A tripodal ligand constructed solely from mesoionic carbene donors is reported. The donor strength of this ligand is lower than most imidazol-2-ylidene-based tris(carbene)borate ligands, as measured by IR spectroscopy of {NiNO}(10) and {Mn(CO)3}(+) derivatives. The attenuated donor strength is proposed to be due to the collective electron-withdrawing effect of the ligand's aryl substituents.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1021/ic402311c | DOI Listing |
J Am Chem Soc
January 2025
Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697, United States.
The development of molecular species with switchable magnetic properties has been a long-standing challenge in chemistry. One approach involves binding an analyte, such as protons, to a compound to trigger a change in magnetism. Transition metal complexes have been targeted for this type of magnetic modulation because they can undergo changes in their spin states.
View Article and Find Full Text PDFInorg Chem
January 2025
Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, China.
The protonolysis and redox reactivity of a Ce(IV) carbonate complex supported by the Kläui tripodal ligand [(η-CH)Co{P(O)(OEt)}] (L) have been studied. Whereas treatment of [Ce(L)(CO)] () with RCOH afforded [Ce(L)(RCO)] ( = Me (), Ph (), 2-NOCH ()), the reaction of with PhCHCOH resulted in formation of a mixture of Ce(IV) () and Ce(III) () carboxylate species. In benzene in the dark, was slowly converted into via Ce(IV)-O(carboxylate) homolysis.
View Article and Find Full Text PDFChem Asian J
December 2024
Tokyo College, U-Tokyo Institutes for Advanced Study (UTIAS), The University of Tokyo, Mitsui Link Lab Kashiwanoha 1, FS CREATION, 6-6-2 Kashiwanoha, Kashiwa-shi, Chiba, 277-0882, Japan.
The control of the sequential self-assembly processes of highly entangled (AgL) (n=2,4,6,8) and AgL coordination polyhedra using side-chain effects was studied via the introduction of linear or branched side chains into the tripodal ligands. In addition to changes in the intermediate polyhedral species affording the multi- pathway process, disruption of the kinetic control of the sequential self-assembly was observed, thus demonstrating the utility of steric control for the construction of 3D-entangled molecular materials on the 5 nm scale with high molecular complexity.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
The integration of spin crossover (SCO) magnetic switching and electric polarization properties can engender intriguing correlated magnetic and electric phenomena. However, achieving substantial SCO-induced polarization change through rational molecular design remains a formidable challenge. Herein, we present a polar Fe(II) compound that exhibits substantial polarization change in response to a thermally regulated low-spin ↔ high-spin transition.
View Article and Find Full Text PDFChemistry
January 2025
University of Missouri, Chemistry, 601 S. College Ave, 65211, Columbia, UNITED STATES OF AMERICA.
CO2-based hydroesterification is an attractive route to produce value added ester compounds, which could replace CO-based hydroesterification processes if sufficient catalytic technologies are developed. One path to CO2-based hydroesterification is through an organoformate intermediate, which is then used in olefin hydroesterification to generate the desirable esters. This route creates a net CO2-based hydroesterification process using tandem catalytic systems for CO2 hydrogenation to organoformate paired with formate-olefin hydroesterification.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!