New Interventions by silicone grease in synthesis

Daniel Werner, Nazli E. Rad, Zhifang Guo, Glen B. Deacon, Peter C. Junk

Research output: Contribution to journalArticleResearchpeer-review


In redox-transmetallation protolysis (RTP) reactions in tetrahydrofuran (thf) between excess scandium or cerium metal, Hg(C6F5)2 and 3,5-dimethylpyrazole (Me2pzH) in silicone greased Schlenk flasks, formation of the 3,5-dimethyl-1-pyrazolyl(dimethyl)siloxide (Me2pzSiMe2O) ligand was observed. Thus the former reaction gave [Sc2(Me2pz)4(Me2pzSiMe2O)2] 1 in good yield, whilst the latter gave a mixture of [Ce4O(Me2pz)9(Me2pzSiMe2O)2] 2 a, [Ce4O(Me2pz)11] 2 b, both mixed oxidation state species, and the CeIV complex [Ce(Me2pz)4(Me2pzH)] 2 c.

Original languageEnglish
Article numbere202200222
Number of pages7
JournalZeitschrift fuer Anorganische und Allgemeine Chemie
Issue number23
Publication statusPublished - 13 Dec 2022


  • 3,5-dimethylpyrazole
  • Crystal structures
  • Redox transmetallation protolysis (RTP) reactions
  • Scandium and mixed oxidation and tetravalent Ce complexes
  • Silicone grease

Cite this