@article{ShainyanTolstikovaSchilde2012,
  author    = {Shainyan, Bagrat A. and Tolstikova, Ljudmila L. and Schilde, Uwe},
  title     = {Simple methods for the preparation of N-triflyl guanidines and the structure of compounds with the CF3SO2N=C-N fragment},
  series = {Journal of fluorine chemistry},
  volume    = {135},
  journal   = {Journal of fluorine chemistry},
  number    = {1},
  publisher = {Elsevier},
  address   = {Lausanne},
  issn      = {0022-1139},
  doi       = {10.1016/j.fluchem.2011.12.004},
  pages     = {261 -- 264},
  year      = {2012},
  abstract  = {Two novel and simple approaches to N-triflyl guanidines are elaborated. Owing to very strong conjugation the formally double C=N bond of TIN=C(NHR)(2) is longer than the formally single N-C bonds. Energetic effect of the triflylgroup on the conjugation in the N-C=N moiety is estimated to be >= 150 kcal/mol.},
  language  = {en}
}
@article{SchwarzeTraegerKellingetal.2013,
  author    = {Schwarze, Thomas and Traeger, Juliane and Kelling, Alexandra and Schilde, Uwe and Holdt, Hans-J{\"u}rgen},
  title     = {Macrocyclic dithiomaleonitriles for an efficient PdCl2 coordination},
  series = {Inorganica chimica acta : the international inorganic chemistry journal},
  volume    = {408},
  journal   = {Inorganica chimica acta : the international inorganic chemistry journal},
  number    = {2},
  publisher = {Elsevier},
  address   = {Lausanne},
  issn      = {0020-1693},
  doi       = {10.1016/j.ica.2013.08.020},
  pages     = {53 -- 58},
  year      = {2013},
  abstract  = {We have synthesized a set of new unsaturated macrocyclic dithioethers with an increasing number of flexible methylene units 1-7 (Scheme 2) to investigate the correlation between the ring size of these ligands, the chelation effect and the consequences for an efficient PdCl2 coordination. The dithioethers 1-7 and the complex [PdCl2(4)]center dot CHCl3 were characterized by X-ray diffraction analysis. The crystal structures of 1-7 show that 2-7 are better preorganized chelating ligands for an exocyclic PdCl2 coordination than 1. The chelation effect of 1-7, the orientation of the sulfur atoms and the S center dot center dot center dot S donor distances, are influenced by the flexibility of the methylene units. In this series the unsaturated macrocyclic ligands 5 and 6 are the best chelating ligands for an efficient PdCl2 coordination. Comparative solvent extraction experiments with mn-12S(2)O(2) (mn = maleonitrile) reveal that the low interface activity of the new ligands reduces the extraction rate. However, a comparison with open-chain dithiomaleonitriles shows the impact of the macrocyclic effect of 4 and 5 on the extraction yield.},
  language  = {en}
}