@article{KraemerLuffRadiusetal.2021,
  author    = {Kr{\"a}mer, Felix and Luff, Martin S. and Radius, Udo and Weigend, Florian and Breher, Frank},
  title     = {NON-Ligated N-Heterocyclic Tetrylenes},
  series = {European Journal of Inorganic Chemistry},
  volume    = {2021},
  journal   = {European Journal of Inorganic Chemistry},
  number    = {35},
  doi       = {10.1002/ejic.202100446},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-262586},
  pages     = {3591 -- 3600},
  year      = {2021},
  abstract  = {We report on the synthesis of N-heterocyclic tetrylenes ligated by the NON-donor framework 4,5-bis(2,6-diisopropylphenyl-amino)-2,7-di-tert-butyl-9,9-dimethylxanthene. The molecular structures of the germylene (3), stannylene (4) and plumbylene (5) where determined by X-ray diffraction studies. Furthermore, we present quantum chemical studies on the σ-donor and π-acceptor properties of 3-5. Additionally, we report on the reactivity of the tetrylenes towards the transition metal carbonyls [Rh(CO)\(_{2}\)Cl]\(_{2}\), [W(CO)\(_{6}\)] and [Ni(CO)\(_{4}\)]. The isolated complexes (6 and 7) show the differing reactivity of NHTs compared to NHCs. Instead of just forming the anticipated complex [(NON)Sn-Rh(CO)\(_{2}\)Cl], 4 inserts into the Rh-Cl bond to afford [(NON)Sn(Cl)Rh(CO)(C\(_{6}\)H\(_{6}\))] (6, additional CO/C6H6 exchange) and [(NON)Sn(Cl)Rh\(_{2}\)(CO)\(_{4}\)Cl] (7). By avoiding halogenated transition metal precursors in order to prevent insertion reactions, germylene 3 shows "classical" coordination chemistry towards {Ni(CO)3} forming the complex [(NON)Ge-Ni(CO)\(_{3}\)] (8).},
  language  = {en}
}