Article
Chemistry, Multidisciplinary
Steven van Terwingen, Noah Nachtigall, Ben Ebel, Ulli Englert
Summary: The ditopic molecule HacacMePz shows versatility in coordinating to different metal ions, leading to the synthesis of mixed-metal solids with selective complexation. Further studies demonstrate the potential for selective coordination to hard and soft cations, showcasing the restricted conformational freedom of HacacMePz as a bridging ligand.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Chemistry, Inorganic & Nuclear
Kwok-Chung Law, Zhou Tang, Liangliang Wu, Qingyun Wan, Wai-Pong To, Xiaoyong Chang, Kam-Hung Low, Yungen Liu, Chi-Ming Che
Summary: A series of cyclometalated Fe(II/III) and Ru(II/III) complexes with a tetradentate dianionic [O<^>N<^>C<^>N] ligand were synthesized and characterized. The properties of the ligand significantly affect the spin state, absorption, and emission of the complexes, as revealed by various experiments and theoretical calculations.
Article
Biochemistry & Molecular Biology
Quentin Vanbellingen, Paul Servin, Anais Coinaud, Sonia Mallet-Ladeira, Regis Laurent, Anne-Marie Caminade
Summary: Pyridine, pyridine imine, and bipyridine imine ligands functionalized with phenol have been synthesized and characterized for their catalytic applications. The grafting of these ligands onto the surface of phosphorhydrazone dendrimers has shown improved complexation ability towards palladium(II), leading to enhanced catalytic efficiency in Heck couplings and Sonogashira couplings. In some cases, a positive dendritic effect has been observed, with catalytic efficiency increasing proportionally with dendrimer generation.
Article
Chemistry, Physical
Kevin I. Y. Ketchemen, Malik Dilshad Khan, Sixberth Mlowe, Matthew P. Akerman, Inigo Vitorica-Yrezabal, George Whitehead, Linda D. Nyamen, Peter T. Ndifon, Neerish Revaprasadu, Paul O'Brien
Summary: A series of metal complexes have been synthesized and characterized, showing good thermal stability and coordination of the ligand with metal ions in a bidentate chelating mode.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Inorganic & Nuclear
Bo-Kai Su, Yi-Hung Liu, Shie-Ming Peng, Shiuh-Tzung Liu
Summary: The study revealed the monodentate ligand ability of 5-phenyl-2,8-bis(2-pyridinyl)anthyridine (L) towards palladium ions, leading to the synthesis of various distinct complexes, with potential applications in Suzuki-Miyaura coupling reactions.
Article
Chemistry, Inorganic & Nuclear
E. A. Ivanova, K. S. Smirnova, I. P. Pozdnyakov, A. S. Potapov, E. V. Lider
Summary: The ligand 1-(1H-benzimidazole-1yl-methyl)-1H-benzotriazole (L) was used to synthesize five new lanthanide compounds [LnL2(H2O)(NO3)3]n (Ln = Eu3+, Sm3+, Tb3+, Dy3+, Gd3+). The complexes were characterized by elemental and powder X-ray diffraction analysis, as well as IR-spectroscopy. The structures of the coordination compounds were determined by single-crystal X-ray diffraction analysis. Energy transfer from the ligand triplet state to the central atom occurs in Eu(III), Sm(III), Tb(III), and Dy(III) compounds, and characteristic bands of lanthanide ions were observed in the emission spectra. The luminescence quantum yield of the Tb(III) complex was high (32%), making L a good energy donor for sensitization of Tb(III) photoluminescence in the solid state. Photoluminescence lifetimes for all coordination compounds under study ranged from 0.015 to 1.14 ms.
INORGANICA CHIMICA ACTA
(2023)
Article
Chemistry, Inorganic & Nuclear
Xiao-Kang Huang, Li-Ping Li, Hai-Yun Zhou, Ming-Feng Xiong, Jing-Yan Fan, Bao-Hui Ye
Summary: This article develops efficient and mild protocols to switch the photoreaction of Ir(III)-diamine complexes between different reactions under mild conditions. Mechanistic studies reveal the key reaction intermediates and reactive oxygen species involved in the process.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Jana Tomicova, Miroslava Matikova-Malarova, Juraj Kuchar, Jaroslav Briancin, Juraj Cernak
Summary: Three heteroleptic neutral complex molecules [Fe(acac)(bpy)Cl-2] (1), [Fe(acac)Cl-2(phen)] (2), and [Fe(acac)Cl-2(4dmbpy)] (3) were synthesized using solvothermal syntheses. These complexes were characterized by chemical analysis and spectroscopic methods (IR and UV-Vis), and their molecular structures were determined. The crystal structures of the complexes were stabilized by hydrogen bonds (complexes 1-3) and p-p interactions (complexes 1 and 2). The thermal stability of the complexes was found to be relatively high, with the first weight loss corresponding to the decomposition of the acac ligand. The residues of the thermal decompositions were identified as α-Fe2O3 using PXRD, SEM, and EDX.
