Review
Chemistry, Applied
Pawan Kumar, Urvashi Sharma, Guddekoppa S. Ananthnag
Summary: This article provides a detailed overview of the synthesis, reactivity, structural features, and catalytic activities of acyl phosphines and bis(acyl) phosphines reported in the last three decades. Although acyl phosphines have been known historically, their literature is not exhaustive due to the vulnerability of P-C(O) bonds toward nucleophilic substitution reactions. However, there has been a renewed interest in the synthesis of acyl phosphines and di(acyl) phosphines recently, with the examples of phosphines possessing two acyl groups found more frequently in the literature. Transition-metal complexes of acyl phosphines and di(acyl) phosphines have been moderately explored, but their catalytic applications are limited.
APPLIED ORGANOMETALLIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Minghui Zhu, Tsukasa Iwano, Mengjin Tan, Daiki Akutsu, Sayaka Uchida, Guanying Chen, Xikui Fang
Summary: In this study, we report a method of using Preyssler anion as a supramolecular template for constructing {Mo22Fe8} macrocycle. The macrocycle exhibits selective anion binding behavior in solution, and the 1:2 host-guest complex formed in the solid state can transport protons more effectively through an extended hydrogen-bonding network.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Miquel Navarro, Macarena G. Alferez, Morgane de Sousa, Juan Miranda-Pizarro, Jesus Campos
Summary: A series of gold(I)-ethylene pi-complexes containing bulky phosphine ligands have been synthesized, and the importance of these ligands in stabilizing the gold(I)-ethylene bond and preventing decomposition has been discovered. By improving the catalyst structure and reaction conditions, the catalytic performance in the hydroamination of ethylene can be enhanced.
Article
Chemistry, Organic
Megan Amy Bryden, Francis Millward, Tomas Matulaitis, Dongyang Chen, Marco Villa, Andrea Fermi, Sultan Cetin, Paola Ceroni, Eli Zysman-Colman
Summary: In this study, an alternative donor-acceptor TADF structure, pDTCz-DPmS, was reported as a photocatalyst. It exhibited better ground state reducing agent and photoreductant properties compared to 4CzIPN. The increased conjugation of pDTCz-DPmS resulted in enhanced light absorption, and prompt and delayed emission lifetimes confirmed its TADF nature. These properties made pDTCz-DPmS useful in a variety of photocatalysis reactions, including photoredox oxidative and reductive quenching reactions, dual Ni(II) cocatalyst reactions, and energy transfer processes.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jan Schulz, Reike Clauss, Aleksandr Kazimir, Sieglinde Holzknecht, Evamarie Hey-Hawkins
Summary: The synthesis of B9-Phos ligands with two carboranyl moieties and bulky electron-donating substituents, previously deemed unattainable, is reported. The electrochemical properties of B9-Phos ligands were investigated, showing the ability of mesityl derivatives to form stabilized phosphoniumyl radical cations. The B9-Phos ligands possess a highly electron-releasing character surpassing that of alkyl phosphines and commonly used N-heterocyclic carbenes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Silvia Escayola, Artur Brotons-Rufes, Naeimeh Bahri-Laleh, Francesco Ragone, Luigi Cavallo, Miquel Sola, Albert Poater
Summary: Bis(phenoxy-imine) complexes of zirconium or titanium are a type of Fenokishi-Imin catalysts that can produce poly-ethylenes with well-defined bimodal molecular weight distributions. By substituting phenyl rings with perfluorinated phenyl rings, the polymerization process can exhibit a desired unimodal behavior, with one particular isomer being stabilized.
