Cationic complexes of titanium(III); phosphine substitution reactions

Abstract

[Traduit par la revue]

Coordination polymer networks with s-block metal ions

“…This has been shown in the zig-zag-arranged structures of the solidstate structures of CpM-compounds for the heavier alkali metal ions [41,42]. Substituted phenyl rings with small and noncoordinating side-groups maintain such a chain-structure in the solid state ( Fig.…”

Cationic Titanocene(III) Complexes for Catalysis in Single‐Electron Steps

“…Stephan et al. have shown that from CH 3 CN solutions of Zn‐reduced [Cp 2 TiCl 2 ] (Zn‐Cp 2 TiCl 2 hereafter), [Cp 2 Ti(NCCH 3 ) 2 ] + salts can be crystallized 6. To examine the identity and properties of the Ti III complex in CH 3 CN, the generation of Ti III from [Cp 2 TiCl 2 ] by Zn metal in CH 3 CN was compared to its generation under identical conditions in THF (Figure 1) by using in situ IR spectroscopy and cyclic voltammetry (CV).…”

Heterodinuclear titanium/zinc catalysis: synthesis, characterization and activity for CO2/epoxide copolymerization and cyclic ester polymerization

“…Amine deprotonation occurs adjacent to Ti rather than Zn, which is perhaps surprising as it contrasts with reported examples of titanium zincate complexes, where it is the zinc centre which bears a formal anionic charge. 96,97,[100][101][102][103][104] It seems plausible that the amine ligand may donate electron density to the Ti centre and acidify the NH group so that it can be deprotonated by Et assigned to 2 and Et 2 Zn, accompanied by the formation of a new set of product resonances along with ethane (0.81 ppm). A distinctive sharp 1 H NMR spectrum was obtained ( Fig.…”