Organotellurium cations for activation of E-H bonds in boranes, silanes and phosphines.
Provider: Grantová agentura ČR
Programme: Standardní projekty
Implementation period: 01.01.22 - 31.12.24
Workplace:
Fakulta chemicko-technologická - Katedra obecné a anorganické chemie
Investigator: Dostál LiborTeam member: Erben Milan | Hejda Martin
Description:
The aim of the project is to develop a reasonable strategy for the synthesis of organotellurium(II) and organotellurium(IV) cations stabilized by N-coordinating ligands with various number of nitrogen donors. Weakly coordinating counter-anions will be utilized to minimize their contacts with the tellurium center, thereby enhancing its Lewis acidity. Isolated cations will be examined in an activation of E-H bonds in various silanes, boranes and phosphines (E = Si, B, P), while decisive factors of both cations and substrates used on this reactivity will be followed and described. Particular emphasis will be given to reactions accompanied by a new E-E bond formation or to those where the E radical fragment is transferred to another substrate. All compounds and potential reaction mechanisms will be investigated by NMR, UV-vis, IR and Raman spectroscopy and X-ray diffraction analysis etc. Theoretical studies focusing active cations as well as reaction mechanisms will also constitute an important part of the project.
The aim of the project is to develop a reasonable strategy for the synthesis of organotellurium(II) and organotellurium(IV) cations stabilized by N-coordinating ligands with various number of nitrogen donors. Weakly coordinating counter-anions will be utilized to minimize their contacts with the tellurium center, thereby enhancing its Lewis acidity. Isolated cations will be examined in an activation of E-H bonds in various silanes, boranes and phosphines (E = Si, B, P), while decisive factors of both cations and substrates used on this reactivity will be followed and described. Particular emphasis will be given to reactions accompanied by a new E-E bond formation or to those where the E radical fragment is transferred to another substrate. All compounds and potential reaction mechanisms will be investigated by NMR, UV-vis, IR and Raman spectroscopy and X-ray diffraction analysis etc. Theoretical studies focusing active cations as well as reaction mechanisms will also constitute an important part of the project.