THEORETICAL CHEMISTRY ACCOUNTS
(2021)
Article
Chemistry, Multidisciplinary
Jianghua Liu, Eduard O. Bobylev, Bas de Bruin, Joost N. H. Reek
Summary: This article reports on a gold catalyst based on azobenzene-bearing N-heterocyclic carbene, whose reactivity in a cyclization reaction is dependent on the isomeric state of the azobenzene. The configurations of the catalyst can be reversibly switched by light and remain stable during the reaction, effectively leading to a switchable catalyst system.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zhihao Yu, Xiehe Huang, Mengting Zheng, Shan-Qing Zhang, Ying Yang, Jun Lu
Summary: In this study, a self-assembled macrocyclic Cu(II) complex was designed as an effective catalyst for high-energy-density Li-S batteries. By improving the efficiency of the liquid-solid sulfur redox reaction, the capacity, cycling stability, and energy decay rate of the batteries were enhanced. This research provides important insights for the design of homogenous catalysts and the promotion of high-energy-density Li-S batteries.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Greta G. Zambo, Johannes Mayr, Michael J. Sauer, Tim P. Schlachta, Robert M. Reich, Fritz E. Kuehn
Summary: The synthesis and characterization of a novel macrocyclic and abnormally coordinating, mesoionic N-heterocyclic carbene iron complex are reported. The complex exhibits strong sigma-donor ability of the carbene moieties, indicating efficient catalytic activity in oxidation reactions. Initial tests on the epoxidation of cis-cyclooctene validate the assumption.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Zhang Qian, Cui Yan-Feng, Zhang Xia-Mei, Li Ya-Hong, Yao Jin-Lei
Summary: In this study, the utilization of bipp and pip molecules as ligands for manganese and copper ions was demonstrated. Two complexes with different structures, [Mn(bipp)(SO4)(H2O)]n (1) and [Cu(pip)(2)]ClO4 (2), were synthesized. Compound 1 showed a one-dimensional chain structure, while compound 2 exhibited a homoleptic Cu(I) complex. The research also revealed antiferromagnetic interactions in compound 1 and high catalytic activity for ketalization reactions in compound 2.
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
(2022)
Review
Chemistry, Inorganic & Nuclear
Guddekoppa S. Ananthnag
Summary: Crown ethers are cyclic polyethers that can bind to specific size and charge cations based on their ring size, donor atoms, and geometry. The introduction of other donor atoms can enhance their host-guest chemistry. Phosphorus donors can be added to the crown ethers to create hybrid ligands that selectively bind to different types of cations and transition metal centers. This review focuses on the synthesis and catalytic aspects of crown ethers, aza-crown ethers, and thia-crown ethers appended with phosphorus donors on the periphery.
COMMENTS ON INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
M. Raynal, Y. Li, C. Troufflard, C. Przybylski, G. Gontard, T. Maistriaux, J. Ide, R. Lazzaroni, L. Bouteiller, P. Brocorens
Summary: The study investigates the self-assembly behavior of amino-ester benzene-1,3,5-tricarboxamide monomers and reveals that both ester and amide carbonyls are involved in the hydrogen bond network of the dimeric species formed. Various conformations coexist in solution with rapid interconversion between them, leading to a symmetric structure. This fluxional behavior likely originates from a larger range of energetically favorable conformations accessible through rotation of the side chains.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Antonella Guerriero, Maurizio Peruzzini, Luca Gonsalvi
Summary: The newly synthesized complexes exhibit high solubility and stability in water, and were successfully used as catalysts for the hydration of benzonitrile to benzamide, achieving high conversions with a low catalyst loading.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yucheng Mu, Felix W. W. Hartrampf, Elsie C. Yu, Katherine E. Lounsbury, Richard R. Schrock, Filippo Romiti, Amir H. Hoveyda
Summary: This study introduces a new method for synthesizing trisubstituted macrocyclic olefins, which can produce stereoisomers and overcome unexpected difficulties. The effectiveness of the method is demonstrated through two examples.
Article
Chemistry, Inorganic & Nuclear
Joshua J. J. Woods, Alexia G. G. Cosby, Jennifer N. N. Wacker, Luis M. Aguirre M. Quintana, Appie Peterson, Stefan G. G. Minasian, Rebecca J. J. Abergel
Summary: This study identified two macrocyclic chelators with high stability that can effectively bind thorium and zirconium, offering promising applications in molecular imaging and therapy.
INORGANIC CHEMISTRY
(2023)
