Article
Chemistry, Inorganic & Nuclear
Seulgi Kim, In-Hyeok Park, Huiyeong Ju, Yelim Lee, Joon Rae Kim, Jong Hwa Jung, Shim Sung Lee, Eunji Lee
Summary: In the field of supramolecules, the fabrication of polyrotaxanes or poly-pseudo-rotaxanes remains a challenge. This study reports the formation of a poly-pseudo-rotaxane in which a single salt-type guest acts as both a linking and a threading agent. The use of A1/A2-thiopyridyl pillar[5]arene (L) and silver(I) trifluoroacetate in CHCl3/CH3OH produced a one-dimensional (1D) poly-pseudo-rotaxane. Surprisingly, the AgCF3CO2 guest not only linked the di-armed L ligands but also threaded into the pillar[5]arene cavity. However, a simple 1D coordination polymer was obtained in a different solvent due to the presence of a CH2Cl2 molecule in the pillar[5]arene cavity.
INORGANIC CHEMISTRY
(2023)
Article
Crystallography
Bo-Kai Ling, Ling-Yu Huang
Summary: This is a description of the crystal structure of Gd2C16H20O18F18, including its composition and crystal parameters.
ZEITSCHRIFT FUR KRISTALLOGRAPHIE-NEW CRYSTAL STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Weiwei Yang, Haiying Wang, Rong Chang, Zhitao Feng, Yumei Zhu, Andrew C. -H. Sue
Summary: The complexation between tiara[5]arene (T[5]) and silver trifluoroacetate resulted in a binuclear metallo-pseudorotaxane due to multiple endo-cavity Ag-Iη(2)-arene interactions. Additionally, two enantiomeric [(CF3CO2Ag)(2)& SUB;T[5]] complexes were bridged by an extra (CF3CO2Ag)(2) dimer through exo-wall Ag-Iη(2)-arene coordination, leading to a unique handcuff metallo-bis-pseudorotaxane structure in the solid state.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Organic
Zhuang-Zhuang Li, Wan-Di Li, Juan Fan, Jun-Ting Li, Zhong-Wen Liu, Xian-Ying Shi
Summary: Silver trifluoroacetate with dual functions is demonstrated as a convenient in situ CO source and oxidant in the palladium-catalyzed oxidative carbonylative [4 + 1] annulation of aromatic acids to construct phthalic anhydride. Mechanistic studies reveal the sequential reactions of carboxyl-assisted C-H bond activation, insertion of the in situ released CO from silver trifluoroacetate, and reductive elimination. This protocol offers simple reaction conditions and operation without the need for gaseous CO, additives, ligands, or additional CO sources or oxidants. Notably, silver trifluoroacetate serves as an unprecedented gaseous CO surrogate in carbonylation reactions, with high purity silver easily recoverable after the reaction.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Xiaomin Meng, Yirui Ouyang, Huijie Wu, Haowei Huang, Fengqian Wang, Shuo Wang, Mengchao Jiang, Lian Ying Zhang
Summary: By tuning the chemical composition and surface structure of electrodes, hierarchical palladium-silver alloy nanosheets with rich atomic defects were successfully prepared. These nanosheets exhibit much higher catalytic activity and stability compared to traditional catalysts, attributed to the optimized electronic structure of Pd, novel architecture, and rich atomic defects.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Stefan J. Raaijman, Maarten P. Schellekens, Paul J. Corbett, Marc T. M. Koper
Summary: The study found that silver can reduce CO2 to ethanol and propanol, showing potential high catalytic performance similar to copper. By exploring the effect of surface coverage on CO reduction reaction to explain the inconsistency between experimental results and theoretical calculations, a better understanding of the catalyst performance and reaction mechanism can be obtained.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Inorganic & Nuclear
Li Tang, Xi Kang, Xiangyu Wang, Xianhui Zhang, Xun Yuan, Shuxin Wang
Summary: This study presents a new method for investigating the interaction between metalloid clusters and homometal thiolates at the atomic level through isotopic exchange. It was found that all Ag atoms in the Ag-44(SR)(30) template are exchangeable, and metal exchange in the Ag-29(BDT)(12)(TPP)(4) metalloid cluster is likely a shell to kernel transfer process. These insights will guide future preparation of metalloid clusters with customized structures and properties.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Ming Huang, Changsheng Zhou, Ke-Fang Yang, Ze Li, Guo-Qiao Lai, Pinglu Zhang
Summary: This study developed an effective catalyst for the hydroborylation of cyclopropenes, resulting in the formation of cyclopylboronates that can be transformed into versatile cyclopropanes. This method works under mild reaction conditions in an open-air atmosphere and can be easily scaled up. Control experiments provide key insights into the reaction mechanism.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Yupa Wattanakanjana, Kedkanok Mookda, Kantima Muangjeen, Arunpatcha Nimthong-Roldan
Summary: Two new mononuclear complexes containing 4-phenylthiosemicarbazide were synthesized and characterized. In one complex, the bromide ion is not coordinated to the metal, while in the other complex, it forms a coordination bond. The crystal structures of the complexes demonstrate distorted tetrahedral coordination around the metal ions.
