Article
Chemistry, Physical
Lin Zhang, Bin Wang, Yaqi Zhao, Min Pu, Shubin Liu, Ming Lei
Summary: The study revealed that bases containing metal cations follow the metal cation-assisted (MCA) mechanism, while organic bases without metal cations follow the ion pair-assisted (IPA) mechanism. Bases with metal cations showed higher catalytic efficiency compared to bases without metal cations, indicating the important role of metal cations in the reaction.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Dewald P. van Heerden, Vincent J. Smith, Himanshu Aggarwal, Leonard J. Barbour
Summary: This study investigates the structural changes and gas adsorption mechanisms of a MOF under different gas pressures using single-crystal X-ray diffraction data. The results show that alkane transport through seemingly nonporous systems is facilitated by a turnstile mechanism, and inflections in the adsorption isotherms are attributed to gate-opening without the creation of new accessible space.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Organic
Dejiang Zhang, Zhi Xu, Ting Tang, Liyuan Le, Cairong Wang, Nobuaki Kambe, Renhua Qiu
Summary: In this study, a general method for the synthesis of unsymmetric diarylmethanes from (hetero)aryl methylhalides and Sb-aryl stibines is described. The protocol has a broad substrate scope and good functional group tolerance. Gram-scale synthesis of drug molecules and their derivatives was efficiently achieved using this method.
Article
Chemistry, Inorganic & Nuclear
Ting Tang, Dejiang Zhang, Liyuan Le, Zhi Xu, Hao Lu, Shuang-Feng Yin, Nobuaki Kambe, Renhua Qiu
Summary: In this study, an efficient copper-catalyzed cross-coupling reaction of terminal alkynes with chlorostibine 1a was described, which can synthesize a variety of Sb-alkynyl stibines. The protocol exhibited good functional group tolerance and broad substrate scope, and the obtained Sb-alkynyl stibines were utilized as effective coupling partners for the preparation of 1,2,3-triazoles. The catalytic mechanism was also proposed.
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
George Rajendra Kumar, Mengxi Yang, Benyu Zhou, Francois P. Gabbai
Summary: The synthesis, structure, and characterization of an antimony-rhodamine derivative with a phenyl-antimony moiety installed at the 10' position of the central ring are described. This compound exhibits red fluorescence (lambda(em) = 655 nm) with a quantum yield of 12% in acetonitrile.
MENDELEEV COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Vladimir V. Sharutin, Olga K. Sharutina, Andrey N. Efremov, Sergey A. Adonin
Summary: The reaction between 2-methoxyphenyllithium and SbCl3 produces tris(2-methoxyphenyl)antimony. Its further treatment with equimolar amount of I-2 leads to stihorane, while heating with 2 equivalents of I-2 results in iodotris(2-methoxyphenyl)stibonium triiodide featuring halogen bonding in solid state.
MENDELEEV COMMUNICATIONS
(2022)
Article
Chemistry, Organic
Hazuki Inami, Yusuke Inagaki, Wataru Setaka
Summary: In this study, the relative energies among three rotamers of a substituted phenyltriptycene were investigated by exploiting the CH/pi-interaction between a peri-hydrogen and phenyl. The results obtained should facilitate the design of novel molecular switches and/or molecular rotors.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2022)
Article
Chemistry, Organic
Shanqi Guo, Kehui Han, Di Wang, Yanchun Guo, Shuxia Cao, Yufen Zhao
Summary: In the presence of PR3 organocatalyst, the zwitterionic intermediate acts as a base to catalyze the formation of hydrospirophosphorane, which then reacts with electron-deficient alkenes to form spirophosphoranes with a pentacoordinate P-C bond. This reaction represents a novel and efficient method for the hydrophosphorylation of alkenes under organocatalysis.
ASIAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Celine Mariette, Philippe Rabiller, Laurent Guerin, Claude Ecolivet, Ilya Frantsuzov, Bo Wang, Shane M. Nichols, Philippe Bourges, Alexei Bosak, Yu-Sheng Chen, Mark D. Hollingsworth, Bertrand Toudic
Summary: Aperiodic crystals possess long-range order without translational symmetry and can recover periodicity in higher dimensional spaces. This paper focuses on the phase transitions within crystallographic superspaces and presents a comprehensive study of a prototype composite host-guest family of materials.
Article
Chemistry, Physical
Wenming Liu, Shenyou Yang, Qiuli Zhang, Tianyao He, Yiwei Luo, Jinxiong Tao, Daishe Wu, Honggen Peng
Summary: A series of nano-flower sheet-like alumina spheres were designed and synthesized to stabilize Ru-CeOx catalysts for the catalytic total oxidation of propane. The material exhibited low conversion temperature and activation energy, as well as superior resistance to water, sulfur, and carbon dioxide, along with good recycling performance. The excellent catalytic performance is attributed to the rich unsaturated pentacoordinate Al3+ sites on the NF-Al2O3 material, which anchor the Ru-CeOx active species and promote dispersion and stability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Sofie K. Jensen, Mathias S. Neumann, Rikke Frederiksen, Mathias L. Skavenborg, Mads C. Larsen, Stinne E. Wessel, Jan O. Jeppesen
Summary: Controlling the movement of CBPQT(4+) ring is essential for the full potential utilization of artificial molecular machines. In this study, two isomeric tri-stable [2]rotaxanes incorporating TTF and MPTTF units were synthesized to measure the energy barriers during the movement of CBPQT(4+) ring. By strategically exchanging thiomethyl barriers with thioethyl groups, the movement of CBPQT(4+) ring in the synthesized compounds can be controlled to occur in only one direction. Cyclic voltammetry and H-1 NMR spectroscopy were used to investigate the switching mechanism. The results demonstrate the first successful induction of directional movement of CBPQT(4+) ring in molecular machines using a combination of TTF and MPTTF units with 90% efficiency.
