New Interventions by silicone grease in synthesis. Issue 23 (24th August 2022)

• Record Type: Journal Article
• Authors: Werner, Daniel; Rad, Nazli E.; Guo, Zhifang; Deacon, Glen B.; Junk, Peter C.
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 648:Issue 23(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-24
• Subjects: Redox transmetallation protolysis (RTP) reactions -- Silicone grease -- 3, 5-dimethylpyrazole -- Scandium and mixed oxidation and tetravalent Ce complexes -- Crystal structures; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.202200222
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract: In redox‐transmetallation protolysis (RTP) reactions in tetrahydrofuran (thf) between excess scandium or cerium metal, Hg(C6 F5 )2 and 3, 5‐dimethylpyrazole (Me2 pzH) in silicone greased Schlenk flasks, formation of the 3, 5‐dimethyl‐1‐pyrazolyl(dimethyl)siloxide (Me2 pzSiMe2 O) ligand was observed. Thus the former reaction gave [Sc2 (Me2 pz)4 (Me2 pzSiMe2 O)2 ] 1 in good yield, whilst the latter gave a mixture of [Ce4 O(Me2 pz)9 (Me2 pzSiMe2 O)2 ] 2 a, [Ce4 O(Me2 pz)11 ] 2 b, both mixed oxidation state species, and the Ce IV complex [Ce(Me2 pz)4 (Me2 pzH)] 2 c . Abstract :