INORGANICA CHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Pavel G. Shangin, Irina V. Krylova, Andrey V. Lalov, Anna Y. Kozmenkova, Evgeniya A. Saverina, Petr A. Buikin, Alexander A. Korlyukov, Alyona A. Starikova, Elena N. Nikolaevskaya, Mikhail P. Egorov, Mikhail A. Syroeshkin
Summary: This paper presents the reverse side of the commonly used approach in organometallic chemistry, showing a significant change in the redox properties of ligands under the influence of a redox-inert metal. The germanium derivatives based on specific ligands exhibit unique HOMO and LUMO distributions, impacting the overall redox behavior of the complexes. Additionally, the high thermal stability of these derivatives and the potential for forming supramolecular structures suggest promising prospects for new functional materials.
Article
Chemistry, Inorganic & Nuclear
Tian Xing, Chengying Jiang, Mark R. J. Elsegood, Carl Redshaw
Summary: A variety of lithiated calix[n]arenes were isolated and evaluated as catalysts for ring-opening polymerization. These complexes showed moderate activity in the polymerization process, with the mixed-metal (Li/Al) system achieving better conversions and high molecular weight polymers.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Haley M. Brennan, Sophia G. Bunde, Qiaoyue Kuang, Tana V. Palomino, Joshua S. Sacks, Steven M. Berry, Ray John Butcher, John C. Poutsma, Robert D. Pike, Deborah C. Bebout
Summary: Metallothionein-like aggregates of group 12 metal ions were synthesized and characterized, providing insights into their aggregation behavior. Complexes with Cd3S3 and Zn3S3 cores were successfully synthesized with the use of a multidentate monothiol ligand. The structures and properties of these complexes were characterized using various techniques.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Bela Urban, David Dunlop, Robert Gyepes, Pavel Kubat, Kamil Lang, Michal Horacek, Jiri Pinkas, Ludmila Simkova, Martin Lamac
Summary: Neutral zirconocene complexes were synthesized and converted to their cationic counterparts by chloride abstraction. The cationic complexes exhibited enhanced luminescence properties. The structures of the complexes were characterized by X-ray diffraction, their electrochemistry was investigated by cyclic voltammetry, and their photophysical properties were studied with quantum-chemical calculations.
Article
Chemistry, Multidisciplinary
Shuang-Shuang Ma, Rui Sun, Zi-Heng Zhang, Peng-Xin Guan, Jin-Qing Lin, Chun-Shan Li, Bao-Hua Xu
Summary: A novel half-sandwich phosphinesulfonate cobaltic complex was prepared and used for the chemoselective N,N-dimethylation of nitroaromatics. The catalytic activity could be modulated by using specific hydrosilanes.
Article
Chemistry, Multidisciplinary
Xiuyan Dong, Xiaoyu Zhang, Yuyan Li, Dingqi Xiong, Pengkun Fu, Mohd Afzal, Abdullah Alarifi, Hiroshi Sakiyama
Summary: Two new cobalt(II) MOFs with different structures were synthesized, demonstrating the influence of auxiliary linkers on the resulting networks. The magnetic properties of the compounds were also investigated in detail.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Sylvain Sudan, Ru-Jin Li, Suzanne M. Jansze, Andre Platzek, Robin Rudolf, Guido H. Clever, Farzaneh Fadaei-Tirani, Rosario Scopelliti, Kay Severin
Summary: The design of structurally defined heteroleptic coordination cages is challenging and only a few examples are known. In this study, a novel hexanuclear Pd cage containing two types of dipyridyl ligands was identified using a selection approach. The structure of the cage was elucidated by single-crystal X-ray diffraction, revealing an unprecedented trigonal-antiprismatic cage structure.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)