English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

A reaction sequence involving two hydrogen transfers and a C-C coupling on the beta-carbon of an isopropyl group leads to formation of a new dianionic tridentate ligand in the reaction of the ene diamide complex Cp*Hf(sigma-2, pi-iPr-DAB)Cl (1; Cp* = eta-5-C5Me5, iPr-DAB = 1,4-dilsopropyl-1,4-diaza-1,3-butadiene) with organic cyanides. The product Cp*Hf [iPrNCH=CHNC(Me)= CHC(tBu)=NH]Cl was structurally characterized (Pbca, a = 13.454 (1) angstrom, b = 11.470 (1) angstrom, c = 31.297 (2) angstrom, 100 K). The reaction sequence is probably initiated by the transfer of the iPr alpha-H atom to a coordinated cyanide. Such a hydrogen transfer was observed in the reaction of 1 with ketones, producing the ene imine alkoxide complexes Cp*Hf[iPrNCH=CHN=CMe2](OCHR2)Cl, which were identified by NMR spectroscopy.

Unexpected carbon-carbon coupling between organic cyanides and an isopropyl .beta.-carbon in a hafnium ene diamide complex