Article
Chemistry, Multidisciplinary
Erik Andris, Michal Straka, Jan Vrana, Ales Ruliska, Jana Roithova, Lubomir Rulisek
Summary: Gold(I) centers can form moderately strong (Au...H) hydrogen bonds with tertiary ammonium groups, but similar hydrogen bonding interactions with isoelectronic silver(I) or copper(I) centers are unknown. The replacement of Cl with Br or I in 3AuCl(+) had only a small effect on the Au...H bond strength. Experimental and computational results showed that the Ag...H and Cu...H interactions were only marginal in the complexes studied, while a Cl...H hydrogen bond was formed. However, when less flexible ligands were used, the presence of Ag...H and Cu...H hydrogen bonds with similar strength to the Au...H bond in 3AuCl(+) was predicted.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Kari Rissanen, Jas S. Ward
Summary: This study synthesized new iodine(I) complexes using silver(I) complexes and explored the influence of different functional substituents. The properties of these rare iodine(I) complexes containing 3-substituted pyridines were compared to their more prevalent 4-substituted counterparts.
Article
Chemistry, Physical
Elisabeth Robens, Burkhard Hecker, Hans Kungl, Hermann Tempel, Ruediger-A. Eichel
Summary: The study demonstrates that the efficiency of electrochemical reduction of carbon dioxide to ethanol can be improved by synthesizing a bimetallic catalyst of silver and copper and decreasing the copper content. By reducing the near-surface copper content from 99% to 45%, the Faradaic efficiency of ethanol increases from 5% to 23%. Furthermore, the experiment also shows that the formation of ethanol is favored over ethylene by increasing the excess of CO, lowering the copper content, and increasing the silver near-surface content.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Essi Taipale, Marcel Siepmann, Khai-Nghi Truong, Kari Rissanen
Summary: The synthesis and characterization of iodine(I) complexes with benzoimidazole or carbazole-derived sp(2) N-containing Lewis bases, as well as their corresponding silver(I) complexes, were investigated. The results showed the presence of a three-center four-electron (3c-4e) [N-I-N](+) bond in the iodine(I) complexes, with some Ag+ complexes exhibiting deviations from linearity.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Xue-Tao Wang, Lan-Tao Cheng, Cheng Chen, Lingyun Cao, Jun Zheng, Xiu-Ying Zheng
Summary: Chiral Ln-Ag(I) clusters D/L-Ln3Ag5 with C3 symmetry were prepared by using D/L-penicillamine as multidentate ligand bridging Ln3+ and Ag(I) ions, showing tunable photoluminescence from {AgS}-to-Ln3+ with different emission bands.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Junjie Qin, Tao Wang, Mingming Zhai, Chengyu Wu, Yahu A. A. Liu, Bo Yang, Hui Yang, Ke Wen, Weibo Hu
Summary: This report describes a hydroxypillar[5]arene-extended porous polymer-confined silver catalyst (PAF-PA5-Ag-0.8) for electrochemical CO2 reduction reaction (CO2RR) that selectively produces ethanol with a maximum Faradaic efficiency of 55% at 11 mA cm(-1). The study reveals that the hydroxypillar[5]arene-confined Ag clusters are the active sites for ethanol formation. Moreover, temperature-programmed desorption measurements demonstrate an enhanced adsorption strength of CO* on PAF-PA5-Ag-0.8, favoring the C-C coupling to form ethanol.
ADVANCED FUNCTIONAL MATERIALS
(2023)
