A highly luminescent non-palindromic [(C^C^N)Pd] pincer complex forms upon reacting pyridine-substituted 2,2'-diiodo-biphenyl with [Pd(PPh3)4]. This case study establishes for the first time that the title compound is formed via a double oxidative addition - comproportionation sequence. DFT and TDDFT calculations complement mechanistic and photophysical characterizations.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1039/d0cc04065g | DOI Listing |
Dalton Trans
January 2025
Department of Chemistry, Universität Konstanz, 78464 Konstanz, Germany.
We present the synthesis, characterization, and photophysical properties of two pyrene-modified () pincer bismuth complexes, where the pyrenyl residues are either part of the cyclometalating pincer ligand (1) or bound as monodentate ligands to the Bi ion (2). Both complexes are dually emissive at 77 K. For complex 2, pyrenyl phosphorescence persists at r.
View Article and Find Full Text PDFChem Asian J
January 2025
Huazhong University of Science and Technology, School of Chemisry & Chemical Engineering, 1037 Luoyu Road, 430074, Wuhan, CHINA.
Using a direct knitting strategy, we successfully prepared a novel heterogeneous catalyst consisting of pyridine-bridged bis(imidazolium-2-ylidene) palladium complexes (CNC-Pd) embedded in a knitted network polymer. The resulting catalysts (HCP-CNC-Pd-d) exhibited high specific surface areas of 982 m2 g-1 with microporous and mesoporous structures. The large surface area enhances contact between the substrate and the catalytic center, while the strong chelation between CNC and the metal ion ensures the catalyst's durability.
View Article and Find Full Text PDFDalton Trans
January 2025
LCC-CNRS, Université de Toulouse, CNRS, UPS, 205 route de Narbonne, BP44099 F-31077 Toulouse cedex 4, France.
Functional pincer ligands that engage in metal-ligand cooperativity and/or are capable of redox non-innocence have found a great deal of success in catalysis. These two properties may be found in metal complexes of the 2,6-bis(pyrazol-3-yl)pyridine (bpp) ligands. With this goal in mind, we have attempted the coordination of 2,6-bis(5-trifluoromethylpyrazol-3-yl)pyridine (LCF3) and its Bu analogue 2,6-bis(5--butylpyrazol-3-yl)pyridine (LtBu) to Mo(0) by reactions with mixed phosphine/carbonyl complexes [Mo(CO)(MeCN)(PMePh)] 1-3 (1 ≤ ≤ 3).
View Article and Find Full Text PDFDalton Trans
January 2025
Division of Chemical and Biological Sciences, Ames National Laboratory, Ames, IA 50011, USA.
(PhPNP)Ru(H)(Cl)(CO) serves as a precatalyst to a variety of important catalytic transformations but most improvements have been restricted to the replacement of the CO ligand to the hydride or changing the Ph groups of the pincer for other aryl or alkyl groups. The ligand to the hydride is often another hydride and studies that utilize other ligands in catalysis are limited. In this work, we synthesized a series of [(PhPNP)Ru(H)(CO)(L)][BPh] complexes bearing isonitrile, PMe, or a N-heterocyclic ligand to the Ru-H.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
CNRS: Centre National de la Recherche Scientifique, Chemistry, FRANCE.
Compounds featuring bonds between mercury and transition metals are of interest for their intriguing/ambiguous bonding and scarcely explored reactivities. We report herein the synthesis and reactivities of the new compound [(POCOP)Ni]2Hg, [Ni2Hg], featuring a trinuclear Ni-Hg-Ni core (POCOP = κP,κC,κP´-2,6-(i-Pr2PO)2C6H3). [Ni2Hg] reacts with CO2 to give the carbonate-bridged complex [Ni2CO3].
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!