%0 Journal Article
%A Klauke, Karsten
%A Gruber, Irina
%A Knedel, Tim-Oliver
%A Schmolke, Laura
%A Barthel, Juri
%A Breitzke, Hergen
%A Buntkowsky, Gerd
%A Janiak, Christoph
%T Silver, Gold, Palladium, and Platinum N-heterocyclic Carbene Complexes Containing a Selenoether-Functionalized Imidazol-2-ylidene Moiety
%J Organometallics
%V 37
%N 3
%@ 1520-6041
%C Washington, DC
%I ACS Publ.
%M FZJ-2019-06109
%P 298 - 308
%D 2018
%X The selenoether-functionalized imidazolium salt N-[(phenylseleno)methylene)]-N′-methylimidazolium chloride (LH+Cl–) was transformed into the metal–carbene complexes [AgCl(L)], [AuCl(L)], [PdCl2(L)], and [PtCl2(L)] by the reaction with Ag2O and an additional transmetalation reaction of [AgCl(L)] with [(THT)AuCl], [(COD)PdCl2], and [(COD)PtCl2], respectively (THT = tetrahydrothiophene, COD = cyclooctadiene). The compound [AuI2Cl(L)] was prepared by oxidation of [AuCl(L)] with elemental iodine. The microwave-assisted decomposition of [PdCl2(L)] in the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIm]NTf2) or in propylene carbonate led to the formation of Pd17Se15 nanoparticles of 51 ± 17 or 26 ± 7 nm diameter, respectively. The decomposition of the platinum complex resulted in either small Pt clusters around 1 nm size from the ionic liquid suspension or Pt nanoparticles of 3 ± 1 nm diameter in propylene carbonate. High-resolution X-ray photoelectron spectroscopy (HR-XPS) and 13C cross-polarization magic-angle spinning (CP MAS) NMR indicated that the surface of Pt clusters and crystalline Pt nanoparticles is formed by an amorphous Pt(II)/Se shell and by carbene ligand residues.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000425193000006
%R 10.1021/acs.organomet.7b00678
%U https://juser.fz-juelich.de/record/867470