Article
Physics, Fluids & Plasmas
Barbara Wolnik, Anna Nenca, Adam Dzedzej, Bernard De Baets
Summary: This paper discusses two-dimensional cellular automata with rotation symmetry and number conservation. It is shown that if the number of states k is smaller than or equal to six, then each rotation-symmetric number-conserving cellular automaton is isomorphic to some k-ary one. However, an example of a seven-state rotation-symmetric number-conserving cellular automaton is provided in this paper, which demonstrates the importance of not only focusing on cellular automata with {0, 1, ..., k-1} as state sets.
Article
Chemistry, Inorganic & Nuclear
Gabriel Dunes, Albert Soran, Cristian Silvestru
Summary: A series of new organopnictogen compounds were synthesized via salt elimination reactions, and their structures and properties were characterized.
DALTON TRANSACTIONS
(2022)
Article
Biochemistry & Molecular Biology
Ananya Das, Chen Bao, Dmitri N. Ermolenko
Summary: In this study, two independent FRET assays were used to confirm that pre-translocation ribosomes without EF-G can undergo spontaneous intersubunit rotations between non-rotated and rotated conformations. The fraction of spontaneously fluctuating molecules changes depending on experimental conditions, highlighting the importance of using multiple FRET assays in studies of ribosome dynamics and emphasizing the role of thermally-driven large-scale ribosome rearrangements in translation.
JOURNAL OF MOLECULAR BIOLOGY
(2023)
Article
Agriculture, Multidisciplinary
Luan Pierre Pott, Telmo Jorge Carneiro Amado, Rai Augusto Schwalbert, Geomar Mateus Corassa, Ignacio Antonio Ciampitti
Summary: This study developed a satellite-based data fusion approach to map crop rotation at field-scale and analyze the effects of environmental factors on crop yields in southern Brazil. The results showed that continuous soybean planting and one-year soybean with one-year corn rotation were the most common crop rotation patterns in the region. The study also found that crop rotation had significant effects on soybean yields, with variations depending on the regions and years of rotation. Furthermore, climate conditions and soil organic carbon were identified as important factors influencing crop rotation. This study provides the first crop rotation map for the state of Rio Grande do Sul and serves as a foundation for similar databases in other states and countries.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2023)
Article
Chemistry, Inorganic & Nuclear
Yuan Shi, Takuya Suguri, Satoshi Kojima, Yohsuke Yamamoto
JOURNAL OF ORGANOMETALLIC CHEMISTRY
(2015)
Article
Chemistry, Inorganic & Nuclear
Naoto Maeta, Junki Yamamoto, Shin-ichi Fuku-en, Rong Shang, Yohsuke Yamamoto
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
(2015)
Article
Chemistry, Multidisciplinary
Yasuyuki Imada, Tomomi Kukita, Hideyuki Nakano, Yohsuke Yamamoto
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
(2016)
Article
Chemistry, Multidisciplinary
Tatsuya Hirofuji, Toshiaki Ikeda, Takeharu Haino, Yohsuke Yamamoto, Atsushi Kawachi
CHEMISTRY-A EUROPEAN JOURNAL
(2016)
Article
Chemistry, Inorganic & Nuclear
Joel D. Smith, Jessamyn R. Logan, Lauren E. Doyle, Richard J. Burford, Shun Sugawara, Chiho Ohnita, Yohsuke Yamamoto, Warren E. Piers, Denis M. Spasyuka, Javier Borau-Garcia
DALTON TRANSACTIONS
(2016)
Article
Chemistry, Inorganic & Nuclear
Shogo Morisako, Rong Shang, Yohsuke Yamamoto
INORGANIC CHEMISTRY
(2016)
Article
Chemistry, Organic
Airi Tamaki, Satoshi Kojima, Yohsuke Yamamoto
JOURNAL OF ORGANIC CHEMISTRY
(2016)
Article
Chemistry, Organic
Shin-ichi Fuku-en, Junki Yamamoto, Ko Furukawa, Daisuke Hashizume, Naomi Kawata, Yohsuke Yamamoto
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY
(2017)
Article
Chemistry, Multidisciplinary
Yasuyuki Imada, Hideyuki Nakano, Ko Furukawa, Ryohei Kishi, Masayoshi Nakano, Hitoshi Maruyama, Masaaki Nakamoto, Akira Sekiguchi, Masahiro Ogawa, Toshiaki Ohta, Yohsuke Yamamoto
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2016)
Article
Chemistry, Inorganic & Nuclear
Rong Shang, Souta Saito, J. Oscar C. Jimenez-Halla, Yohsuke Yamamoto
DALTON TRANSACTIONS
(2018)
Article
Chemistry, Multidisciplinary
Shin-ichi Fuku-en, Junki Yamamoto, Satoshi Kojima, Yohsuke Yamamoto
Article
Chemistry, Inorganic & Nuclear
Shun Sugawara, Manabu Abe, Yoshihisa Fujiwara, Masayuki Wakioka, Fumiyuki Ozawa, Yohsuke Yamamoto
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2015)
Article
Chemistry, Organic
Shin-ichi Fuku-en, Ko Furukawa, Takahiro Sasamori, Norihiro Tokitoh, Manabu Abe, Yohsuke Yamamoto
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY
(2015)
Article
Chemistry, Multidisciplinary
Shogo Morisako, Rong Shang, Yohsuke Yamamoto, Hiroshi Matsui, Masayoshi Nakano
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2017)
Article
Chemistry, Multidisciplinary
Atsushi Nakamoto, Yohsuke Yamamoto, Atsushi Kawachi
