinate carbon compounds were characterized using gas-phase techniques. The coexistence of tetra- and penta-coordinate isomers was confirmed for a compound with moderately electron-donating ligands, consistent with solution characterizations. This difference depends on the environment and reflects the lower activation barrier of the S(N)2 reaction found in neutral solvent or gas-phase reactions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Josina L. Bohlen, Lukas Endres, Regina Drescher, Krzysztof Radacki, Maximilian Dietz, Ivo Krummenacher, Holger Braunschweig
Summary: The rare alkyl-substituted boroles were synthesized through aluminum-boron exchange reaction. Sterically crowded aryl groups prevent dimerization and allow access to monomeric derivatives. The alkyl substituents significantly modify the optical and electronic properties compared to the perarylated boroles.
Article
Chemistry, Inorganic & Nuclear
Ahmed M. Mansour, Rabaa M. Khaled, Krzysztof Radacki, Zeina Younes, Mariam Gamal, Beatrice Guirguis, Gamal A. E. Mostafa, Essam A. Ali, Ola R. Shehab
Summary: Human acute monocytic leukaemia cells were more sensitive to a Ru(ii) carbonyl complex (IC50 = 7.13 ± 0.8 μM) with a diphenyl pyridyl phosphine coligand under dark conditions compared to a Mn(i) analogue (IC50 = 54.58 ± 4.1 μM). Both complexes showed no toxicity to healthy mouse bone marrow cells.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Ahmed M. Mansour, Krzysztof Radacki, Gamal A. E. Mostafa, Essam A. Ali, Ola R. Shehab
Summary: This study reports a new catalyst-free [3 + 2] cycloaddition reaction for the synthesis of triazolate complexes. The structures of the complexes and the properties of the reaction products were revealed through theoretical calculations and natural bond analysis.
Article
Materials Science, Multidisciplinary
J. Ruiz-Fuertes, A. Friedrich, N. Garg, V Monteseguro, K. Radacki, D. Errandonea, E. Cavalli, P. Rodriguez-Hernandez, A. Munoz
Summary: In this study, the structure of the potentially scintillating high-pressure phase of beta-MgMoO4 (gamma-MgMoO4) was solved using high-pressure single-crystal x-ray diffraction. It was found that the phase transition is isosymmetrical and involves changes in Mo coordination and crystal axes stretching. The study also investigated the compressibility and electronic structure differences between different phases of MgMoO4, shedding light on the superior scintillation properties of MgWO4 compared to MgMoO4.
Article
Chemistry, Inorganic & Nuclear
Danira A. Habashy, Rabaa M. Khaled, Amr Y. Ahmed, Krzysztof Radacki, Salma K. Ahmed, Engy K. Tharwat, Hana Magdy, Alaa Zeinhom, Ahmed M. Mansour
Summary: The cytotoxicity of two tricarbonyl Mn(I) complexes towards triple negative breast cancer was reported, with compound B showing dose-dependent cytotoxicity and a significant reduction in cell viability when co-treated with paclitaxel.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Yoshitaka Kimura, Leonardo Lugo-Fuentes, Souta Saito, J. Oscar C. Jimenez-Halla, Joaquin Barroso-Flores, Yohsuke Yamamoto, Masaaki Nakamoto, Rong Shang
Summary: Stabilization of low oxidation gold anions as aurate or auride has been a challenge in synthetic chemistry. This study reports a modular synthesis of a boron, nitrogen-containing heterocyclic carbene at a gold center, which allows electronic tunability.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Nourhan M. Ibrahim, Rabaa M. Khaled, Mohamed A. Ragheb, Krzysztof Radacki, Ahmad M. Farag, Ahmed M. Mansour
Summary: The study examined the release mechanism of CO molecules, photolysis characteristics, and cytotoxicity of [RuCl2(CO)(2)L-R] compounds on breast cancer cells. Illumination increased the cytotoxicity of the compounds, with released CO and metal fragments potentially being the main causes of cytotoxicity.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Ahmed M. Mansour, Krzysztof Radacki, Ola R. Shehab
Summary: The introduction of a propyl-sulfonic acid group at N1 of the coordinated ligand gives rise to a water-soluble complex that can bind to lysozyme through non-covalent interactions. This complex shows selective moderate toxicity against Cryptococcus neoformans and exhibits no cytotoxicity to healthy HEK293 cells.
DALTON TRANSACTIONS
(2021)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)
